硝酸对水质中重金属含量测定的影响研究

Study on the Effect of Nitric Acid for Heavy Metal Content Determination

采用火焰原子吸收分光光度法对加硝酸和不加硝酸的浑浊和澄清水质样品中镍、锰、铜、锌、铅的浓度变化进行测定研究和对比,结果表明硝酸加入样品中能起到固定剂的作用,加入硝酸对于铜元素的浓度影响很小,对澄清水中的锰元素和铅元素影响也很小,但是加入硝酸对镍和锌元素有较大影响。

The concentration changes of nickel, manganese, copper, zinc, lead in turbid and clear water samples with and without nitric acid were researched and contrasted using flame atomic absorption spectrophotometry. The results showed that nitric acid to join samples can have the effect of fixing agent; the effect for the concentration of copper to join nitric acid was very small, the effect for the concentrations of manganese element and lead element to join nitric acid in clear water was very small, but it had a large influence on nickel and zinc.