Selective extraction and preconcentration of chromium using Moringa oleifera husks as biosorbent and flame atomic absorption spectrometry

被引：44
作者：
Alves, Vanessa N. [1 ]
Coelho, Nivia M. M. [1 ]
机构：
[1] Univ Fed Uberlandia, Inst Quim, BR-38400902 Uberlandia, MG, Brazil
来源：
MICROCHEMICAL JOURNAL | 2013年 / 109卷
关键词：
Moringa oleifera; Chromium; Selective extraction; SPECIATION ANALYSIS; SILICA-GEL; CR(III); CR(VI); WATER; SEPARATION; SAMPLES;
D O I：
10.1016/j.microc.2012.05.030
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this study a new method for selective extraction and preconcentration of chromium in water using Moringa oleifera husks as the solid phase with a flow injection system and detection by flame atomic absorption spectrometry was developed. The behavior of Cr(III) and Cr(VI) adsorption onto Moringa oleifera husks allowed the selective separation of Cr(III) in the pH range of 7-9 and Cr(VI) in the pH range of 1-2. The operational variables of the preconcentration system were optimized through full factorial and Doehlert designs. The limits of detection for Cr(III) and Cr(VI) were 1.92 and 2.45 mu g L-1 and the precision were below 1.63% and 0.08%, respectively. Results for recovery tests using different water samples were higher than 88% for Cr(III) and 81% for Cr(VI). (C) 2012 Elsevier B.V. All rights reserved.
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页码：16 / 22
页数：7
相关论文
共 21 条
  • [1] Ahalya N, 2007, J ENVIRON BIOL, V28, P765
  • [2] Determination of Low Levels of Lead in Beer Using Solid-Phase Extraction and Detection by Flame Atomic Absorption Spectrometry
    Alves, Vanessa N.
    Borges, Simone S. O.
    Neto, Waldomiro B.
    Coelho, Nivia M. M.
    [J]. JOURNAL OF AUTOMATED METHODS & MANAGEMENT IN CHEMISTRY, 2011,
  • [3] Determination of cadmium in alcohol fuel using Moringa oleifera seeds as a biosorbent in an on-line system coupled to FAAS
    Alves, Vanessa Nunes
    Mosquetta, Rafael
    Melo Coelho, Nivia Maria
    Bianchin, Joyce Nunes
    Di Pietro Roux, Kalya Cravo
    Martendal, Edmar
    Carasek, Eduardo
    [J]. TALANTA, 2010, 80 (03) : 1133 - 1138
  • [4] [Anonymous], 1987, ANALYST, V112, P199
  • [5] Characterization and use of Moringa oleifera seeds as biosorbent for removing metal ions from aqueous effluents
    Araujo, Cleide S. T.
    Alves, Vanessa N.
    Rezende, Helen C.
    Almeida, Ione L. S.
    de Assuncao, Rosana M. N.
    Tarley, Cesar R. T.
    Segatelli, Mariana G.
    Melo Coelho, Nivia M.
    [J]. WATER SCIENCE AND TECHNOLOGY, 2010, 62 (09) : 2198 - 2203
  • [6] Development of a flow system for the determination of low concentrations of silver using Moringa oleifera seeds as biosorbent and flame atomic absorption spectrometry
    Araujo, Cleide S. T.
    Alves, Vanessa N.
    Rezende, Helen C.
    Coelho, Nivia M. M.
    [J]. MICROCHEMICAL JOURNAL, 2010, 96 (01) : 82 - 85
  • [7] Separation and speciation of Cr(III) and Cr(VI) with Saccharomyces cerevisiae immobilized on sepiolite and determination of both species in water by FAAS
    Bag, H
    Türker, AR
    Lale, M
    Tunçeli, A
    [J]. TALANTA, 2000, 51 (05) : 895 - 902
  • [8] Box G. E., 1978, Statistics for experimenters, V664
  • [9] Speciation of Cr(III) and Cr(VI) after column solid phase extraction on Amberlite XAD-2010
    Bulut, V. N.
    Duran, C.
    Tufekci, M.
    Elci, L.
    Soylak, M.
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2007, 143 (1-2) : 112 - 117
  • [10] Distribution of hexavalent Cr species across the clay mineral surface-water interface
    Fritzen, MB
    Souza, AJ
    Silva, TAG
    Souza, L
    Nome, RA
    Fiedler, HD
    Nome, F
    [J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 296 (02) : 465 - 471
123