The Investigation of Organophosphate and Carbamate Pesticide Residues Found in the Period 2022-2024 on Popular Vegetables in Bangkan County, Bangkok, Thailand

บทคัดย่อ

The experiment on organophosphate and carbamate has been conducted since 2022, therefore the yearly experiment has been done to observe the situation of pesticide residue in vegetables. Vegetables around Thailand have been used the organophosphate and carbamate as pesticides. Organophosphate and carbamate are inhibitors of acetylcholinesterase, an enzyme critical to the control of nerve impulse transmission from one cell to another. The LD₅₀
of organophosphate and carbamate is 5 – 500 mg/kg. This investigation was performed on 10 kinds of vegetables found mostly in markets such as parsley, Chinese kale, cabbage, Chinese cabbage, water morning glory, carrot, lettuce, cowpea, tomato, and cucumber which were purchased in 2022, 2023 and 2024. They all were tested using the GT-Test Kit. The study found the combination of organophosphate and carbamate in morning glory was still over the maximum residue limits (MRLs) issued by the Thai Food and Drug Administration, issue number 288 (year 2005).