China National Standards

China nitrogen GB Standards List


  •  China "nitrogen" GB Standards List:
  • Standard  Code Standard Title Standard Class Order
    GB 4234.9-2023 Surgical implants Metallic materials Part 9: Forged high nitrogen stainless steel {译}
    外科植入物 金属材料 第9部分:锻造高氮不锈钢
    China National Standards
    nitrogen

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    GB/T 43378-2023 nitrogen for aircraft {译}
    飞机用氮气
    China National Standards
    nitrogen

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    GB/T 43304-2023 nitrogen oxide blue-green powder for white light LED {译}
    白光LED用氮氧化物蓝绿粉
    China National Standards
    nitrogen

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    GB/T 20914.5-2023 Dies nitrogen gas springs Part 5: Safety regulations for nitrogen springs {译}
    冲模 氮气弹簧 第5部分:氮气弹簧安全规范
    China National Standards
    nitrogen

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    GB/T 6609.35-2023 Methods for chemical analysis and determination of physical properties of alumina Part 35: Determination of specific surface area nitrogen adsorption method {译}
    氧化铝化学分析方法和物理性能测定方法 第35部分:比表面积的测定 氮吸附法
    China National Standards
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    GB/T 42668-2023 Samarium iron nitrogen bonded permanent magnet powder {译}
    钐铁氮粘结永磁粉
    China National Standards
    nitrogen

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    GB/T 42955-2023 Determination of total nitrogen content in fertilizers Dumas combustion method {译}
    肥料中总氮含量的测定 杜马斯燃烧法
    China National Standards
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    GB/T 42490-2023 Soil quality Determination of organic carbon content and carbon isotope ratio, total nitrogen content and nitrogen isotope ratio in soil and biological samples Stable isotope ratio mass spectrometry {译}
    土壤质量 土壤与生物样品中有机碳含量与碳同位素比值、全氮含量与氮同位素比值的测定 稳定同位素比值质谱法
    China National Standards
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    GB/T 42488-2023 Soil quality - Determination of 15N abundance of inorganic nitrogen in soil - Stable isotope ratio mass spectrometry {译}
    土壤质量 土壤中无机态氮15N丰度的测定 稳定同位素比值质谱法
    China National Standards
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    GB/T 42485-2023 Soil quality Determination of soil nitrate nitrogen, nitrite nitrogen and ammonium nitrogen KCl solution leaching manual analysis method {译}
    土壤质量 土壤硝态氮、亚硝态氮和铵态氮的测定 氯化钾溶液浸提手工分析法
    China National Standards
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    GB/T 42487-2023 Soil quality - Determination of soil nitrate nitrogen, nitrite nitrogen and ammonium nitrogen - potassium chloride solution leaching flow analysis method {译}
    土壤质量 土壤硝态氮、亚硝态氮和铵态氮的测定 氯化钾溶液浸提流动分析法
    China National Standards
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    GB/T 41964-2022 Photography Washing Waste Liquid Determination of Ammonia nitrogen Content (Micro-diffusion Method) {译}
    摄影 冲洗废液 氨态氮含量的测定 (微扩散法)
    China National Standards
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    GB/T 41965-2022 Photography Flushing Waste Liquid Determination of Total Content of Ammonia nitrogen (Micro-diffusion Kjeldahl Nitrogen Method) {译}
    摄影 冲洗废液 氨态氮总含量的测定 (微扩散凯氏氮法)
    China National Standards
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    GB/T 42263-2022 Determination of nitrogen content in silicon single crystals - Secondary ion mass spectrometry {译}
    硅单晶中氮含量的测定 二次离子质谱法
    China National Standards
    nitrogen

