论文部分内容阅读
本文提出的测痕量汞的Hg-MTK-TritonX-100体系的灵敏度和选择性都优于常用的双硫腙法,而且是在水相比色,避免了有机溶剂对人体的危害。本法的桑德尔灵敏度可达0.00125μg/cm~2,是迄今胶束增溶光度测定汞的最灵敏的方法。实验部分一、主要仪器和试剂 72型分光光度计和pHS-2型酸度计汞标准溶液:称取HgCl_2(AR)0.1354g,以5ml 1∶1HCl溶解,转入100ml容量瓶中,稀至刻度,用EDTA直接滴定法标定,浓度为0.942mg/ml。
The sensitivity and selectivity of Hg-MTK-TritonX-100 system proposed in this paper are better than those of the commonly used dithizone method, and the colorimetric in water, to avoid the harm of organic solvents to the human body. Sandal sensitivity of this method up to 0.00125μg / cm ~ 2, micellar solubilization has so far been the most sensitive method for the determination of mercury. Experimental part A, the main equipment and reagents 72 spectrophotometer and pHS-2 pH meter mercury standard solution: Weigh HgCl_2 (AR) 0.1354g, dissolved in 5ml 1: 1 HCl, transferred to 100ml volumetric flask, dilute to the mark , Titrated with EDTA direct titration, the concentration of 0.942mg / ml.