铋膜电极微分电位溶出法测定生物材料中痕量铅  

Determination of Trace Lead of Biological Materials Using Bismuth-Film Electrodes by Differential Potentiometric Stripping Analysis

作　　者：高云涛[1] 胥义能[1] 

机构地区：[1]云南民族大学化学与生物技术学院,昆明650031

出　　处：《分析科学学报》2006年第3期342-344,共3页Journal of Analytical Science

摘　　要：研究了镀铋膜电极替代镀汞膜电极痕量铅的微分电位溶出分析法(DPSA)。考察并优化了同位镀铋膜测定铅的条件。结果表明,在HAc-NaAc(pH=4.4)介质中,铅可在镀铋膜电极上得到灵敏的微分电位溶出峰;利用标准加入法对人尿及血中痕量铅进行了测定。本法避免了镀汞膜电极对人体健康及环境的危害。A novel substitutive differential potentiometric stripping analysis （DPSA） for the determination of Pb via bismuth-film electrode was proposed. In HAc-NaAc （ pH = 4. 4） buffer solutions,the sensitive stripping peaks （dt/dE） of the ions were obtained, The method has been applied to the determineation of trace lead in human blood and urine samples by standard addition method with satisfactory results.

关 键 词：血 尿 微分电位溶出 铋膜电极 铅 

分 类 号：O657.1[理学—分析化学]