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    GB/T 41942-2022 Natural raw rubber and natural rubber latex - Determination of nitrogen content - Micro Dumas combustion method {译}
    天然生胶和天然胶乳 氮含量的测定 微杜马斯燃烧法
    China National Standards
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    GB/T 41733-2022 Determination of carbon residue in organic heat carrier nitrogen filling method {译}
    有机热载体残炭测定法 充氮法
    China National Standards
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    GB/T 40535.1-2021 Test methods of continuous nitride ceramic fibers—Part 1:nitrogen content
    连续氮化物陶瓷纤维测试方法 第1部分:氮含量
    China National Standards
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    GB/T 40166-2021 Paper and board—Accelerated ageing(exposure to nitrogen dioxide)
    纸和纸板 加速老化(二氧化氮条件下)
    China National Standards
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    GB/T 17674-2021 Determination of nitrogen in crude oil -- Boat-inlet chemiluminescence
    原油中氮含量的测定 舟进样化学发光法
    China National Standards
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    GB/T 41153-2021 Determination of boron, aluminum and nitrogen impurity content in silicon carbide single crystal -- Secondary ion mass spectrometry
    碳化硅单晶中硼、铝、氮杂质含量的测定? 二次离子质谱法
    China National Standards
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    GB/T 40723-2021 Rubber—Determination the contents of total sulfur and total nitrogen — Automatic analyser method
    橡胶 总硫、总氮含量的测定 自动分析仪法
    China National Standards
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    GB/T 21287-2021 Electronic specialty gas—nitrogen trifluoride
    电子特气 三氟化氮
    China National Standards
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    GB/T 12690.4-2021 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 4: Determination of oxygen and nitrogen contents—Impulse-infrared absorption and impulse-thermal conductivity method
    稀土金属及其氧化物中非稀土杂质化学分析方法 第4部分:氧、氮量的测定 脉冲-红外吸收法和脉冲-热导法
    China National Standards
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    GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation
    钢铁及合金 氮含量的测定 蒸馏分离靛酚蓝分光光度法
    China National Standards
    nitrogen

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    GB 7300.601-2020 Feed additives-Part 6:Non-protein nitrogen-Urea
    饲料添加剂 第6部分:非蛋白氮 尿素
    China National Standards
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    GB/T 20567-2020 Vanadium-nitrogen
    钒氮合金
    China National Standards
    nitrogen

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    GB/T 38395-2019 Coal tar—Determination of sulfur and nitrogen content
    煤焦油 硫和氮含量的测定
    China National Standards
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    GB/T 24583.8-2019 Vanadium-nitrogen—Determination of silicon, manganese, phosphorus, aluminum content—Inductively coupled plasma atomic emission
    钒氮合金 硅、锰、磷、铝含量的测定 电感耦合等离子体原子发射光谱法
    China National Standards
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    GB/T 24583.7-2019 Vanadium-nitrogen—Determination of oxygen content—Infrared absorption method
    钒氮合金 氧含量的测定 红外线吸收法
    China National Standards
    nitrogen

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    GB/T 24583.5-2019 :Vanadium-nitrogen—Determination of phosphorus content—Bismuth molybdenum blue spectrophotometric method
    钒氮合金 磷含量的测定 铋磷钼蓝分光光度法
    China National Standards
    nitrogen

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    GB/T 24583.4-2019 Vanadium-nitrogen—Determination of carbon content—Infrared absorption method
    钒氮合金 碳含量的测定 红外线吸收法
    China National Standards
    nitrogen

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    GB/T 24583.3-2019 Vanadium-nitrogen—Determination of nitrogen content—Distillation-neutralization titration method
    钒氮合金 氮含量的测定 蒸馏-中和滴定法
    China National Standards
    nitrogen

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    GB/T 24583.2-2019 Vanadium-nitrogen—Determination of nitrogen content—Thermal conductimetric method after fusion in a current of inert gas
    钒氮合金 氮含量的测定 惰性气体熔融热导法
    China National Standards
    nitrogen

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    GB/T 24583.1-2019 Vanadium-nitrogen—Determination of vanadium content—Ammonium ferrous sulfate titration method
    钒氮合金 钒含量的测定 硫酸亚铁铵滴定法
    China National Standards
    nitrogen

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    GB/T 37588-2019 Carbon materials—Determination of nitrogen content—Dumas combustion method
    炭素材料 氮含量的测定 杜马斯燃烧法
    China National Standards
    nitrogen

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    GB/T 37528-2019 General technical specification for biological filter for nitrogen removal
    脱氮生物滤池通用技术规范
    China National Standards
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    GB/T 36895-2018 Water saving enterprises—nitrogenous fertilizer industry
    节水型企业-氮肥行业
    China National Standards
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    GB/T 37186-2018 Gas analysis—Determination of sulfur dioxide and nitrogen oxides—Ultraviolet differential optical absorption spectroscopy
    气体分析-二氧化硫和氮氧化物的测定-紫外差分吸收光谱分析法
    China National Standards
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    GB/T 609-2018 Chemical reagent—General method for the determination of total nitrogen
    化学试剂 总氮量测定通用方法
    China National Standards
    nitrogen

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    GB/T 15076.13-2017 Methods for chemical analysis of tantalum and niobium—Part 13: Determination of nitrogen content—Inert gas fusion thermal conductivity method
    钽铌化学分析方法 第13部分:氮量的测定 惰气熔融热导法
    China National Standards
    nitrogen

