Analysis of thiocyanate content in feedstuff rapeseed meal by ultrasonic extraction and ion chromatography.

In the study, ultrasonic extraction pretreatment and ion chromatography were used to determine the thiocyanate content of rapeseed meal. Rapeseed meal samples were extracted by ultrasonic assisted extraction and analyzed by computer and quantified by external standard method. The results showed that the established analytical method could meet the relevant requirements of methodology. The thiocyanate content in the sample had a good linear relationship in the range of 0.1~5.0 mg/kg, the correlation coefficient R²>0.999, the recovery rate was 86.1%~102.4%, and the relative standard deviation was 0.226%. The experiment indicates that the method is suitable for the content analysis of thiocyanate in rapeseed meal. [ABSTRACT FROM AUTHOR]