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초록

The matrix effect of 235 pesticides in seven agricultural products of green pepper, mandarin orange, potato, perilla leaf, coriander, crown daisy, and chamnamul on simultaneous analysis of agricultural pesticide residues using GC/MS/MS were confirmed. D-sorbitol, as an analyte protectant(AP), was added in the final testing solution to reduce the matrix effect and to improve the reliability of the quantitative analysis. As D-sorbitol was added, the matrix effect %(%ME) of pesticides were decreased to about 1/10 in mandarin orange, about 1/3 in perilla leaf, coriander, green pepper, potato and chamnamul(Pimpinella brachycarpa). In addition, the repeatability and the linearity of calibration curves were increased with the addition of D-sorbitol. In most pesticides, the relative standard deviation %(%RSD, n = 3) of calibration curves were less than 10%, and the R2 value were more than 0.99.