微波消解-原子荧光法测定发汞
Microwave Digestion Atomic Fluorescence Spectrometry to Determine Mercury Level in Human Hair
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摘要:
目的 建立人发汞的微波消解-原子荧光光谱测定法。 方法 发样经微波消解后,原子荧光光谱法测定。 结果 方法检出限为0.026 μg/L,在0~1.000 μg/L范围内,标准曲线相关系数为0.999 5,相对标准偏差为1.89%~3.23%,平均回收率为92.0%~98.7%。 结论 本实验选择的实验条件均较理想,由此建立的方法较传统方法更准确、灵敏、简便,适用于职业监测等大批样品的检测。 Abstract:Objective To establish a method to determine hair mercury by atomic fluorescence spectrometry after microwave digestion. Methods Hair samples were prepared by microwave digestion and mercury contents in hair samples were determined by atomic fluorescence spectrometry. Results The detection limit of this method for hair samples was 0.026 μg/L for mercury. The specification curve correlation coefficient was 0.999 5. The relative standard deviation was 1.89%-3.23%, and the average recovery ranged from 92.0% to 98.7%. Conclusion Strengths of the study lie in the ideal experimental conditions and the accurate, sensitive, and simple method it finally built which applies to the detection of samples in large amount.
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