Ionic liquid-based hollow fiber supported liquid membrane extraction combined with thermospray flame furnace AAS for the determination of cadmium

被引：33
作者：
Zeng, Chujie [1 ]
Hu, Yan [2 ]
Luo, Jiwen [1 ]
机构：
[1] Yulin Normal Coll, Dept Chem & Mat, Yulin 537000, Guangxi, Peoples R China
[2] Chengdu Text Coll, Text Printing Chem & Environm Engn Dept, Chengdu 611731, Sichuan, Peoples R China
来源：
MICROCHIMICA ACTA | 2012年 / 177卷 / 1-2期
关键词：
Hollow fiber; Thermospray flame furnace atomic absorption spectrometry; Ionic liquid; Cd; CLOUD POINT EXTRACTION; ATOMIC-ABSORPTION-SPECTROMETRY; VAPORIZATION ICP-MS; PHASE MICROEXTRACTION; WATER SAMPLES; CD; PRECONCENTRATION; SPECIATION; PB;
D O I：
10.1007/s00604-011-0748-3
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
We have developed a simple and effective method for hollow fiber liquid-phase microextraction of cadmium. It is based on the use of a room temperature ionic liquid (RTIL) and was coupled to thermospray flame furnace AAS. The RTIL was placed in the pores of a polypropylene hollow fiber (acting as a liquid membrane) and also used as the acceptor solution. Ammonium pyrrolidinedi-thiocarbamate (APDC) was used as the chelating agent. The effects of the concentration of APDC, the pH of samples, stirring rates, extraction time, and potential interferences were optimized to result in a detection limit of 9 ng L-1 and an enrichment factor of 90. The relative standard deviation is 4.7% (at 0.5 ng mL(-1), for n=5). The method was successfully applied to the determination of cadmium.
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收藏
页码：53 / 58
页数：6
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