火焰原子吸收法测定废水中Hg(Ⅱ)、Ni(Ⅱ)和Cr(Ⅵ)

Determination of Hg(Ⅱ),Ni(Ⅱ)and Cr(Ⅵ)in the Wastewater by Flame Atomic Absorption Spectrometry

采用了壳聚糖装柱法对金属离子进行吸附,研究了壳聚糖对Hg(Ⅱ)、Ni(Ⅱ)、Cr(Ⅵ)离子的吸附以及吸附时间、pH值和流速等对壳聚糖吸附的影响。通过最佳条件实验,用火焰原子吸收法测得重金属的含量并应用于工业废水的测定。

To use the chitosan packing method for metal ions adsorption,study the chitosan adsorptive action for Hg （ Ⅱ ）. Ni（Ⅱ ） .Cr（Ⅵ ）and analyze the influence of the adsorption time, p H value, velocity on chitosan adsorptive action. After the optimal conditions experiment, Hg2＋ ,Ni2＋ ,Cr6＋ were determinated by flame atomic absorption spectrometry and the method has been applied to the determination of industrial wastewater.