微波消解-GFAAS法测定水处理剂中的痕量镉

Determination of trace cadmium in water treatment reagent with microwave digestion-GFAAS method

采用微波制样技术 ,用石墨炉原子吸收法测定水处理剂聚合氯化铝中痕量镉 .结果表明 ,方法的的线性范围为 0～ 2 0 μg/L ,检出限为 0 .13μg/L ,相对标准偏差为 2 .6 % ,回收率为 98.0 % .该方法准确、快速、简便 。

With the microwave digestion technique and graphite furnace atomic absorption spectrometry method, the trace cadmium in water treatment reagent is measured. The linear range is 0~20μg/L, the detection limit is 0.13μg/L, the relative standard deviation is 2.6%, and the recovery is 98.0%. The proposed method is proved to be accurate, rapid and convenient. It has been used in the determination of water treatment reagent.