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    GB/T 34532-2017 Coking wastewater—Determination of ammonia nitrogen content—Formaldehyde method
    焦化废水 氨氮含量的测定 甲醛法
    China National Standards
    nitrogen

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    GB/T 14265-2017 General rule of chemical analysis for hydrogen,oxygen,nitrogen,carbon and sulfur in metallic materials
    金属材料中氢、氧、氮、碳和硫分析方法通则
    China National Standards
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    GB/T 13747.22-2017 Methods for chemical analysis of zirconium and zirconium alloys—Part 22:Determination of oxygen and nitrogen contents—Inert gas fusion-infrared absorption and thermal conductivity method
    锆及锆合金化学分析方法 第22部分:氧量和氮量的测定 惰气熔融红外吸收法/热导法
    China National Standards
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    GB/T 19143-2017 Analytical method of element for carbon,hydrogen ,oxygen and nitrogen in rock organics
    岩石有机质中碳、氢、氧、氮元素分析方法
    China National Standards
    nitrogen

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    GB/T 5687.4-2016 nitrogen-bearing ferrochromium and nitride ferrochrome with high nitrogen content—Determination of nitrogen content—The distillation-neutralization titration method
    氮化铬铁和高氮铬铁 氮含量的测定 蒸馏-中和滴定法
    China National Standards
    nitrogen

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    GB/T 35109-2017 Static test method of nitrogen and oxygen separation for molecular sieves
    分子筛氮氧分离静态测定方法
    China National Standards
    nitrogen

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    GB/T 34500.5-2017 Chemical analysis methods for rare earth residue and waste water—Part 5:Determination of ammonia nitrogen content
    稀土废渣、废水化学分析方法 第5部分:氨氮量的测定
    China National Standards
    nitrogen

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    GB/T 35582-2017 Sulfur and nitrogen elemental analyzers
    硫氮元素测定仪
    China National Standards
    nitrogen

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    GB/T 4702.17-2016 Chromium metal─Determination of oxygen, nitrogen and hydrogen content─Inert gas fusion thermal infrared detection method and conductivity method
    金属铬 氧、氮、氢含量的测定 惰性气体熔融红外吸收法和热导法
    China National Standards
    nitrogen

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    GB 5009.228-2016 National Food Safety Standard-Determination of volatile basic nitrogen in foods
    食品安全国家标准 食品中挥发性盐基氮的测定
    China National Standards
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    GB 5009.235-2016 National Food Safety Standard - Determination of amino acid nitrogen in food
    食品安全国家标准 食品中氨基酸态氮的测定
    China National Standards
    nitrogen

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    GB/T 4702.7-2016 Chromium metal─Determination of nitrogen content─Distillation-nessler reagent spectrophotometric method
    金属铬 氮含量的测定 蒸馏分离-奈斯勒试剂分光光度法
    China National Standards
    nitrogen

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    GB/T 32737-2016 Determination of nitrate nitrogen in soil—Ultraviolet spectrophotometry method
    土壤硝态氮的测定 紫外分光光度法
    China National Standards
    nitrogen

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    GB/T 32141-2015 Determination of the total volatile basic nitrogen in feed
    饲料中挥发性盐基氮的测定
    China National Standards
    nitrogen

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    GB/T 10722-2014 Carbon black—Determination of total and external surface area―nitrogen adsorption test method
    炭黑 总表面积和外表面积的测定 氮吸附法
    China National Standards
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    GB/T 11039.4-2014 Textiles―Tests for colour fastness―Colour fastness to contaminants―Part 4: Oxides of nitrogen in the atmosphere at high humidities
    纺织品 色牢度试验 耐大气污染物色牢度 第4部分:高湿氧化氮
    China National Standards
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    GB/T 2085.4-2014 Aluminum powder―Part 4: nitrogen atomized aluminum powder
    铝粉 第4部分:氮气雾化铝粉
    China National Standards
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    GB/T 30733-2014 Determination of total carbon, hydrogen and nitrogen content in coal―Instrumental method
    煤中碳氢氮的测定 仪器法
    China National Standards
    nitrogen

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    GB/T 30728-2014 Determination of nitrogen in solid biofuels
    固体生物质燃料中氮的测定方法
    China National Standards
    nitrogen

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    GB/T 30503-2014 General specification for marine nitrogen gas generator
    船用制氮装置通用技术条件
    China National Standards
    nitrogen

