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Alternative mercury-palladium chemical modifier for the determination of selenium in coal fly ash by graphite furnace atomic absorption spectrometry

✍ Scribed by C. García-Olalla; A.J. Aller

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 587 KB
Volume: 259
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(92)85379-k

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✦ Synopsis

An altematlve chenucal modlfier contammg HgCI,-PdC12 was used to develop an accurate method for the determmatlon of selemum m coal By ash Wall atomlzatlon and the Snutb-Hleftle background correctlon method were used The determmatlon was done either by the standard addltlons method or by usmg a cahbratlon graph obtamed for selenium m matnx-free solutions Hnth the modifier A detectlon limit of 7 45 pg I-' and an optimum concentration range of up to 120 pg 1-l were obtamed

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