Dispersive liquid-liquid microextraction based on the solidification of floating organic drop followed by ICP-MS for the simultaneous determination of heavy metals in wastewaters

被引：63
|
作者：
Li, Yong [1 ]
Peng, Guilong [1 ]
He, Qiang [1 ]
Zhu, Hui [1 ]
Al-Hamadani, Sulala M. Z. F. [1 ]
机构：
[1] Chongqing Univ, Minist Educ, Key Lab Ecoenvironm Three Gorges Reg, Chongqing 400045, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2015年 / 140卷
关键词：
Dispersive liquid-liquid microextraction; Solidification of floating organic drop; Inductively coupled plasma mass spectrometry; Wastewater samples; CLOUD-POINT EXTRACTION; ATOMIC-ABSORPTION-SPECTROMETRY; OPTICAL EMISSION-SPECTROMETRY; WATER SAMPLES; TRACE-METALS; SPECTROPHOTOMETRIC DETERMINATION; ENVIRONMENTAL-SAMPLES; PRECONCENTRATION; CHROMATOGRAPHY; ALUMINUM;
D O I：
10.1016/j.saa.2014.12.091
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
In the present work, a dispersive liquid-liquid microextraction based on the solidification of floating organic drop (DLLME-SFO) combined with inductively coupled plasma mass spectrometry (ICP-MS) was developed for the determination of Pb, Co, Cu, Ni, Zn. The influences of analytical parameters, including pH, extraction solvent volume, disperser solvent volume, concentration of chelating agent on the quantitative recoveries of Pb, Co, Cu, Ni, Zn were investigated. The effect of the interfering ions on the analytes recovery was also investigated. Under the optimized conditions, the limits of detection were 0.97-2.18 ng L-1. The relative standard deviations (RSDs) were 2.62-4.51% (n = 7, C = 20 ng L-1). The proposed method was successfully applied for the analysis of ultra trace metals in wastewater samples. (C) 2014 Elsevier B.V. All rights reserved.
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页码：156 / 161
页数：6
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