Determination of carbon monoxide in tuna by gas chromatography with micro-thermal conductivity detector
Cristian Bernardi1, Luca Maria Chiesa, Silvia Soncin
1Department of Veterinary Sciences and Technologies for Food Safety, University of Milan - Via Celoria 10 - 20133 Milan, Italy.
Abstract:
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 degrees 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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