TITLE

Use of 1,5-bis(di-2-pyridyl)methylene thiocarbohydrazide immobilized on silica gel for automated preconcentration and selective determination of antimony(III) by flow-injection electrothermal atomic absorption spectrometry

AUTHOR(S)
Ojeda, C. Bosch; Rojas, F. Sánchez; Pavón, J. M. Cano; Martín, L. Terrer
PUB. DATE
May 2005
SOURCE
Analytical & Bioanalytical Chemistry;May2005, Vol. 382 Issue 2, p513
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Selective sorption of Sb(III) on a microcolumn packed with 1,5-bis(di-2-pyridyl)methylene thiocarbohydrazide immobilized on silica gel (DPTH-gel) has been used for determination of Sb(III). A flow-injection system comprising a microcolumn connected to the tip of the autosampler was used for preconcentration. The sorbed antimony was eluted with nitric acid directly into the graphite furnace and determined by AAS. The detection limit for antimony under the optimum conditions was 0.3 ng mL−1. This procedure was used for determination of antimony in natural water, soil, vegetation, and a certified sample of a city waste incineration ash (BCR 176).
ACCESSION #
17252670

 

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