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    GB/T 4325.23-2013 Methods for chemical analysis of molybdenum - Part 23: Determination of oxygen and nitrogen contents - Inert gas fusion-infrared absorption and thermal conductivity method
    钼化学分析方法 第23部分:氧量和氮量的测定 惰气熔融红外吸收法-热导法
    China National Standards
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    GB/T 4324.26-2012 Methods for chemical analysis of tungsten - Part 26: Determination of nitrogen content - Pulse heating inert gas fusion-thermal conductive method and the Nessler reagent spectrophotometry
    钨化学分析方法 第26部分:氮量的测定 脉冲加热惰气熔融-热导法和奈氏试剂分光光度法
    China National Standards
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    GB/T 5458-2012 Liquid nitrogen biological container
    液氮生物容器
    China National Standards
    nitrogen

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    GB/T 27894.6-2012 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6: Determination of hydrogen helium oxygen nitrogen carbon dioxide and C1 to C8 hydrocarbons using three capillary columns
    天然气 在一定不确定度下用气相色谱法测定组成 第6部分:用三根毛细管色谱柱测定氢、氦、氧、氮、二氧化碳和C1至C8的烃类
    China National Standards
    nitrogen

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    GB/T 17674-2012 Determination of nitrogen in crude oil by boat-inlet chemiluminescence
    原油中氮含量的测定 舟进样化学发光法
    China National Standards
    nitrogen

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    GB/T 16774-2012 Autoboosting caliber liquid nitrogen container
    自增压式液氮容器
    China National Standards
    nitrogen

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    GB/T 14174-2012 Large caliber liquid nitrogen container
    大口径液氮容器
    China National Standards
    nitrogen

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    GB 29202-2012 National Food Safety Standard - Food Additive - nitrogen
    食品安全国家标准 食品添加剂 氮气
    China National Standards
    nitrogen

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    GB 11666.1-2012 Health protection zone for fertilizer industry - Part 1:nitrogen fertilizer industry
    肥料制造业卫生防护距离 第1部分:氮肥制造业
    China National Standards
    nitrogen

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    GB/T 27894.5-2012 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 5: Determination of nitrogen,carbon dioxideand C1 to C5 and C6+ hydrocarbons for a laboratory and on-line process application using three columns
    天然气 在一定不确定度下用气相色谱法测定组成 第5部分:实验室和在线工艺系统中用三根色谱柱测定氮、二氧化碳和C1至C5及C6+的烃类
    China National Standards
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    GB/T 27894.4-2012 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen,carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns
    天然气 在一定不确定度下用气相色谱法测定组成 第4部分:实验室和在线测量系统中用两根色谱柱测定氮、二氧化碳和C1至C5及C6+的烃类
    China National Standards
    nitrogen

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    GB/T 27885-2011 Determination of hydrogen、nitrogen、carbon monoxide carbon dioxide and C1~C8 hydrocarbons in the coal-based F-T synthetic tail gas - Gas chromatographic method
    煤基费托合成尾气中 H2、N2、CO2和C1~C8烃的测定 气相色谱法
    China National Standards
    nitrogen

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    GB/T 27884-2011 Determination of hydrogen、nitrogen、carbon monoxide carbon dioxide and methane in the coal-based F-T synthesis feed gas - Gas chromatographic method
    煤基费托合成原料气中H2、N2、CO、CO2和CH4的测定 气相色谱法
    China National Standards
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    GB/T 27854-2011 Chemicals - Soil microorganisms - nitrogen transformation test
    化学品 土壤微生物 氮转化试验
    China National Standards
    nitrogen

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    GB/T 27894.3-2011 Natrual gas - Determination of composition with defined uncertainty by gas chromatography - Part 3: Determination of hydrogen,helium,oxyen,nitrogen,carbon dioxide and hydrocarbons up to C8 using two packed columns
    天然气 在一定不确定度下用气相色谱法测定组成 第3部分:用两根填充柱测定氢、氦、氧、氮、二氧化碳和直至C8的烃类
    China National Standards
    nitrogen

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    GB/T 4698.7-2011 Methods for chemical analysis of titanium sponge,titanium and titanium alloys - Determination of oxygen and nitrogen content
    海绵钛、钛及钛合金化学分析方法 氧量、氮量的测定
    China National Standards
    nitrogen

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    GB/T 26251-2010 Fluorine and mixed gases of fluorine-nitrogen
    氟及氟氮混合气
    China National Standards
    nitrogen

