摘要
试验了浑浊水样六价铬测定中的预处理,结果表明:在水样中分别滴加氢氧化钠和硫酸锌溶液对排除浊度干扰,提高方法的检测限、准确度和重现性比采用滴加预先配制好的氢氧化锌共沉淀剂效果更好,尤其是对含微量六价铬且浊度较大的乳胶状水样的测定。
Based on the experiment of pre treatment in the process of detecting Cr6+ in turbid water samples ,it is shown that adding NaOH,ZnSO4 solution in water samples has better effects to exclude the interference of turbidity,Expand the value range of detect ion, accuracy .recurrence than adding Zn(OH)3 precipitant especially in the detection of mini-quantity Cr6+ in muddy water samples with higher turbidity.
出处
《福建环境》
1999年第2期34-35,共2页
Fujian Environment
