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Electrothermal atomic absorption spectrometric determination of silver in biological materials with a molybdenum tube atomizer

✍ Scribed by Kiyoshi Ohta; Satoshi Kaneco; Syn-ichi Itoh; Takayuki Mizuno

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 516 KB
Volume: 267
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(92)85014-w

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✦ Synopsis

Electrothermal

atomic absorption spectrometry (ETAAS) of sdver with a molybdenum tube atomizer was mvestlgated Hydrogen was added to the argon purge gas to protect the metal atomizer from oxldatlon by trace oxygen m the atomizer chamber The optimum gas flow-rates were argon 480 ml mu-' and hydrogen 20 ml mu-' The characterlstlc mass (the mass of the analyte gnmg a peak absorbance of 0 0044) of sdver usmg this atomizer was 5 4 fg, which IS better than that obtained with a graphite atomizer The Interferences caused by large amounts of mterferents were evaluated Ammomum thmcyanate as a chemical modlfler ehmmated the Interferences The amount of sdver determmed m blologrcal materials was m good agreement with the certlfled value

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