Results
The level of OTA in the Proficiency Test sample was 7.2 ng/g, for a theoretical value of 9.6 ng/g and an acceptable range from 5.4 to 13.8 ng/g. The recovery and coefficient of variation results (Table 1) from the samples fortified with ochratoxin A at three different concentrations were above 70% and below 20%, revealing that the methodology used is in accordance with Law No. 401/2006 of 02/23/2006 of the Commission Regulation (CEC, 2006; Horwitz, Kamps, & Boyer, 1980).
ResultsThe level of OTA in the Proficiency Test sample was 7.2 ng/g, for a theoretical value of 9.6 ng/g and an acceptable range from 5.4 to 13.8 ng/g. The recovery and coefficient of variation results (Table 1) from the samples fortified with ochratoxin A at three different concentrations were above 70% and below 20%, revealing that the methodology used is in accordance with Law No. 401/2006 of 02/23/2006 of the Commission Regulation (CEC, 2006; Horwitz, Kamps, & Boyer, 1980).
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