期刊
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
卷 382, 期 8, 页码 1877-1881出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-005-3333-y
关键词
continuum source; atomic-absorption spectrometry; sulfur determination; wine analysis
Determination of sulfur in wine is an important analytical task, particularly with regard to food safety legislation, wine trade, and oenology. Hitherto existing methods for sulfur determination all have specific drawbacks, for example high cost and time consumption, poor precision or selectivity, or matrix effects. In this paper a new method, with low running costs, is introduced for direct, reliable, rapid, and accurate determination of the total sulfur content of wine samples. The method is based on measurement of the molecular absorption of carbon monosulfide (CS) in an ordinary air-acetylene flame by using a high-resolution continuum-source atomic-absorption spectrometer including a novel high-intensity short-arc xenon lamp. First results for total sulfur concentrations in different wine samples were compared with data from comparative ICP-MS measurements. Very good agreement within a few percent was obtained.
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