en Environmental Health, Sciences, and Engineering Environmental Health, Sciences, and Engineering پژوهشي Original Article <p><span style="font-size:14px;"><span style="font-family: times new roman;"><strong>Background:</strong> Dithiocarbamates, the main group of fungicides, are used to control about 400 pathogens in more than 70 crops. These pesticides are widely applied to crops including potato, cereal, apple, pear and leafy vegetables throughout the world since 1960. From the late 1980s, using these fungicides has caused much debate among regulators about their long-term effects on consumers and occupational users.<br> <strong>Method:</strong>&nbsp; In this study the residues of Dithiocarbamates in cucumber and tomato using the colorimetric method (Keppel method) was measured. Respectively 80 and 45 samples of greenhouse cucumber and tomato were collected from Zanjan vegetables center in autumns and winter 2013. The samples were analyzed in 4 treatments of: unwashed, washing with water, washing whit detergent and peeling.<br> <strong>Result:</strong> The results showed that the average concentration of Dithiocarbamates residues in unwashed greenhouse cucumber and tomatoes were 384.5 &micro;g/kg and 65 &micro;g/kg respectively. 35% and 5% of unwashed and water washed cucumber and tomato&nbsp;&nbsp; samples (respectively) had higher Dithiocarbamates residue than MRL recommended by Institute of Standards and Industrial Research of Iran (0.5mg/kg).<br> <strong>Conclusion:</strong> The treatments of washing and peeling had significant effect on the reduction of Dithiocarbamates residues in the all samples.</span></span></p> Dithiocarbamates, Ccucumber, Tomatoes, Colorimetric, CS2 99 104 http://jhehp.zums.ac.ir/browse.php?a_code=A-10-39-2&slc_lang=en&sid=1 Mohammad Reza Mehrasbi zmehr@zums.ac.ir 10031947532846009317 10031947532846009317 Yes Department of Environmental Health Engineering, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran. Rohangiz Moradjoo roohan77@yahoo.com 10031947532846009318 10031947532846009318 No Department of Environmental Health Engineering, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran. Mehran Mohseni mohsenim@zums.ac.ir 10031947532846009319 10031947532846009319 No Food and Drug Control Department School of Pharmacy, Zanjan University of Medical Sciences. Zanjan, Iran. Koorosh Kamali drkamali@zums.ac.ir 10031947532846009320 10031947532846009320 No Department of Statistic, School of Public Health, Zanjan University of Medical Sciences. Zanjan, Iran. Zohre Farahmankia 10031947532846009321 10031947532846009321 No School of Health ,Head of Chemistry Laboratory, Zanjan University of Medical Sciences. Zanjan, Iran. Jafar Taran zmehr@zums.ac.ir 10031947532846009322 10031947532846009322 No Department of Environmental Health Engineering, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran.