Journal
ANALYTICA CHIMICA ACTA
Volume 416, Issue 2, Pages 191-196Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0003-2670(00)00886-2
Keywords
aminopropylbenzoylazo-2-mercaptobenzothiazole bonded to silica gel; preconcentration; separation; Hg (II); environmental samples; UV-VIS spectrophotometry
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This paper reports a simple and highly selective method for the preconcentration and separation of trace Hg(II) with aminopropylbenzoylazo-2-mercaptobenzothiazole bonded to silica gel (ABMBT.SG). ABMBT.SG was tested for the selective extraction of Hg(II) and it showed an exchange capacity of 41.4 mu mol g(-1). After preconcentration and separation using an ABMBT.SG column, trace Hg(II) in environmental samples can be determined by UV-VIS spectrophotometry. The chromatographic column packed with ABMBT.SG can be reused. The method is simple and efficient, and is applied to polluted soil (2 mu g g(-1)), incinerated biological material (9 or 18 ng g(-1)) and spiked natural water (5 mu g l(-1)). (C) 2000 Elsevier Science B.V. All rights reserved.
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