DIN EN 13368-2:2012 肥料.用色谱法测定肥料的螯合剂.第2部分:用离子偶色谱法测定o,o-EDDHA;o,o-EDDHMA和HBED螯合的铁.德文版本EN 13368-2-2012
Fertilizers - Determination of chelating agents in fertilizers by chromatography - Part 2: Determination of Fe chelated by o,o-EDDHA, o,o-EDDHMA and HBED by ion pair chromatography; German version EN 13368-2:2012