Abstract: According to US Envioronmental Protection Agency(EPA) exposure assessment method,based on monitor data of chlorpyrifos residue in spinach exported to Japan and residue trials about chlorpyrifos residue in spinach and spinach consump-tion in Chinese diet,including P97.5 and average consumption data,Japanese vegetable consumption diet data,point exposure assessment based on extreme value theory on chlorpyrifos content in spinach exported from China to Japan was conducted.Results showed that the acute and chronic exposure % aPAD value and % cPAD value of chlorpyrifos residue in spinach from China are 16.2,and 0.4 respectivly,and the % cPAD of chlorpyrifos residue in vegetable from Japan is also 0.4,less than 100.These results proved that the population consuming the spinach exported to Japan is not the prior manage object,and the normal imported spinach from China is safe for consumption.

Key words: chlorpyrifos, spinach, exposure assessment