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Ractopamine is used as an animal feed additive, but its adverse effects led to the necessity of the current monitoring programs of ractopamine residues in food products, so its reliable… Click to show full abstract
Ractopamine is used as an animal feed additive, but its adverse effects led to the necessity of the current monitoring programs of ractopamine residues in food products, so its reliable quantification is indispensable. This work aims to demonstrate the stability of solutions of ractopamine used for calibration of a liquid chromatography–tandem mass spectrometry method. Naturally contaminated samples with ractopamine were quantified using solutions prepared on different days. The stability study was based on an empirical model that considered a straight line (slope = 1) to describe the degradation mechanism. No significant change in the slope was detected. It could be concluded that solutions underpinning calibration curves at two different working intervals were stable for at least 11 months and 5 months, respectively.
Journal Title: Accreditation and Quality Assurance
Year Published: 2017
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