Abamectin belongs to the family of abamectins which are macrocyclic lactones produced by the actinomycete Streptomyces avemitilis 1,2 . It is a mixture of two components abamectin B1a and B1b, the former is the major component (about 80 %), while abamectin B1b is the minor one (about 20 %). Abamectin acts on insects by interfering with neural and neuromuscular transmission with the widely using 3 . For example, abamectin is used to control insect and mite pests of a range of agronomic, fruit,

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... getable and ornamental crops. Abamectin is listed as highly toxic compounds according to the criterion of the World Health Organization (WHO), so the standard of maximum residue level (MRL) about abamectin in vegetables and fruits is very strict all over the world 4 . Nowadays, people usually pay more attention to the safety and pesticide residues in agricultural products all over the world 5-7 . The pesticide residues resulting from extensive use of abamectin in agricultural production must be dangerous to consumers. Especially it is used on peaches and its influence is more dangerous because these fruits are often used as the ingredients for baby foods, so that it is important to have a suitable method for the determination of low levels of abamectin. There are many kinds of analysis methods about the pesticide residue detection, e.g., gas chromatography 8 , gas or liquid chromatography-mass spectrometry 9,10 and biochemical assay 11,12 , etc. In this study, we investigate the possibility of