China nitrogen, GB Standards List

China "nitrogen," GB Standards List:

Standard Code	Standard Title	Standard Class	Order
GB/T 609-2018	Chemical reagents - General method for determination of total nitrogen {译} 化学试剂-总氮量测定通用方法	China National Standards nitrogen,	English PDF
GB/T 43845-2024	Weak static magnetic field imaging measurement method based on scanning nitrogen-vacancy probe {译} 基于扫描氮-空位探针的微弱静磁场成像测量方法	China National Standards nitrogen,	English PDF
GB/T 43905.2-2024	Laboratory methods for sampling fumes and gases for welding and related processes - Part 2: Determination of emission rates of carbon monoxide, carbon dioxide, nitric oxide and nitrogen dioxide during arc welding, cutting and gouging {译} 焊接及相关工艺中烟尘和气体取样的实验室方法-第2部分：电弧焊、切割及气刨中一氧化碳、二氧化碳、一氧化氮、二氧化氮排放速率的测定	China National Standards nitrogen,	English PDF
GB/T 5121.8-2024	Chemical analysis methods for copper and copper alloys - Part 8: Determination of oxygen, nitrogen and hydrogen content {译} 铜及铜合金化学分析方法-第8部分：氧、氮、氢含量的测定	China National Standards nitrogen,	English PDF
GB/T 43676-2024	General technical requirements for water-cooled premixed low-nitrogen burners {译} 水冷预混低氮燃烧器通用技术要求	China National Standards nitrogen,	English PDF
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,	English PDF
GB/T 43378-2023	nitrogen for aircraft {译} 飞机用氮气	China National Standards nitrogen,	English PDF
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,	English PDF
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,	English PDF
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 nitrogen,	English PDF
GB/T 42668-2023	Samarium iron nitrogen bonded permanent magnet powder {译} 钐铁氮粘结永磁粉	China National Standards nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
GB/T 21287-2021	Electronic specialty gas—nitrogen trifluoride 电子特气三氟化氮	China National Standards nitrogen,	English PDF
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 nitrogen,	English PDF
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,	English PDF
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 nitrogen,	English PDF
GB/T 20567-2020	Vanadium-nitrogen 钒氮合金	China National Standards nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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 nitrogen,	English PDF
GB/T 36895-2018	Water saving enterprises—Nitrogenous fertilizer industry 节水型企业-氮肥行业	China National Standards nitrogen,	English PDF
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 nitrogen,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
GB/T 35582-2017	Sulfur and nitrogen elemental analyzers 硫氮元素测定仪	China National Standards nitrogen,	English PDF
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,	English PDF
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 nitrogen,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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 nitrogen,	English PDF
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 nitrogen,	English PDF
GB/T 5458-2012	Liquid nitrogen biological container 液氮生物容器	China National Standards nitrogen,	English PDF
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,	English PDF
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,	English PDF
GB/T 16774-2012	Autoboosting caliber liquid nitrogen container 自增压式液氮容器	China National Standards nitrogen,	English PDF
GB/T 14174-2012	Large caliber liquid nitrogen container 大口径液氮容器	China National Standards nitrogen,	English PDF
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,	English PDF
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,	English PDF
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 nitrogen,	English PDF
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,	English PDF
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,	English PDF
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 nitrogen,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
GB/T 26251-2010	Fluorine and mixed gases of fluorine-nitrogen 氟及氟氮混合气	China National Standards nitrogen,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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,	English PDF
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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