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    GB/T 8572-2010 Determination of total nitrogen content for compound fertilizers titrimetric method after distillation
    复混肥料中总氮含量的测定 蒸馏后滴定法
    China National Standards
    nitrogen

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    GB/T 24583.8-2009 Vanadium-nitrogen alloy - Determination of silicon, manganese, phosphorus, aluminum content - Inductively inductively coupled plasma atomic emission spectrometric method
    钒氮合金 硅、锰、磷、铝含量的测定 电感耦合等离子体原子发射光谱法
    China National Standards
    nitrogen

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    GB/T 24583.7-2009 Vanadium-nitrogen alloy - Determination of oxygen content - The infrared absorption method
    钒氮合金 氧含量的测定 红外线吸收法
    China National Standards
    nitrogen

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    GB/T 24583.6-2009 Vanadium-nitrogen alloy - Determination of sulfur content - The infrared absorption method
    钒氮合金 硫含量的测定 红外线吸收法
    China National Standards
    nitrogen

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    GB/T 24583.5-2009 Vanadium-nitrogen alloy - Determination of phosphorus content - The bismuth molybdenum blue spectrophotometry method
    钒氮合金 磷含量的测定 铋磷钼蓝分光光度法
    China National Standards
    nitrogen

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    GB/T 24583.4-2009 Vanadium-nitrogen alloy - Determination carbon of content - The infrared absorption method
    钒氮合金 碳含量的测定 红外线吸收法
    China National Standards
    nitrogen

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    GB/T 24583.3-2009 Vanadium-nitrogen alloy - Determination of nitrogen content - The distillation-neutralization titration method
    钒氮合金 氮含量的测定 蒸馏-中和滴定法
    China National Standards
    nitrogen

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    GB/T 24583.2-2009 Vanadium-nitrogen alloy - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas
    钒氮合金 氮含量的测定 惰性气体熔融热导法
    China National Standards
    nitrogen

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    GB/T 24583.1-2009 Vanadium-nitrogen alloy - Determination of vanadium content - The ammonium ferrous sulfate titration method
    钒氮合金 钒含量的测定 硫酸亚铁铵滴定法
    China National Standards
    nitrogen

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    GB/T 10322.8-2009 Iron ores - Single-point determination of specific surface area - nitrogen adsorption method
    铁矿石 比表面积的单点测定 氮吸附法
    China National Standards
    nitrogen

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    GB/T 24318-2009 Determination of total nitrogen content in animal feeding stuffs by combustion according to the dumas principle and calculation of the crude protein content
    杜马斯燃烧法测定饲料原料中总氮含量及粗蛋白质的计算
    China National Standards
    nitrogen

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    GB/T 2910.15-2009 Textiles - Quantitative chemical analysis - Part 15: Mixtures of jute and certain animal fibres (method by determining nitrogen content)
    纺织品 定量化学分析 第15部分:黄麻与某些动物纤维的混合物(含氮量法)
    China National Standards
    nitrogen

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    GB/T 23952-2009 Inorganic chemicals for industrial use - General method for the determination of total nitrogen content - Distillation-acid-base titrations method
    无机化工产品中总氮含量测定的通用方法 蒸馏-酸碱滴定法
    China National Standards
    nitrogen

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    GB/T 23835.12-2009 Lithium perchlorate anhydrous - Part 12: Determination of total nitrogen content
    无水高氯酸锂 第12部分:总氮含量测定
    China National Standards
    nitrogen

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    GB/T 23772-2009 Inorganic chemicals for industrial use - General method for the determination of total nitrogen content - Nessler’s reagent colorimetric method
    无机化工产品中总氮含量测定的通用方法 蒸馏-纳氏试剂比色法
    China National Standards
    nitrogen

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    GB/T 6609.35-2009 Chemical analysis methods and determination of physical performance of alumina - Part 35: Determination of specific surface area by nitrogen adsorption
    氧化铝化学分析方法和物理性能测定方法 第35部分:比表面积的测定 氮吸附法
    China National Standards
    nitrogen

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    GB/T 22923-2008 Determination of nitrogen phosphorus potassium for fertilizers by auto analyzer
    肥料中氮、磷、钾的自动分析仪测定法
    China National Standards
    nitrogen

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    GB/T 18412.5-2008 Textiles - Determination of the residues of pesticides - Part 5: Organic nitrogen pesticides
    纺织品 农药残留量的测定 第5部分:有机氮农药
    China National Standards
    nitrogen

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    GB/T 9823-2008 Inspection of grain and oils - Determination of total nitrogen content
    粮油检验 植物油料饼粕总含氮量的测定
    China National Standards
    nitrogen

