Soil quality. Determination of total nitrogen. Modified Kjeldahl method.
土壤质量 总氮的测定 改良凯氏定氮法
2001-09-30
KS I ISO 11261(2018 Confirm)
토양의 질－총질소 함량 측정방법 (수정된 켈달법)
土壤质量总氮的测定改良凯氏定氮法
2008-11-10
KS I ISO 11261(2021 Confirm)
토양의 질－총질소 함량 측정방법 (수정된 켈달법)
土壤质量总氮的测定改良凯氏定氮法
2008-11-10
ISO 11261-1995
Soil quality — Determination of total nitrogen — Modified Kjeldahl method
土壤质量——总氮&mdash的测定；改良凯氏定氮法
1995-03-09
BS 7755-3.7-1995
Soil quality. Chemical methods-Determination of total nitrogen. Modified Kjeldahl method
土壤质量 化学方法 总氮的测定 改良凯氏定氮法
1995-10-15
DIN ISO 11261
Soil quality - Determination of total nitrogen - Modified Kjeldahl method (ISO 11261:1995)
土壤质量总氮的测定改良凯氏定氮法
1997-05-01
NY/T 53-1987
土壤全氮测定法(半微量开氏法)
Method for the determination of soil total nitrogen(Semi-micro Kjeldahl method)
1987-01-03
GB/T 9170-1988
润滑油及燃料油中总氮含量测定法（改进的克氏法）
Lubricating oils and fueloils--Determination of total nitrogen--Modified Kjeldahl method
1988-04-29
NY/T 1121.24-2012
土壤检测 第24部分:土壤全氮的测定 自动定氮仪法
Soil testing--Part 24:Determination of total nitrogen in soil--Automatic kjeldahl apparatus method
2012-06-06
DIN EN 13654-1
Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method; English version of DIN EN 13654-1
土壤改良剂和培养基.氮的测定.第1部分:改良凯氏法；德文版EN 13654-1:2001