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天然水中的重金属元素危害着人类的健康,必须进行监测。螯合树脂对于重金属离子具有很强的吸附能力,而对于碱金属离子几乎没有吸附作用,对于碱土金属离子只有很小的吸附作用,选择性好,它常被用来分离和富集水质中的重金属元素。我们为扩大发射光谱法在水质分析中的应用范围进行了研究。(1)用螯合树脂分离了大部分基体物质,减少了主要组分对光谱测定结果的影响,提高了方法的准确度,回收率为85～110%;(2)经富集了的重金属元素用光谱溶液干渣法测定,多数元素的检出限为0.01微克,按本
Heavy metals in natural water endanger human health and must be monitored. Chelating resins have strong adsorption capacity for heavy metal ions, little adsorption to alkali metal ions, little adsorption to alkaline earth metal ions and good selectivity. They are often used to separate and enrich water Heavy metal elements. We have studied the application of extended emission spectroscopy in water quality analysis. (1) Separation of most of matrix materials by chelating resins reduces the influence of the main components on the spectrometric results and improves the accuracy of the method with a recovery of 85-110%. (2) The enriched heavy metals The elemental spectrophotometric determination of dry residue method, the detection limit of most elements is 0.01 micrograms, according to this