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ICP—AES对许多元素的检出限远远低于地面水环境质量标准,直接测定即可以满足要求。然而ICP—AES摄谱法在直接分析天然水中痕量元素时,仍存在灵敏度不足的问题。目前关于富集分离技术的研究,已有许多报道。利用铁与铜试剂(二乙基二硫代氨基甲酸)(Fe—DDTC)的共沉淀作用,可同时分离富集水中多种痕量元素。本文在文献的基础上,进行了高倍数(100倍)富集,ICP—AES摄谱法的测定条件实验,选择了干扰较小的分析线,研究了铁工
The ICP-AES detection limits for many elements are far below the surface water environmental quality standards and can be directly measured to meet the requirements. However, ICP-AES spectroscopy still has the problem of insufficient sensitivity when it directly analyzes trace elements in natural water. At present, there are many reports on the research of enrichment and separation technology. With the coprecipitation of iron and copper reagent (diethyldithiocarbamic acid) (Fe-DDTC), many trace elements in water can be separated and enriched simultaneously. Based on the literature, this paper carried out high magnification (100 times) enrichment, ICP-AES spectrometry determination of the experimental conditions, the selection of the interference of smaller analytical lines, the Iron Works