Quantification of paraquat residue in selected food crops | |
| Author | Daisy Morknoy |
| Call Number | AIT Thesis no.EV-03-1 |
| Subject(s) | Paraquat Food crops |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science. Inter-University Program on Environmental Toxicology, Technology and Management. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-03-1 |
| Abstract | Seven varieties of food crops were selected for this study, namely sugarcane, com, chili, lettuce, chinese spinach, potato and garlic. The concentration of paraquat residue remained in these crops ranged from 0.16 mg/kg to 1.8 mg/kg. The highest concentration was found in crop number 7 and the lowest was found in crop number 2. Twenty soil samples were collected at Sukhothai, Phichit and Nakhonsawan provinces. The concentration of paraquat remained in soil were ND or Non Detected to 1.2 mg/kg. The highest concentration of paraquat was found from soil sample collected at a depth of 0-15 centimeters and the lowest or Non detected was also found in soil samples collected atl5-30 cm. The degradation of paraquat residue was also done in corn and chili. The degradation of paraquat in the corn grain was slow compared to degradation in vegetable as seen in chili samples. Spectrophometer equipped with UV detector was used to analyzed all the samples. The extraction procedures and chromatographic separation followed the standard procedure of Method No. lA. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-03-1 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Jutamaad Satayavivad |
| Examination Committee(s) | Preeda Parkpian ;Chongrak Polprasert |
| Scholarship Donor(s) | The Ministry of Science, Technology ;Environment Royal Thai Government |