慢扫速示波计时电位法在职业中毒检验中的应用——尿液中微量铊的测定  

Application of Slow Sweep Oscillographic Chronopotentiometry in Biological Monitoring ──Determination of Trace Thallium in Urine

作　　者：庞文生[1] 胡娟[2] 

机构地区：[1]平顶山工学院环境工程系,河南平顶山467000 [2]平顶山师范高等专科学校化学系,河南平顶山467002

出　　处：《工业卫生与职业病》2003年第5期257-259,共3页Industrial Health and Occupational Diseases

基　　金：国家自然科学基金资助 ( 2 9775 0 18)

摘　　要：目的　尿液中铊含量测定。方法　Tl+ 在 0 5mol/L的NH4NO3 +NH3 底液中有良好的示波图 ,应用慢扫速示波计时电位法测定。结果　Tl+ 浓度与示波图切口高度在 1 0～ 2 0 μg/L范围内成正比 ,检出下限为 0 5 μg/L。结论　方法简单 ,方便 ,回收率和相对标准偏差分别为 99 2 0 %和 0 4 4 %。Objective To develop a method for determination of trace amount of thallium in urine using slow sweep oscillographic chronopotentiometry.Methods Thallium ion has a favorable oscillogram at 0 5 mol/L in NH 4NO 3+NH 3 support electrolyte.After the urine sample was digested,the thallium concentration could be determined directly by slow sweep oscillographic chronopotentiometry.Results The standard curve is linear in the range of 1 0～20 μg/L.The detection limit of thallium is 0 5 μg/L.Conclusions The method is simple and easy to operate.The recovery rate and relative standard deviation are 99 20 % and 0 44 % respectively.

关 键 词：职业中毒 尿液检验 慢扫速示波计时电位法 铊 

分 类 号：R135.1[医药卫生—劳动卫生] R446.12[医药卫生—公共卫生与预防医学]