SOLID-PHASE EXTRACTION AND DETERMINATION OF ULTRA-TRACE AMOUNTS OF MERCURY(II) USING OCTADECYL SILICA MEMBRANE DISKS MODIFIED BY HEXATHIA-18-CROWN-6-TETRAONE AND COLD VAPOR ATOMIC-ABSORPTION SPECTROMETRY

Authors
YAMINI Y ALIZADEH N SHAMSIPUR M
Citation
Y. Yamini et al., SOLID-PHASE EXTRACTION AND DETERMINATION OF ULTRA-TRACE AMOUNTS OF MERCURY(II) USING OCTADECYL SILICA MEMBRANE DISKS MODIFIED BY HEXATHIA-18-CROWN-6-TETRAONE AND COLD VAPOR ATOMIC-ABSORPTION SPECTROMETRY, Analytica chimica acta, 355(1), 1997, pp. 69-74
Citations number
28
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
355
Issue
1
Year of publication
1997
Pages
69 - 74
Database
ISI
SICI code
0003-2670(1997)355:1<69:SEADOU>2.0.ZU;2-2
Abstract
A simple method for rapid extraction and determination of ultra trace amounts of mercury(II) ions using octadecyl-bonded silica membrane dis ks modified with hexathia-18-crown-6-tetraone and cold vapour atomic a bsorption spectrometry (CVAAS) is presented. Extraction efficiency and the influence of flow rates, pH, and type and smallest amount of stri pping acid were evaluated, Maximum capacity of the membrane disks modi fied by 10 mg of the crown ether was found to be 241 mu g Hg2+ ions. T he limit of detection of the proposed method is 6 ng per 1000 mi. The method was applied to the recovery of Hg2+ ions from synthetic samples and four different water samples. (C) 1997 Elsevier Science B.V.