Selective solid phase extraction and preconcentration of trace mercury(II) with poly-allylthiourea packed columns

被引：0
作者：
Wenshan Qu
Yunhui Zhai
Shuangming Meng
Yueqin Fan
Qiang Zhao
机构：
[1] Shanxi Datong University,School of Chemistry and Chemical Engineering
[2] Lanzhou University,Department of Chemistry
来源：
Microchimica Acta | 2008年 / 163卷
关键词：
Mercury determination; Mercury(II); Poly-allylthiourea; Preconcentration; Solid phase extraction;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A new method for selective solid-phase extraction and preconcentration of trace mercury(II) from aqueous solution was developed by using poly-allylthiourea as a new extractant. The procedure is based on the retention of analyte in the form of thiourea complex on a mini column of polymer resin. The effects of pH, eluent type, eluent concentration, sample volume, sample flow rate, and foreign ions on the recovery of the analyte were investigated using model solutions. At optimal pH value, the extraction capacity of the new sorbent was 1.13 mmol g−1. The adsorption behavior of mercury(II) on the sorbent can be described by a Langmuir adsorption isotherm equation. The method was validated by analyzing a certified reference material with the results being in agreement with those quoted by manufacturers. The method was applied to the determination of trace inorganic mercury(II) in natural water samples and vegetables with satisfactory results.
引用
收藏
页码：277 / 282
页数：5
相关论文
共 95 条
[1]  
Liu YW(2006)Biosorption and preconcentration of lead and cadmium on waste Chinese herb Pang Da Hai J Hazard Mater B 135 389-undefined
[2]  
Chang XJ(2006)Preconcentration of copper using double-imprinted polymer via solid phase extraction Anal Chim Acta 565 145-undefined
[3]  
Guo Y(2005)An ion-imprinted functionalized silica gel sorbent prepared by a surface imprinting technique combined with a sol-gel process for selective solid-phase extraction of cadmium(II) Anal Chem 77 1734-undefined
[4]  
Meng S(2007)Selective solid-phase extraction of trace cadmium(II) with an ionic imprinted polymer prepared from a dual-ligand monomer Anal Chim Acta 593 123-undefined
[5]  
Birlik E(1999)Selective solid phase extraction of mercury(II) by silica gel-immobilized-dithiocarbamate derivatives Anal Chim Acta 398 297-undefined
[6]  
Ersöz A(1993)Speciation of mercury in natural water by capillary gas chromatography with a microwave-induced plasma emission detector following preconcentration using a dithiocarbamate resin microcolumn installed in a closed flow injection system Analyst 118 1007-undefined
[7]  
Denizli A(1994)On-line preconcentration of inorganic mercury and methylmercury in sea-water by sorbent-extraction and total mercury determination by cold vapour atomic absorption spectrometry Talanta 41 1833-undefined
[8]  
Say R(1993)Immobilized cysteine as a reagent for preconcentration of trace metals prior to determination by atomic absorption spectrometry J Anal At Spectrom 8 1011-undefined
[9]  
Fang GZ(2006)Selective determination of trace mercury(II) after preconcentration with 4-(2-pyridylazo)-resorcinol-modified nanometer-sized SiO2 particles from sample solutions Microchim Acta 154 253-undefined
[10]  
Tan J(2000)Selective pre-concentration and solid phase extraction of mercury(II) from natural water by silica gel-loaded dithizone phases Anal Chim Acta 415 33-undefined
12345678910