砷、硒对DMA-80自动测汞仪仪器性能的影响分析

Analysis of the Impact of Arsenic and Selenium on the Performance of DMA-80 Automatic Mercury Detector

为了研究砷、硒对DMA-80自动测汞仪仪器性能的影响,通过加入砷、硒,研究其对自动测汞仪检出限和对标准物质测定的影响。结果表明存在砷、硒浓度为0.5mg/L的情况下,将会提高仪器检出限,但对样品测定准确度和精密度影响不大。

In order to study the impact of arsenic and selenium on the performance of DMA-80 automatic mercury meter, this paper studied the impact of automatic mercury detector on detection limit and standard substance determination by adding high concentration of arsenic and selenium. The results showed that the detection limit of the instrument would be increased when the concentration of arsenic and selenium was 0.5mg/L. However the accuracy and precision of the sample determination were not significantly affected.