Research on detection method of pesticides residues of organic phosphorus and carbamate in vegetables and fruits
HAO Ning Physical and Chemical Laboratory,Handan Center for Disease Control and Prevention,Hebei,056008,China
[Objective]To establish a method for rapidly detecting 16 kinds of pesticides residues of organic phosphorus and carbamate in vegetables and fruits[Methods]The detection was conducted by applying gas chromatography with quartz capillary,by using nitrogen-phosphorus detector with high sensitivity and through extracting sample by acetonitrile and acetone.[Results]the linear ranges of organophosphorus pesticides were 5.0-1 000.0 μg/kg,r≥0.999 0.The lowest determination limit was 0.1-0.5 μg/kg,the recoveries were 66.0%-84.0%,and RSD was 4.8%-9.5% [Conclusion]This method can determine organic phosphorus and carbamate pesticides simultaneously in vegetables and fruits.It has the characteristics of high sensitivity,good separating effect,high recovery rate,small variance coefficient and low determination limit.
【CateGory Index】： R155.5