不同分析方法对水中金属测定效果的影响

The Effect of Different Analytical Methods on the Determination of Metal in Water

本文以水质检测工作为出发点,对不同分析方法进行对比,以此来判定不同分析方法在进行水质测定时,对结果造成的差异与影响。2019年在选择分析方法时,主要选择原子吸收分光光度法(AAS)与电感耦合等离子体质谱法(ICP-MS),针对莆田市1月、5月、9月地下水与地表水(水库水)中金属含量的变化情况进行研究,以此来判定水质污染情况。实验结果表明:虽然选择的水质检测方法不同时,地下水与地表水中金属元素的测定结果存在差异,但不影响对水质类别的评价。此外,2种分析方法的主要区别是ICP-MS能一次对多元素进行测定,并且能检测出痕量含量。

This article takes the water quality test work as the starting point,mainly carries on the comparison to the different analysis method,in order to judge the difference and the influence which the different analysis method causes to the result when carries on the water quality test.In the selection of analysis methods,atomic absorption spectrophotometry(AAS)and inductively coupled plasma mass spectrometry(ICP-MS)were mainly used to study the changes of metal content in groundwater and surface water(reservoir water)in January,May and September in Putian City,so as to determine the results of water pollution.Firstly,the experimental materials and methods are described.Secondly,the experimental results are analyzed,specifically,the changes of manganese,iron,cadmium and lead.Finally,the experimental results are discussed.According to the experimental results,although the selected methods of water quality detection are different,the expression of the determination results of metal elements in groundwater and surface water are different,but it does not affect the evaluation of water quality classification.In addition,the main difference between the two analytical methods is that icP-MS can detect multiple elements at one time and can detect trace amounts.