[钨酸涂层石墨炉原子吸收光谱法测定癌症患者血清中痕量锂的方法]

[Method for the determination of trace Li in serum of cancer patients by tungstate-coated graphite furnace atomic absorption spectrometry].

作者信息

Zhou J, Sun X

机构信息

Department of Orthopaedics, First Affiliated Hospital, Anhui Medical University, 230022 Hefei.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 1999 Aug;19(4):604-6.

PMID:15818970

Abstract

Using a tungstate coated graphite tube. The sensitivity of Li was significantly increased and trace Li in serum samples was determined by Zeeman graphite AAS with (NH4)2SO4 as a matrix modifier. The effects of different metal ions and biological matrix were eliminated. The characteristic concentration is 5.53 x 10(-3) microg x mL(-/1)%. The recovery is greater than 93.72%. The relative standard deviation is less than 8.93%.

摘要

使用钨酸盐涂层石墨管。锂的灵敏度显著提高，血清样品中的痕量锂通过塞曼石墨原子吸收光谱法，以硫酸铵作为基体改进剂进行测定。消除了不同金属离子和生物基体的影响。特征浓度为5.53×10⁻³微克·毫升⁻¹%。回收率大于93.72%。相对标准偏差小于8.93%。