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Int. J. Mol. Sci. 2011, 12(6), 4009-4020; doi:10.3390/ijms12064009
Article

Synthesis of Cross-Linked Chitosan and Application to Adsorption and Speciation of Se (VI) and Se (IV) in Environmental Water Samples by Inductively Coupled Plasma Optical Emission Spectrometry

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Received: 13 May 2011 / Revised: 29 May 2011 / Accepted: 9 June 2011 / Published: 14 June 2011
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
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Abstract

A new type of cross-linked chitosan was synthesized with Diethylene Triamine (DCCTS). The adsorption of Se (VI) on DCCTS was studied. The effect factors on adsorption and the adsorption mechanism were considered. The results indicated that the DCCTS could concentrate and separate Se (IV) at pH = 3.6; the maximum adsorption efficiency was 94%, the adsorption equilibrium time was 30 min; the maximum adsorption capacity was 42.7 mg/g; the adsorption fitted Langmuir equation. A novel method for speciation of Se (VI) and Se (IV) in environmental water samples has been developed using DCCTS as adsorbent and ICP–OES as determination means. The detection limit of this method was 12 ng/L, the relatively standard deviation was 4.5% and the recovery was 99%~104%.
Keywords: cross-linked chitosan; speciation; inductively coupled plasma optical emission spectrometry; selenium cross-linked chitosan; speciation; inductively coupled plasma optical emission spectrometry; selenium
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Dai, J.; Ren, F.L.; Tao, C.Y.; Bai, Y. Synthesis of Cross-Linked Chitosan and Application to Adsorption and Speciation of Se (VI) and Se (IV) in Environmental Water Samples by Inductively Coupled Plasma Optical Emission Spectrometry. Int. J. Mol. Sci. 2011, 12, 4009-4020.

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