Residual Levels of Diazinon and Benomyl on Greenhouse Mushrooms

Background: Pesticides are one of the important sources of environmental pollution that influence human health. The aim of current study was to determine diazinon and benomyl residues levels in mushrooms grown in greenhouses. Methods: Mushroom samples were obtained from 10 active greenhouses of Hamadan Province, Iran, every 14 days from May 2014. The absorbance of diazinon and benomyl were measured at 435nm in a Chemistry laboratory in Hamadan Branch, Islamic Azad University by spectrophotometer. Data were analyzed by one-way ANOVA and one-sample test in SPSS 20 statistical package. Results: Diazinon residue levels in mushroom ranged from 0.026 to 0.185mg/kg. Approximately 90.0% of mushrooms were contaminated with diazinon, which was significantly more than MRL for human consumption provided by European Union (0.05mg/kg). Benomyl residue levels ranged from 0.00025 to 0.097mg/kg. Approximately 50.0% of mushrooms were contaminated with benomyl, which was significantly higher than the MRL for human consumption provided by WHO (0.01mg/kg). Conclusion: Mushrooms of Hamedan Province, Iran, Greenhouses contamination with diazinon and benomyl is higher than international standards.