Fertilizers. Chemical analysis. Determination of nitrogen-Method for determination of total nitrogen content (titrimetric method after distillation)
肥料 化学分析 氮的测定 总氮含量的测定方法（蒸馏后滴定法）

1986-07-31

Water quality — Determination of total nitrogen after UV digestion — Method using flow analysis (CFA and FIA) and spectrometric detection
水质与灰分；紫外线消解后总氮的测定——使用流动分析（CFA和FIA）和光谱检测的方法

2010-03-23