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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