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    GB/T 22427.10-2008 Starches and derived products - Determination of nitrogen content
    淀粉及其衍生物氮含量测定
    China National Standards
    nitrogen

    English PDF
    GB/T 9695.11-2008 Meat and meat products - Determination of nitrogen content
    肉与肉制品 氮含量测定
    China National Standards
    nitrogen

    English PDF
    GB/T 5511-2008 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
    谷物和豆类 氮含量测定和粗蛋白质含量计算 凯氏法
    China National Standards
    nitrogen

    English PDF
    GB/T 19227-2008 Determination of nitrogen in coal
    煤中氮的测定方法
    China National Standards
    nitrogen

    English PDF
    GB/T 2441.1-2008 Determination of urea - Part 1:Total nitrogen content
    尿素的测定方法 第1部分:总氮含量
    China National Standards
    nitrogen

    English PDF
    GB/T 17767.1-2008 Determination of organic-inorganic compound fertilizers - Part 1: Total nitrogen content
    有机-无机复混肥料的测定方法 第1部分:总氮含量
    China National Standards
    nitrogen

    English PDF
    GB/T 10511-2008 Determination of total nitrogen content for nitrophosphate - Titrimetric method after distillation
    硝酸磷肥中总氮含量的测定 蒸馏后滴定法
    China National Standards
    nitrogen

    English PDF
    GB/T 10209.1-2008 Determination of monoammonium phosphate and diammonium phoshpate - Part 1: Total nitrogen content
    磷酸一铵、磷酸二铵的测定方法 第1部分:总氮含量
    China National Standards
    nitrogen

    English PDF
    GB/T 8979-2008 Pure nitrogen and high purity nitrogen and ultra pure nitrogen
    纯氮、高纯氮和超纯氮
    China National Standards
    nitrogen

    English PDF
    GB/T 8088-2008 Rubber,raw natural and rubber latex,natural - Determination of nitrogen content
    天然生胶和天然胶乳 氮含量的测定
    China National Standards
    nitrogen

    English PDF
    GB/T 3864-2008 Industrial nitrogen
    工业氮
    China National Standards
    nitrogen

    English PDF
    GB/T 5686.7-2008 Ferromanganese, ferromanganese-silicon,, nitrogen-bearing ferromanganese and manganese metal - Determination of sulfur content - Infrared absorption method and combustion-neutralization method
    锰铁、锰硅合金、氮化锰铁和金属锰 硫含量的测定 红外线吸收法和燃烧中和滴定法
    China National Standards
    nitrogen

    English PDF
    GB/T 5686.5-2008 Ferromanganese, ferromanganese-silicon , nitrogen-bearing ferromanganese and manganese metal - Determination of carbon content - The infrared absorption method ,the gasometric method ,the gravimetric and the coulometric method
    锰铁、锰硅合金、氮化锰铁和金属锰 碳含量的测定 红外线吸收法、气体容量法、重量法和库仑法
    China National Standards
    nitrogen

    English PDF
    GB/T 5686.2-2008 Ferromanganese,ferromanganese-silicon , nitrogen-bearing ferromanganese and manganese metal - Determination of silicon content - Molybdenum blue photometric method ,silicon potassium fluoride titrimetric method and perchloric acid dehydration gravimet
    锰铁、锰硅合金、氮化锰铁和金属锰 硅含量的测定 钼蓝光度法、氟硅酸钾滴定法和高氯酸重量法
    China National Standards
    nitrogen

    English PDF
    GB/T 5686.1-2008 Ferromanganese,ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal - Determination of manganese content - Potentiometric method and titrimetric mothod after ammonium nitrate & perchloric acid oxidation
    锰铁、锰硅合金、氮化锰铁和金属锰 锰含量的测定 电位滴定法、硝酸铵氧化滴定法及高氯酸氧化滴定法
    China National Standards
    nitrogen

    English PDF
    GB/T 21704-2008 Determination of non-protein-nitrogen content in milk and dairy products
    乳与乳制品中非蛋白氮含量的测定
    China National Standards
    nitrogen

    English PDF
    GB/T 13390-2008 Metallic powder-Determination of the specific surface area - Method of nitrogen adsorption
    金属粉末比表面积的测定 氮吸附法
    China National Standards
    nitrogen

    English PDF
    GB/T 21287-2007 Gases for electronic industry - nitrogen trifluoride
    电子工业用气体 三氟化氮
    China National Standards
    nitrogen

