冷原子吸收分光光度法测定铅电解液中的汞  

Determination of Mercury in the Lead Electrolyte By Cold Vapor Atomic Absorption Spectrophotometric Method

作　　者：刘仁杰[1] 杨建兵[1] 

机构地区：[1]深圳中金岭南韶关冶炼厂质检室,广东韶关512024

出　　处：《甘肃冶金》2013年第2期99-100,113,共3页Gansu Metallurgy

摘　　要：本文建立了铅电解液中汞量测定的新方法。采用饱和硫酸钾溶液沉淀分离Pb2+和SiF26-,在硫酸-硝酸介质及加热条件下,用高锰酸钾和过硫酸钾消解样品,使所含汞全部转化为二价汞,通过冷原子吸收测汞仪于波长253.7 nm处进行测定。将本方法用于实际样品分析,汞的相对标准偏差不大于9.18%,回收率为98.6%～105.2%之间。In this paper a new method for determining the content of mercury in the lead electrolyte is proposed. Pb2＋ and SiF62-are separated by precipitation separation in saturated potassium sulfate solution. The Samples are digested by potassi- um permanganate and potassium persulfate in sulfuric acid-nitric acid medium and heating conditions. Mercury is complete- ly converted to divalent mercury and measured at wavelength of 253.7 nm by cold vapor atomic absorption mercury analy- zer. In the actual sample analysis, the relative standard deviation of mercury content is less than 9.18% and the recovery rate of mercury is between 98.6% to 105.2%.

关 键 词：汞 铅电解液 冷原子吸收分光光度法 

分 类 号：O657.31[理学—分析化学]