German standard methods for the examination of water, waste water and sludge; individual constituents (group P); determination of ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA) by polarography (P 5)
德国水、废水和污泥检验标准方法;单个成分(P组);极谱法测定乙二胺四乙酸(EDTA)和硝基三乙酸(NTA)(P5)