DIN EN ISO 21068-3-2008

含碳化硅原材料和耐火制品的化学分析 第3部分:氮、氧、金属和氧化物组分的测定

Chemical analysis of silicon-carbide-containing raw materials and refractory products - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents

适用范围：This part of ISO 21068 specifies methods for the determination of total nitrogen and nitrogen calculated assilicon nitride, total oxygen, and free metallic and oxidic components in silicon carbide raw ...

实施日期：2008-12-01

BS EN ISO 15351-2010

Stahl und Eisen. Bestimmung des Stickstoffgehaltes. Messung der W?rmeleitf?higkeit nach Aufschmelzen in str?mendem Inertgas (Routineverfahren) Steel and iron. Determination of nitrogen content. Thermal conductimetric method after fusion in a current of inert gas (Routine method) Aciers et fontes. Dosage de l'azote. Méthode par conductibilit thermique après fusion sous gaz inerte (Méthode pratique)

实施日期：2010-05-31

NF T51-702-1998

Plastics. Amine epoxide hardeners. Determination of primary, secondary and tertiary amine group nitrogen content.

EN 16168-2012

Sludge,treated biowaste and soil. Determination of total nitrogen using dry combustion method

实施日期：2012-08-01

ASTM D5291-2010

用仪器测定石油产品和润滑剂中碳、氢及氮的试验方法

Standard Test Methods for Instrumental Determination of Carbon,Hydrogen,and Nitrogen in Petroleum Products and Lubricants

适用范围：<p>This is the first ASTM standard covering the simultaneous determination of carbon, hydrogen, and nitrogen in petroleum products and lubricants.</p> <p>Carbon, hydrogen, and particularly nitrogen ana...

实施日期：2010-05-01

DIN ISO 11261-1997

土壤质量.总氮测定.修改后的Kjeldahl法

Soil quality - Determination of total nitrogen - Modified Kjeldahl method (ISO 11261:1995)

适用范围：Determination of total nitrogen (NH<(Index)4>-N, NO<(Index)2>-N, NO<(Index)3>-N and organic N). Nitrogen in N-N-linkage, NO-linkage and some heterocyclos will only be determined in parts.#,,#

DIN EN 15750-2010

Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods

实施日期：2010-02-01

EN ISO 5378-1994

Starches and Derived Products. Determination of Nitrogen Content by the Kjeldahl Method. Spectrophotometric Method (ISO 5378 :1978)

实施日期：1994-01-01

ISO 13878-1998

土壤质量--总氮含量的测定 干烧法(元素分析)

Soil quality. Determination of total nitrogen content by dry combustion (elemental analysis") first edition"

适用范围：This International Standard describes a method for the determination of the total nitrogen of soil after dry combustion. It is applicable to all types of soil. NOTE — The method was developed originall...

实施日期：1998-03-15

BS EN ISO 16634-1-2008

Lebensmittelerzeugnisse. Bestimmung des Gehaltes an Gesamtstickstoff mit dem Verbrennungsverfahren nach Dumas und Berechnung des Gehaltes an Rohprotein. ?lsaaten und Futtermittel Food products. Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content Part 1:Oilseeds and animal feeding stuffs (ISO 16634-1:2008) Produits alimentaires. Détermination de la teneur en azote total par combustion selon le principe Dumas et ca

实施日期：2008-11-30

EN ISO 6974-5-2001

Natural Gas. Determination of Composition with Defined Uncertainty by Gas Chromatography. Part 5:Determination of Nitrogen,Carbon Dioxide and C1 to C5 and C6+ Hydrocarbons for a Laboratory and On-Line Process Application Using Three Columns

实施日期：2001-08-01

NF V03-750-2014

Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method

BS EN 13716-2002

表面 活性剂 基本氮总量的测定 电势滴定法

Grenzflaechenaktive Stoffe. Bestimmung des Gehalts an Gesamt-Basen-Stickstoff. Potentiometrische Titration Surface Active Agents-Determination of Total Base Nitrogen-Potentiometric Titration Agents de ...

适用范围：Surfactants, Surface chemistry, Chemical analysis and testing, Determination of content, Nitrogen, Potentiometric methods

实施日期：2002-03-05

NY/T 297-1995

有机肥料全氮的测定

实施日期：1996-05-01

ISO 14255-1998

土壤质量--用氯化钙溶液做提取剂测定风干土壤中的硝酸盐氦,铵氮和总溶解氮

Soil quality. Determination of nitrate nitrogen,ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant first edition

适用范围：This International Standard describes a method for the determination of soluble nitrogen fractions (nitrate, nitrite, ammonium and organic nitrogen) in a 0,01 mol/l calcium chloride extract of soil sam...

实施日期：1998-05-01

EN ISO 11732-2005

Water quality. Determination of ammonium nitrogen. Method by flow analysis (CFA and FIA) and spectrometric detection ISO 11732:2005

实施日期：2005-02-01

NF V18-100-1-2005

Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1 : Kjeldahl method.

NF A06-559-2010

Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method).

YC/T 161-2002

烟草及烟草制品 总氮的测定连续流动法

Tobacco and tobacco products-Determination of total nitrogen-Continuous flow mentod

适用范围：本标准规定了烟草中总氮的测定方法(不包括硝态氮)。 本标准适用于烟草和烟草制品。

发布日期：2002-09-12  实施日期：2002-12-01

SH/T 0413-1992(2005)

液体石蜡中微量碱性氮含量测定法

发布日期：1992-05-20  实施日期：1992-05-20