Preconcentration of Silver(I) with 2-Mercaptobenzothiazole Loaded Silica Gel
Open Access
- 25 February 1987
- journal article
- Published by Springer Nature in Analytical Sciences
- Vol. 3 (1), 45-48
- https://doi.org/10.2116/analsci.3.45
Abstract
A complexing material, 2-mercaptobenzothiazole loaded silica gel (MBT/SG), was prepared for rapid preconcentration of trace amounts of silver(l) from water samples. Silver(l) was quantitatively retained on the MBT/SG from solution of pH 0-6.3 in batch experiments, while the untreated silica gel captured only 5% of the element in the solution. The retention capacity of the loaded gel was about 8.8 mg Ag g-1 (81.5 pmol g-1) at pH 4.0. The mole ratio of MBT to silver was about 8.3. Stiver was quantitatively retained on the MBT/SG column at a high flow velocity (18.8 cm min-1). The silver retained on the column was completely eluted with 10-15 cm3 of 0.1 mol dm-3 nitric acid containing 2% thiourea, and directly determined by one-drop atomic absorption spectrometry. Silver contents of near-shore seawater were determined by the present method. © 1987, The Japan Society for Analytical Chemistry. All rights reservedKeywords
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