Validation of the Detection Methods of 18 Organochlorine Pesticide Residues in Edible Fungi
18 organicchlorine pesticide residues in edible fungi were analyzed and determined by gas chromatography using an improved QuEChERS method.The method was validated by standard curves,detection limit and quantification limi,blank addi-tion of edible fungi samples,determination of recovery rate,and precision calculation.The results showed that the standard curves of 18 organochlorine pesticides had good linearity,with a correlation coefficient R2 of 0.991 75-0.999 98,a recovery rate of 69.1％-91.5％,and a relative standard deviation(RSD)range of 0.7％-4.1％.Both the detection limit and quantification limit can meet the maximum limit detection requirements for organochlorine pesticide residues.
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