02125cas|a2200229 i 450000500170000000800410001703500150005810000190007324500780009226000520017030000110022249000270023350001030026050200570036352012000042065000290162070000330164970000450168270000440172781000590177185600650183020260817163621.0170399s1991    th  uzm rtt  00|  a1eng d  a.b100990741 aNagarur, Vidya10aAssessment of organophosphate residues in the vegetable production system  aBangkok :bAsian Institute of Technology,c1991  a123 p.1 aThesis ;vno. EV-91-17  aA thesis submitted in partial fulfillment of the requirements for the  degree of Master of Science  aThesis (M.Sc.) - Asian Institute of Technology, 1991  aThe main objective of the present study is to evaluate the presence of a  commonly used organophosphate insecticide, Mevinphos, in water, fish, mussel and  in chinese kale in a farm where this chemical is sprayed. The experiment was conducted in a farm at Pathum Thani where Mevinphos is  used. Samples of fish, mussel, water and chinese kale were collected and  analysed for the residues of the insecticide. The results indicate the presence of two insecticides Mevinphos and  Diazinon. In water, levels of the two chemicals are within their permissible  concentration. For mussel and fish, the Maxi mum Residue Limits (MRL) are not yet  set up, and so their residue limits are compared to their respective Acceptable  Daily Intake (ADI) and are found to exceed the ADI values. In case of chinese  kale, unwashed samples are found to contain less residues than the WHO/FAO MRL. The stem portions have higher levels than the leaves. It has been observed that  boiling reduces the levels in the vegetable to negligible quantities. A similar study is undertaken at a biological farm and the sets of results  are compared to that of the non biological  farm in Asian Institute of Technology  (AIT). 0aInsecticidesxToxicology1 aSchroder, Hans,eChairperson0 aSamorn Muttamara,eExamination Committee1 aWaibel, Hermann,eExamination Committee2 aAsian Institute of Technology.tThesis ;vno. EV-91-17  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B17408