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近年来,Jackwerth、Vanderborgh等提出双硫腙、DDTC、8-羟基喹啉形成的金属螯合物吸附于活性炭,提高了吸附效果。本法采用乙基黄原酸钾-活性炭吸附富集,火焰原子吸收光谱测定天然水中Cu、Fe、Co、Cd、Zn,取得满意结果。 1.主要试剂、仪器及工作条件: 1％乙基黄原酸钾溶液;活性炭粉(分析纯)用盐酸和氢氟酸的1:1混合液处理。蔡司AAS-1型原子吸收分光光度计;铜、铁、钴、镉、锌空心阴极灯。
In recent years, Jackwerth, Vanderborgh proposed dithizone, DDTC, 8-hydroxyquinoline metal chelate formed on the activated carbon adsorption to improve the adsorption effect. This method uses potassium ethylxanthate - activated carbon adsorption enrichment, flame atomic absorption spectrometry determination of natural water Cu, Fe, Co, Cd, Zn, and achieved satisfactory results. 1. The main reagents, equipment and working conditions: 1% potassium ethyl xanthate solution; activated carbon powder (analytical grade) with hydrochloric acid and hydrofluoric acid 1: 1 mixture. Zeiss AAS-1 atomic absorption spectrophotometer; copper, iron, cobalt, cadmium, zinc hollow cathode lamp.