氯代磺酚S光度法测定水中微量铜

Measuremt of the Microcopper in Water by Sulfochlorthenol S Luminosity

探讨了氯代磺酚S与Cu（Ⅱ）的显色反应条件，在pH5的HAC－NaAc缓冲介质中，Cu（Ⅱ）与试剂形成1:1的蓝色配合物，其最大吸收峰位于635nm处，摩尔吸光系数。为2．03×104，Cu（Ⅱ）的浓度在0～40μg／25mL范围内遵守比耳定律。用于水中微量铜的测定，结果满意。

Discussed in this essay is the Colour reaction condition of Siulfochlorothenol S and Cu(Ⅱ)In HAC-NaAC buffer medium of pH 5,(Ⅱ )and the reagent form a blue complex with a rate of 1: λmax=635nm,ε=2. 03×104,Cu density with the range of 0-40 μ g/25ml complies with Beer Law .This approach applies to the measurent of the micro-copper in water ,and the result is satisfactory .