文档介绍：用直接测汞法快速测定土壤中总汞含量
王丹红吴文晞涂满娣
福建出入境检验检疫局技术中心,福州350003
摘要: 建立了直接测汞法快速测定土壤中总汞的方法。样品进行热分解,样品中的汞经金汞齐化管富集,加热破坏汞齐后,采用冷原子吸收光谱进行总汞分析。试验结果表明,采用直接测汞法测定土壤中总汞含量有良好的效果,完全可以替代国标方法GB/T 17136-1997。该方法快速、准确且无药品试剂污染,重现性优于采用国标方法测定的结果。
关键词:总汞;土壤;直接测定
Rapid Determination of Total Mercury in Soil by Method of Directly Determining Mercury
Wang Danhong Wu Wenxi Tumandi
(Fujian Entry-Exit Inspection and Quarantine Administration , Hudong , Fuzhou, Fujian 350003, P. R. China)
Abstract: To build the rapid method of determination of total mercury in soil by directly determining mercury. Soil sample was heated, Mercury of sample was volatilized through the collect tube and gathered together with gold during heating total mercury of sample was determined by cold atomic absorption spectrophotomerty. Result indicates that Method of directly determining mercury analyzes total mercury of Soil having excellent effect. Method of directly determining mercury can entirely substitute the national standard GB/T 17136-1997. Method of directly determining mercury is quick, accurate, no contaminate, and is superior to the national standard in the repeatability.
Keyword: Mercury; Soil; Direct measurement
汞是工业生产、科学研究中不可缺少的物质,在人类的生产生活中起着重要作用。但是,汞及其化合物一般均具有毒性,在其使用的过程中,一方面造福于人类,另一方面也造成环境的污染。目前,人类的生产活动已破坏了汞的自然平衡,使环境中汞的含量大大超过本底值,威胁着人类的健康。因此,世界各国都很重视环境中汞污染的监测,国标GB 15618《土壤环境质量标准》就将总汞含量列为重