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工业废水中重金属离子的测定,一般采用比色法及极谱法,近年来也广泛采用原子吸收法。由于废水治理过程中,水样中各种重金属离子浓度差别很大,有的竟高达几十甚至几百 ppm,而有些却低于国家排放标准。因此我们提出用离子交换富集-火焰原子吸收法测定废水中微量重金属离子的方法,该法能以一个水样,同时测定5种金属离子,方法快速、准确,已用于含重金属离子废水的控制分析,结果令人满意。
Industrial wastewater determination of heavy metal ions, the general colorimetric method and polarographic method, also widely used in recent years, atomic absorption method. Due to the wastewater treatment process, the concentrations of various heavy metal ions in the water samples vary widely, sometimes up to tens or even hundreds of ppm, while others are lower than the national emission standards. Therefore, we proposed a method for the determination of trace heavy metal ions in waste water by ion-exchange enrichment-flame atomic absorption spectrometry. This method can determine five kinds of metal ions simultaneously with one water sample. The method is rapid and accurate and has been applied to wastewater containing heavy metal ions Control analysis, the results are satisfactory.