This paper presents the results of testing for residues of malachite green (MG) and its leucoform (LMG) in freshwater fish in the Czech Republic in the years 2012 – 2014 and a comparison with other EU states (results for 2012). A total of 260 samples of fish were tested. Thirty-two samples (12.31%) had a measurable concentration above the LOQ (the CC-alpha for MG and LMG is 0.3 μg·kg-1). Twelve samples (4.62%) failed to satisfy the minimum required performance limit of 2 μg·kg-1. Almost ninety-one percent of all of the samples in which a measurable concentration of MG/LMG was found were samples of fish from the Salmonid family (Salmonidae).
Malachite green in freshwater fish in the Czech Republic
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