分析化学2011，Vol.39Issue(11)：1776-1777,2.DOI:10.3724/SP.J.1096.2011.01776
离子液体[Bmim]PF6萃取-火焰原子吸收法测定水中痕量镉
Determination of Trace Cadmium in Water by Flame Atomic Absorption Spectrometry/with Ionic Liquid Extraction
王良 1李清 1闫永胜 2崔运成1
作者信息
- 1. 吉林师范大学化学学院,四平 136000
- 2. 江苏大学化学化工学院,镇江 212013
- 折叠
摘要
Abstract
A novel method for the separation and determination of trace cadmium in environmental water sample by flame atomic absorption spectrometry (FAAS) with ionic liquid extraction was proposed. When the acidity of the solvent was pH 8, ionic liquid 1-butyl-3-methylimi dazolium hexafluorophosphate ([Bmim]PF6) was used as extractant, dithizone as the chelant, the sample was extracted for 3 min and determined by FAAS. The research result indicated that under optimum conditions, there was favorable linearity relation between 0. 15 and 58. 2 μg/L, detection limit (3δ) was 0. 095 ng/L (n=11). The recovery of this method was in the range of 90. 0% -108. 0% . The relative standard deviation is less than 5. 8% for the analysis of practical sample.关键词
Dithizone/ Ionic liquid/ Cadmium/ Flame atomic absorption spectrometryKey words
Dithizone/ Ionic liquid/ Cadmium/ Flame atomic absorption spectrometry引用本文复制引用
王良,李清,闫永胜,崔运成..离子液体[Bmim]PF6萃取-火焰原子吸收法测定水中痕量镉[J].分析化学,2011,39(11):1776-1777,2.
