Abstract:

In order to display the results and evaluate parameters were significantly different, the same samples detected by different instruments and methods, the surface water and groundwater in all 3 samples in Xinxiang City of Henan Province were chosen, in which 6 kinds of metal elements concentration were detected by the methods of atomic absorption spectrophotometry (AAS) and inductively coupled plasma optical emission spectrometry (ICP-OES), and differences in detection were analyzed; the water quality grade was evaluated. The results showed that all the 36 groups detection data had obviously differences, in which 14 indexes of pollution level were different. Detection limit of apparatus and methods were higher, which resulted to the detection limit restricted, and they were not the true and accurate measurement results, but from half of the detection limit value, the truth and accuracy of the environmental quality evaluation results were affected, the formulation and implementation of the environmental management measures were also influenced. It was better to choose the methods and apparatus of which detection limits were below the highest evaluation level.