Published:Journal of Chromatographic Science,
ISSN 0021-9665 Volume
46, Number 5, May/June 2008, pp. 392-394
Determination of Carbon Monoxide in Tuna by Gas
Chromatography with Micro-Thermal Conductivity Detector
Cristian Bernardi, Luca Maria Chiesa, Silvia
Soncin, Elena Passerò, and Pier Antonio Biondi
Department of Veterinary Sciences and Technologies for Food Safety,
University of Milan — Via Celoria 10 — 20133 Milan,
Italy
The suitability of a portable gas chromatograph
equipped with a micro-thermal conductivity detector for the head-space
determination of carbon monoxide (CO) in tuna samples is evaluated;
CO is estimated after its liberation from tissue by acidic treatment
at 70°C. Using the tested technique, the CO contents in untreated
and suspected treated samples are analyzed. A limit of detection
of approximately 13 ng/g is reached. The results demonstrate
that this apparatus has performances similar to more expensive
and sophisticated instruments.
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