Background and purpose: Pesticides are used to control pests in agricultural crops. According to the integrity and permeability status of surface skin of strawberry, pesticides can penetrate and precipitate in the fruit. Thus, the study was performed to assess the level of Organophosphorus pesticide residues together in strawberry produced in Mazandaran province. Material and methods: In this study, 211 strawberry samples were collected in the different cities of Mazandaran province during spring 2012, and the residual levels of malation, diazinon, dursban and etion were analyzed using QUECHERS and GC-MS. The data were analyzed by One-way ANOVA statistical analysis. P< 0.05 was comprehended as significant. Results: The results showed that the mean residual contents of malation, diazinon, dursban and etion were 4.58±2.8 ppb, 37.2±6.8 ppb, 6.07±1.78 ppb and 2.67±1.74 ppb, respectively. Despite the malation and etion, the mean concentrations of diazinon and dursban in strawberry samples were lower than that of Iran standard level. Conclusion: As a result, regarding to the use of large amount of unaccepted pesticides, permanent control of pesticide residues in agricultural products such as strawberry, seems to be necessary.

Keywords: Organophosphorus pesticide residues (malation, diazinon, dursban and etion), strawberry

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