Fertilizers. Chemical analysis. Determination of nitrogen-Determination of ammoniacal nitrogen, titrimetric method after distillation
肥料 化学分析 氮的测定 蒸馏后滴定法测定氨氮
1982-07-30
GB/T 3595-2000
肥料中氨态氮含量的测定 蒸馏后滴定法
Fertilizers--Determination of ammoniacal nitrogen content--Titrimetric method after distillation
2000-07-31
GOST 29313-1992
Удобрения минеральные. Метод определения аммонийного азота (титриметрический) после отгонки
肥料 蒸馏后测定氨氮含量(滴定)的方法
ISO 5314-1981
Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
肥料和灰分;氨态氮含量的测定——蒸馏后滴定法