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.
出处
《分析科学学报》
CAS
CSCD
2006年第3期342-344,共3页
Journal of Analytical Science
关键词
血
尿
微分电位溶出
铋膜电极
铅
Human blood
Human urine
Differential potentiometric stripping analysis
Bismuth-film electrodes
Lead
