第 38 卷第 5 期Vol. 38 No. 5
2008 年 10 月Oct 2008

所属栏目:分析与测试

火焰原子吸收光谱法同时测定尿液中钾和钠
易海艳1,2,胡建安1 (1.中南大学 公共卫生学院,湖南 长沙 410007;2 .湖南省劳动卫生职业病防治所,湖南 长沙 410007)
摘 要:采用原子吸收光谱仪同时测定了尿液中钾和钠的含量,并确立了测定钾和钠的优惠条件。加入氯化铯可消除电离干扰,当稀释比例达到1 ∶ 1 000 时,可以消除尿基质的干扰。钾和钠的检测限分别为0.004 9 mg/L和0.004 0 mg/L,测定范围分别为0.2~5.0 mg/L和0.2~3.0 mg/L,方法回收率分别为99.6%~108.7%和99.2%~101.3%,变异系数分别为0.56%~1.08%和0.41%~0.82%。结果表明该方法准确、灵敏度高、简便快速。
关键词:火焰原子吸收光谱法;钾;钠;尿液
中图分类号:O657.31  文献标识码:B  文章编号:1009-9212(2008)05- 0068-03
Simultaneous Determination of K and Na in Urine with FAAS
YI Hai-yan1,2,HU Jian-an1 (1. School of Public Health Central South University,Changsha 410007,China; 2. Hunan Provincial Institute for Labor Hygiene and Occupational Diseases,Changsha 410007,China)
Abstract:The simultaneous determination of potassium(K)and sodium(Na)content in urine was established using the atomic absorption spectrometer. The optimized working conditions were ascertained. In order to remove the disturbance of ionization,cesium chloride was added. The disturbance of urinary substrate could be avoided after the urines were diluted to 1∶100. The detection limit of K and Na was 0.004 9 mg/L and 0.004 0 mg/L,determination range was 0.2~5.0 mg/L and 0.2~3.0 mg/L,the recovery was 99.6%~108.7% and 99.2%~101.3%,the RSD was 0.56%~1.08% and 0.41%~0.82%,respectively. The results showed that the method was accurate,sensitive and simple.
Key words:atomic absorption spectrometer;potassium;sodium;urine
作者简介:易海艳(1980-),女,湖南洪江人,硕士研究生,检验师,主要从事卫生检验工作。
收稿日期:2008-09-1