| organophosphorus pesticide residues in vegetables from farms, markets, and a supermarket around kwan phayao lake of northern thailand. | this study investigated organophosphorus (op) residues in vegetables from 27 farms, 106 markets, and 1 supermarket around kwan phayao lake, northern thailand, between august and september 2013. types of vegetables sampled were all vegetables cultivated or sold around the study site. the most common op pesticides detected in farm samples were chlorpyrifos (50 %), malathion (31.8 %), monocrotophos (31.8 %), diazinon (13.6 %), omethoate (13.6 %), and dicrotophos (9.1 %). the most common op pesticid ... | 2014 | 24609615 |