惠州市瓜豆类蔬菜有机磷农药残留状况调查

2008年2～6月，采用速测法和气相色谱法对惠州市主要农贸市场上销售的瓜豆类蔬菜进行了有机磷农药残留检测。结果表明，惠州市区主要农贸市场上销售的11种瓜豆类蔬菜农药残留品种间差异较大，其中豇豆、四季豆、白萝卜的农药残留较严重，残留率分别为25．00％、30．00％、33．33％；黄瓜和茄子的农药残留较轻，残留率分别为13．33％、14．29％；但残留超标率较低，其中豇豆、四季豆残留超标率最高，均为3．70％，其次为白萝卜、黄瓜、茄子，残留超标率分别为2．47％、2．47％和1．23％；丝瓜、蒲瓜、小南瓜、苦瓜、番茄、马铃薯等未检出农药残留；主要残留农药有水胺硫磷、氧乐果、三唑磷，其次为甲胺磷、毒死蜱和磷胺。

Investigation on organophosphorus pesticide residue in fresh melon and legume vegetables in Huizhou

Samples of fresh melon and legume vegetables were collected from farm product markets in Huizhou City from Feb to Jun, 2008. Organophosphorus pesticide residues were detected in vegetables using methods of rapid tests and gas chromatography. The pesticide residue varied in different vegetables. The pesticide residue rates were found to be very high in cowpea, kidney pea and turnip, that were 25.0, 30.0 and 33.3%, respectively, and low in green cucumber and eggplant, 13.3 and 14.3%, respectively. The over-limit ratio of pesticide residues were generally low in the vegetable samples, and the hightest were found in cowpea, kidney pea and turnip （3.70%）, followed by turnip, green cucumber and eggplant （2.47, 2.47 and 1.23%, respectively）. The pesticide residues could not be detected in towel gourd, Lagenaria siceria, little pumpkin, balsam pear, tomato and potato. The main residue pesticides detected were isoearbophos, omethoate, triazophos followed by methamidoohos, ehlorpyrifos and ohosohamidon.