DIN EN 16318:2016
肥料和石灰材料 通过光度法(方法 A)和离子色谱法与分光光度法检测(方法 B)测定铬(VI);德文版 EN 16318:2013+A1:2016
Fertilizers and liming materials - Determination of chromium(VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B); German version EN 16318:2013+A1:2016