环境与职业医学2004，Vol.21Issue(4)：304-306,3.
塞曼效应石墨炉原子吸收光谱法直接测定乳汁铅
Direct Determination of Lead in Human Milk by Graphite Furnace Atomic Absorption Spectrometer with Zeeman Correction
李凭建 1盛叶舟1
作者信息
- 1. 复旦大学公共卫生学院劳动卫生教研室,上海,200032
- 折叠
摘要
Abstract
[Objective] To study the method for determining human milk lead by Graphite Furnace Atomic Absorption Spectrometry(GFAAS). [Methods] Human milk lead was determined by GFAAS.The sample was diluted 1:4 in volume with the matrix modifier and nitric acid,the standard calibration curve was employed and the quality control was executed.Lead in milk sample was determined directly by GFAAS without digestion. [ Results] The lead concentration curve was linear within the range of(0～ 150)μg/L. The precision(RSD% )was 2.1 ～ 6.0 for within-batch and 5.8 ～ 8.1 for between-batch. The limit of detection was 0.3 μg/L, based on three times the S.D.The determined lead level of the SRM 955 blood lead reference material from National Bureau of Standard(NBS in USA) was(58.6±3.2) μg/L. It was within the permissible error range compared to the reference value(57.0 ± 5.0)μg/L. [Conclusion] The proposed method is sensitive and simple. The accuracy and precision can meet the requirement.关键词
原子吸收光谱法/乳汁/铅Key words
atomic absorption spectrometry/human milk/lead分类
医药卫生引用本文复制引用
李凭建,盛叶舟..塞曼效应石墨炉原子吸收光谱法直接测定乳汁铅[J].环境与职业医学,2004,21(4):304-306,3.
