Risk estimate of pesticide residues in greenhouse grape

Objective To understand pesticide pollution in greenhouse grape and provide the basis for surveillance and control of greenhouse grape safety. Methods One hundred and sixty-nine samples of greenhouse grape were collected from the fruit production base in Cixi in 2008~2013. Twenty-three pesticide residues in greenhouse grape were investigated by GC. Results The sample detection rate and sample exceeding tolerance rate of 169 samples were 24.85% and 0.59% in recent 6 years. The time of pesticide residues found was mainly in July. Four kinds of chlorothalonil, cyhalothrin, cypermethrin and procymidone had the higher detection rate. Conclusion The safety indexes of all pesticides were lower than 1, and the safety was not a certain risk. The residues risk coefficients of 22 pesticides were all in low safety states except fenvalerate.