    English PDF
    GB/T 4699.3-2007 Ferrochromium, silicochromium and nitrogen-bearing ferrochromium -Determination of phosphorus content - Molybdobismuthylphosphoric blue spectrophotometric method and the molybdenum blue spectrophotometric method
    铬铁、硅铬合金和氮化铬铁 磷含量的测定 铋磷钼蓝分光光度法和钼蓝分光光度法
    China National Standards
    nitrogen

    English PDF
    GB/T 8654.1-2007 Manganese metal, ferromanganese - silicon, ferromanganese and nitrogen - bearing ferromanganese - Determination of iron content - The ortho - phenanthrdine spectrophotometric method and the titanium trichloride - potassium dichromate titrimetric method
    金属锰、锰硅合金、锰铁和氮化锰铁 铁含量的测定 邻二氮杂菲分光光度法和三氯化钛 - 重铬酸钾滴定法
    China National Standards
    nitrogen

    English PDF
    GB/T 5687.2-2007 Ferrochromium , silicochromium and nitrogen - bearing ferrochromium - Determination of silicon content - The perchloric acid dehydration gravimetric method
    铬铁、硅铬合金和氮化铬铁 硅含量的测定 高氯酸脱水重量法
    China National Standards
    nitrogen

    English PDF
    GB/T 20931.9-2007 Methods for chemical analysis of lithium - Determination of nitrogen content - Mercuric potassium iodide spectrophotometric method
    锂化学分析方法 氮量的测定 碘化汞钾分光光度法
    China National Standards
    nitrogen

    English PDF
    GB/T 609-2006 Chemical reagent - General method for the determination of total nitrogen
    化学试剂 总氮量测定通用方法
    China National Standards
    nitrogen

    English PDF
    GB/T 20567-2006 Vanadium-nitrogen
    钒氮合金
    China National Standards
    nitrogen

    English PDF
    GB/T 20124-2006 Steel and iron -- Determination of nitrogen content -- Thermal conductimetric method after fusion in a current of inert gas (Routine method)
    钢铁 氮含量的测定 惰性气体熔融热导法(常规方法)
    China National Standards
    nitrogen

    English PDF
    GB/T 11039.1-2005 Textiles-Tests for colour fastness-Colour fastness to Contaminants part1:nitrogen oxides
    纺织品 色牢度试验 耐大气污染物色牢度 第1部分:氧化氮
    China National Standards
    nitrogen

    English PDF
    GB/T 13595-2004 Tobacco and tobacco products--Determination of pyrethroids,organophosphorus and nitrogen-containing pesticides residues
    烟草及烟草制品 拟除虫菊酯杀虫剂、有机磷杀虫剂、含氮农药残留量的测定
    China National Standards
    nitrogen

    English PDF
    GB/T 12690.4-2003 Chemical analysis methods for non-rare earth impurities ofrare earth metals and their oxides--Determination of oxygen and nitrogen content--Impulse-infrared and impulse-thermal conductance absorption method
    稀土金属及其氧化物中非稀土杂质化学分析方法 氧、氮量的测定 脉冲-红外吸收法和脉冲-热导法
    China National Standards
    nitrogen

    English PDF
    GB/T 5009.179-2003 Determination of trimethylamine nitrogen in ham
    火腿中三甲胺氮的测定
    China National Standards
    nitrogen

    English PDF
    GB/T 3597-2002 Fertilizer--Determination of nitrate nitrogen content--Nitron gravimetric method
    肥料中硝态氮含量的测定 氮试剂重量法
    China National Standards
    nitrogen

    English PDF
    GB/T 3600-2000 Fertilizers--Determination of ammoniacal nitrogen content--Formaldehyde method
    肥料中氨态氮含量的测定 甲醛法
    China National Standards
    nitrogen

    English PDF
    GB/T 3595-2000 Fertilizers--Determination of ammoniacal nitrogen content--Titrimetric method after distillation
    肥料中氨态氮含量的测定 蒸馏后滴定法
    China National Standards
    nitrogen

    English PDF
    GB/T 17096-1997 Hygienic standard for nitrogen oxides in indoor air
    室内空气中氮氧化物卫生标准
    China National Standards
    nitrogen

    English PDF
    GB/T 16032-1995 Workplace air--Determination of nitrogen oxides--Naphthyl ethylenediamine dihydrochloride spectrophotometric method
    车间空气中氧化氮的盐酸萘乙二胺分光光度测定方法
    China National Standards
    nitrogen

