Solid phase extraction of cadmium on 2-mercaptobenzothiazole loaded on sulfur powder in the medium of ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate and cold vapor generation-atomic absorption spectrometric determination

被引:74
作者
Pourreza, N. [1 ]
Ghanemi, K. [1 ]
机构
[1] Shahid Chamran Univ, Fac Sci, Dept Chem, Ahvaz, Iran
关键词
Cadmium; Sulfur; Ionic liquid; Cold vapor generation; 2-Mercaptobenzothiazole; Solid phase extraction; ROOM-TEMPERATURE; WATER; PRECONCENTRATION; NICKEL; LEAD; SYSTEM; MERCURY; SAMPLES; COPPER;
D O I
10.1016/j.jhazmat.2010.01.122
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A novel solid phase extractor for preconcentration of cadmium at ng L-1 levels has been developed. Cadmium ions were retained on a column packed with sulfur powder modified with 2-mercaptobenzothiazole (2-MBT) in the medium of 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]+PF6-) ionic liquid. The presence of ionic liquid during modification of sulfur enhanced the retention of cadmium ions on the column. The retained cadmium ions were eluted with 2 mol L-1 solution of HCl and measured by cold vapor generation-atomic absorption spectrometry (CVG-AAS). By using reaction cell-gas liquid separator (RC-GLS), gaseous cadmium vapors were produced and reached the atomic absorption spectrometer, instantaneously. The influence of different variables on both processes of solid phase extraction and CVG-MS determination of cadmium ions was investigated. The calibration curve was linear in the range of 10-200 ng L-1 of cadmium in the initial solution with r = 0.9992 (n = 8) under optimum conditions. The limit of detection based on three times the standard deviation of the blank (3S(b), n = 10) was 4.6 ng L-1. The relative standard deviation (R.S.D.) of 25 and 150 ng L-1 of cadmium was 4.1 and 2.2% (n = 8), respectively. The procedure was validated by the analysis of a certified reference material (DORM-3), water and fish samples. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:566 / 571
页数:6
相关论文
共 30 条
  • [21] Determination of mercury in water and fish samples by cold vapor atomic absorption spectrometry after solid phase extraction on agar modified with 2-mercaptobenzimidazole
    Pourreza, N.
    Ghanemi, K.
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2009, 161 (2-3) : 982 - 987
  • [22] Determination of cadmium by flame atomic absorption spectrometry after preconcentration on naphthalene-methyltrioctylammonium chloride adsorbent as tetraiodocadmate (II) ions
    Pourreza, N
    Mousavi, HZ
    [J]. ANALYTICA CHIMICA ACTA, 2004, 503 (02) : 279 - 282
  • [23] The use of a modified Multimode Sample Introduction System for the simple and rapid determination of cadmium by chemical vapour generation atomic absorption spectrometry
    Ritschdorff, ET
    Fitzgerald, N
    Mclaughlin, RLJ
    Brindle, ID
    [J]. SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2005, 60 (01) : 139 - 143
  • [24] SANZMEDEL A, 1995, ANAL PROC, V32, P49
  • [25] WANGERSKY PJ, 2001, MAR CHEM, P86
  • [26] Determination of cadmium in rice and water by tungsten coil electrothermal vaporization-atomic fluorescence spectrometry and tungsten coil electrothermal atomic absorption spectrometry after cloud point extraction
    Wen, Xiaodong
    Wu, Peng
    Chen, Li
    Hou, Xiandeng
    [J]. ANALYTICA CHIMICA ACTA, 2009, 650 (01) : 33 - 38
  • [27] Solid phase extraction of lead (II), copper (II), cadmium (II) and nickel (II) using gallic acid-modified silica gel prior to determination by flame atomic absorption spectrometry
    Xie, Fazhi
    Lin, Xucong
    Wu, Xiaoping
    Xie, Zenghong
    [J]. TALANTA, 2008, 74 (04) : 836 - 843
  • [28] Study on solid phase extraction and graphite furnace atomic absorption spectrometry for the determination of nickel, silver, cobalt, copper, cadmium and lead with MCI GEL CHP 20Y as sorbent
    Yang, Guangyu
    Fen, Weibo
    Lei, Chun
    Xiao, Weilie
    Sun, Handong
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2009, 162 (01) : 44 - 49
  • [29] Zaijun L., 2007, J PHARM BIOMED ANAL, V43, P1609, DOI DOI 10.1016/J.JPBA.2006.11.032
  • [30] Preconcentration of nickel and cadmium by TiO2 nanotubes as solid-phase extraction adsorbents coupled with flame atomic absorption spectrometry
    Zhou, Qing-xiang
    Zhao, Xin-ning
    Xiao, Jun-ping
    [J]. TALANTA, 2009, 77 (05) : 1774 - 1777