摘要
对土壤中总汞的两种不同测定方法进行了对比分析。通过方法检出限、精密度、准确度和加标回收率的对比,结果表明,水浴消解-原子荧光光谱法检出限为2.1 ng/g,精密度为2.52~4.63%,加标回收率介于94%~104%;汞分析仪直接测定法检出限为0.08 ng/g,精密度为2.89~5.61%,加标回收率介于90%~102%。相比水浴消解-原子荧光法,直接测定法操作更加简单、便捷,而且无繁琐的前处理环节,适于大批量土壤中总汞的分析测定,是一个比较理想的分析方法。
This article compared and analyzed two determination methods of total mercury in soil,through results of the detection limit,precision,accuracy and the recovery of standard addition. The results showed that the detection limit was 2. 1ng / g,the precision was 3. 98% ~ 4. 97%,the recovery of standard addition was 94% ~ 104% by Water Bath- Atomic Fluorescence Spectrometry. The detection limit was 0. 08 ng / g,the precision was 4. 54% ~ 6. 41%,the recovery of standard addition was 90 ~102% by mercury analyzer. Compared with the Water Bath- Atomic Fluorescence Spectrometry,the direct measurement method by mercury analyzer is more simple,more convenient,and no tedious pre- treatments. It is suitable for measurement of large quantities of total mercury in soil,and is an ideal analysis method.
出处
《环境科学与管理》
CAS
2016年第6期146-148,174,共4页
Environmental Science and Management
关键词
土壤
总汞
不同测定方法
对比分析
soil
total mercury
different measurement method
comparison and analysis