    English PDF
    GB/T 15436-1995 Ambient air--Determination of nitrogen oxides--Saltzman method
    环境空气 氮氧化物的测定 Saltzman法
    China National Standards
    nitrogen

    English PDF
    GB/T 15435-1995 Ambient air--Determination of nitrogen dioxide--Saltzman method
    环境空气 二氧化氮的测定 Saltzman法
    China National Standards
    nitrogen

    English PDF
    GB/T 223.36-1994 Methods for chemical analysis of iron,steel and alloy--The neutral titration method for the determination of nitrogen content after distillation separation
    钢铁及合金化学分析方法 蒸馏分离-中和滴定法测定氮量
    China National Standards
    nitrogen

    English PDF
    GB/T 15076.13-1994 Methods for chemical analysis of tantalum and niob-ium--Determination of nitrogen content in tantalum
    钽铌化学分析方法 钽中氮量的测定
    China National Standards
    nitrogen

    English PDF
    GB/T 14265-1993 General rule of chemical analysis for hydrogen,oxygen,nitrogen,carbon and sulfur in metal’s materials
    金属材料中氢、氧、氮、碳和硫分析方法通则
    China National Standards
    nitrogen

    English PDF
    GB/T 13906-1992 Air quality--Determination of nitrogen oxides
    空气质量 氮氧化物的测定
    China National Standards
    nitrogen

    English PDF
    GB/T 13747.23-1992 Zirconium and zirconium alloys--Determination of nitrogen content--Distillation-Nessler reagent spectrophotometric method
    锆及锆合金化学分析方法 蒸馏分离-奈斯勒试剂分光光度法测定氮量
    China National Standards
    nitrogen

    English PDF
    GB/T 12372-1990 Standard method for examination of nitrogen dioxide in air of residential areas--Modified Saltzman method
    居住区大气中二氧化氮检验标准方法 改进的 Saltzman 法
    China National Standards
    nitrogen

    English PDF
    GB/T 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photo metric method
    水质 总氮的测定 碱性过硫酸钾消解紫外分光光度法
    China National Standards
    nitrogen

    English PDF
    GB/T 11891-1989 Water quality--Determination of Kjeldahl nitrogen
    水质 凯氏氮的测定
    China National Standards
    nitrogen

    English PDF
    GB/T 11843-1989 Uranium dioxide powder and pellets--Determination of nitrogen--Spectrophotometric method
    二氧化铀粉末和芯块中氮的测定 分光光度法
    China National Standards
    nitrogen

    English PDF
    GB/T 223.37-1989 Methods for chemical analysis of iron,steel and alloy--The indophenol blue photometric method for the determination of nitrogen content after distillation separation
    钢铁及合金化学分析方法 蒸馏分离-靛酚蓝光度法测定氮量
    China National Standards
    nitrogen

    English PDF
    GB/T 10267.5-1988 Method for analysis of calcium metal--The determination of nitrogen by distillation--Nessler reagent photometric method
    金属钙分析方法 蒸馏-奈斯勒试剂光度法测定氮
    China National Standards
    nitrogen

    English PDF
    GB/T 9170-1988 Lubricating oils and fueloils--Determination of total nitrogen--Modified Kjeldahl method
    润滑油及燃料油中总氮含量测定法(改进的克氏法)
    China National Standards
    nitrogen

    English PDF
    GB/T 8969-1988 Air quality--Determination of nitrogen oxides in ambient air--Griess-saltzman method
    空气质量 氮氧化物的测定 盐酸萘乙二胺比色法
    China National Standards
    nitrogen

    English PDF
    GB 7801-1987 Diagnostic criteria and principles of management of occupational acute nitrogen oxides
    职业性急性氮氧化物中毒诊断标准及处理原则
    China National Standards
    nitrogen

    English PDF
    GB/T 7493-1987 Water quality--Determination of nitrogen(nitrite)--Spectrophotometric method
    水质 亚硝酸盐氮的测定 分光光度法
    China National Standards
    nitrogen

    English PDF
    GB/T 5687.4-1985 Methods for chemical analysis of ferrochromium--The neutralization titration method for the determination of nitrogen content
    铬铁化学分析方法 中和滴定法测定氮量
    China National Standards
    nitrogen

    English PDF
    GB/T 4921-1985 Waste gasfrom manufacturing process--Determination of chemical oxygendemand and nitrogenoxide--Potassium dichromate oxidation and naphthylethylene diamine colorimetric method
    工业废气 耗氧值和氧化氮的测定 重铬酸钾氧化、萘乙二胺比色法
    China National Standards
    nitrogen

    English PDF

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