氢化物原子荧光法与氢化物原子吸收法检测水质砷方法的比较

The comparison of detecting arsenic content tests in water quality with HG-AFS and HG-AAS detectors

目的比较氢化物原子荧光法与氢化物原子吸收法测定水质砷的差异。方法在10份不同类型的水样中分别用两种方法进行分析测定,比较其测定结果、方法的回收率、准确度和精密度。结果 10份水样用两种方法测定,结果经配对t检验,差异无统计学意义（P〉0.05）。氢化物原子荧光法的回收率为98.4%~104.0%,标准偏差0.054,相对标准偏差为1.07%。氢化物原子吸收法的回收率是98.8%~103.6%,标准偏差为0.093,相对标准偏差为1.86%。结论两种检测方法均能达到较好的准确度和精密度,值得应用推广和普及。

Objective： Comparison of the difference between the water quality - Determination of arsenic by Atomic Fluo- rescence Spectrometry with hydride atomic fluorescence spectrometry and hydride generation absorption spectrometry. Method： With 10 copies respectively in different types of water samples for analysis were determined by 2 methods, compare the results of determination, method recovery rate, accuracy and precision. Result： 10 water samples were measured by 2 methods, the results of the paired t test, no significant difference （P 〉 0. 05 ）. Recovery by Hydride Generation Atomic Fluorescence Spectrometry rate is 98.4% ~ 104. 0% , the standard deviation is 0. 054, the relative standard deviation of 1.07% . Recovery of hydride generation atomic absorption spectrometry rate is 98. 8%-103.6% , the standard deviation is 0. 093, the relative standard deviation of 1.86% . Conclusion： 2 detection methods were able to achieve better accuracy and precision, it is worthy of application and popularization.