HJ 717-2014
土壤质量 全氮的测定 凯氏法
Soil quality-Determination of total nitrogen-Modified Kjeldahl method
2014-11-27
UNE 77318-2001
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
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
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
DB64/T 1734-2020
土壤水解性氮的测定 凯氏定氮仪法
2020-05-18
KS I ISO 13878(2019 Confirm)
토양의 질－건식 연소에 의한 총 질소 함량의 측정 방법(원소 분석)
土壤质量干燃烧法测定全氮含量（“元素分析法”）
2009-12-18
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
GOST 32044.1-2012
Корма, комбикорма, комбикормовое сырье. Определение массовой доли азота и вычисление массовой доли сырого протеина. Часть 1. Метод Къельдаля
饲料 混合饲料和原料 测定氮的质量分数和粗蛋白质量分数的计算 凯氏定氮法
2012-12-03
T/LAIA 03-2024
土壤阳离子交换量的测定（EDTA-乙酸铵交换凯氏定氮法）
2024-03-12
UNE-EN 13654-1-2002
Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahi method.
土壤改良剂和培养基.氮的测定.第1部分:改良的凯氏法
2002-02-28
GB/T 42487-2023
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
Soil quality—Determination of nitrate, nitrite and ammonium in soils—Extraction with potassium chloride solution and determination using automated method with segmented flow analysis
2023-03-17
GB/T 42485-2023
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
Soil quality—Determination of nitrate, nitrite and ammonium in soils—Extraction with potassium chloride solution and determination with manual method
2023-03-17
DIN 19746
Soil quality - Determination of mineral nitrogen (nitrat and ammonium) in soil profiles (Nmin laboratory method)
土壤质量.土壤剖面中矿质氮（硝酸盐和铵）的测定（Nmin实验室法）
2005-06-01
GB/T 42490-2023
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
Soil quality—Determination of total content and isotope ratio of organic carbon and nitrogen of soil and biological samples—Stable isotope ratio mass spectrometry
2023-03-17
KS I ISO 23753-1(2016 Confirm)
토양의 질 - 토양 중 탈수소효소활성 측정방법 - 제1부 : Triphenyltetrazoliulm chloride(TTC)를 이용한 방법
土壤质量土壤脱氢酶活性的测定第1部分:氯化三苯基四氮唑（TTC）法
2006-10-27
KS I ISO 23753-1
토양의 질 — 토양 중 탈수소 효소 활성 측정 방법 — 제1부: Triphenyltetrazolium chloride(TTC)를 이용한 방법
土壤质量.土壤中脱氢酶活性的测定.第1部分:氯化三苯基四氮唑（TTC）法
2021-12-03
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
2002-01-01