ZINC AND COPPER MEASUREMENT

One embodiment provides a method for measuring zinc and copper in an aqueous sample, the method comprising: reducing an aqueous sample containing an amount of zinc and an amount of copper with a reducing agent; buffering the reduced aqueous sample; chelating the amount of copper in the buffered aqueous sample with a copper (I) chelating agent; measuring the amount of copper in a copper chelated aqueous sample by measuring a first change in absorbance intensity of the aqueous sample; chelating the amount of zinc in the buffered aqueous sample with a zinc (II) chelating agent; and measuring the amount of zinc in the aqueous sample chelated with zinc by measuring a second change in absorbance intensity of the aqueous sample. Other aspects are described and claimed. 一个实施方案提供了一种用于测量含水样品中的锌和铜的方法，所述方法包括：利用还原剂来还原含有一定量的锌和一定量的铜的含水样品；缓冲经还原的含水样品；利用铜(I)螯合剂来螯合经缓冲的含水样品中的所述量的铜；通过测量经铜螯合的含水样品的吸光度强度的第一变化来测量所述含水样品中的铜的所述量；利用锌(II)螯合剂来螯合经缓冲的含水样品中的所述量的锌；以及通过测量经锌螯合的含水样品的吸光度强度的第二次变化来测量所述含水样品中的锌的所述量。描述并且要求保护了其他方面。