期刊
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
卷 382, 期 2, 页码 513-518出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-004-2691-1
关键词
antimony; electrothermal atomic absorption spectrometry; preconcentration; microcolumn; flow injection
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).
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