直接测汞法和原子荧光法测定土壤中总汞的比对研究

摘要

采用 DMA－80直接测汞技术，与国标方法原子荧光法对土壤中总汞的测定进行了方法比对研究。试验结果表明，直接测汞法的检出限优于原子荧光法，精密度和准确性能够满足土壤实际样品的测定，对30个实际样品分析结果的比对表明，方法间无显著差异，该方法快速、准确、无污染。%Compared with atomic fluorescence spectrometry (as the national standard method)in determining the total mercury in soil,the DMA-80 direct mercury testing method had a better detecting limit.Precision and accuracy satisfied the requirement of an-alyzing practical soil samples.Furthermore,there is no significant differences between two methods on the basis of analyzing 30 practical soil samples because of its fast,accurate,non-pollution.