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  • Title: [Preconcentration with crosslinked chitosan for determination of trace manganese in waters by flame atomic absorption spectrometry].
    Author: Xue AF, Chen H, Luo XC, Wu YQ, Xie JS.
    Journal: Guang Pu Xue Yu Guang Pu Fen Xi; 2005 Sep; 25(9):1514-7. PubMed ID: 16379305.
    Abstract:
    A novel method for the preconcentration with crosslinked chitosan (CCTS) and determination of trace manganese in waters by flame atomic absorption spectrometry has been presented. The absorption rate of manganese (VII) by CCTS was 98% at pH 3.00. The effect of preconcentration time, dosage of CCTS, temperature, sample volume and co-existing elements have been investigated. The mechanism of adsorption of CCTS for Mn(VII) was also discussed. The detection limit of the method was 1.86 microg x L(-1), and the relative standard deviation (RSD) was 2.0% (n = 10). The method has been applied to the determination of trace manganese in south lake and Changjiang water with satisfactory results.
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