Assessment of organophosphate and carbamate insecticides and heavy metal contamination in canal-grown water morning glory (ipomoea aquatica forssk) in nakhon nayok province, thailand
Sirikul Thummajitsakul, Noramon Thongkerd, Banthitar Pholmeesap, Piyaporn Phankham, Kun Silprasit
Excessive application of insecticides in agriculture has become an increasing trend in Thailand,
where agriculture is common in the area. This problem leads to negative impacts on human health
and environment. Therefore, this study focused on monitoring organophosphate and carbamate
insecticides, and heavy metals (Cd, Cu, Pb, Ni, Hg, Zn and Mn) in Ipomoea aquatica Forssk, as well
as water and soil fromdifferent canals in Ongkharak District, Nakhon Nayok Province,Thailand. The
powder samples were prepared from roots, stems and leaves of Ipomoea aquatica Forssk, as well
as soil. Then, anti-acetylcholinesterase activity of each sample was determined, and heavy metal
contents were measured by atomic absorption spectrometry. The results showed that the highest antiacetylcholinesterase activity was found in the soil samples, followed by those of leaves and stems,
roots, and water, respectively. Etc...
Keywords
Organophosphate and carbamate insecticides; Anti-acetylcholinesterase activity; Heavy metals; Bioaccumulation; Ipomoea aquatica Forssk