DIN 38409-26:1989 德國對水、廢水和污泥的標準檢驗法.參數特性效果和物質(H組).鉍-螯合物指數IBiK的測定(H26)
German standard methods for the examination of water, waste water and sludge; parameters characterizing effects and substances (group H); determination of the bismut-chelating index IBiK (H 26)