Determination of Trace Antimony (III) in Water Samples with Single Drop Microextraction Using BPHA-[C4mim][PF6] System Followed by Graphite Furnace Atomic Absorption Spectrometry

Xiaoshan Huang; Mingxin Guan; Zhuliangzi Lu; Yiping Hang

doi:10.1155/2018/8045324

Determination of Trace Antimony (III) in Water Samples with Single Drop Microextraction Using BPHA-[C₄mim][PF₆] System Followed by Graphite Furnace Atomic Absorption Spectrometry

Int J Anal Chem. 2018 Aug 1:2018:8045324. doi: 10.1155/2018/8045324. eCollection 2018.

Authors

Xiaoshan Huang¹, Mingxin Guan¹, Zhuliangzi Lu¹, Yiping Hang¹

Affiliation

¹ School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.

Abstract

A new sensitive method for antimony (III) determination by graphite furnace atomic absorption spectrometry (GFAAS) has been developed by using N-benzoyl-N-phenylhydroxylamine (BPHA) and 1-butyl-3-methylimidazolium hexafluorophosphate ([C₄mim][PF₆]) single drop microextraction. The single drop microextraction (SDMM) system is more competitive compared with other traditional extraction methods. Under the optimized conditions, the limit of detection (signal-to-noise ratio is 3) and the enrichment factor of antimony (III) are 0.01 μg·L^-1 and 112, respectively. The relative standard deviation of the 0.5 μg·L^-1 antimony (III) is 4.2% (n=6). The proposed method is rather sensitive to determinate trace antimony (III) in water.