TAILIEUCHUNG - Evaluation of organochlorinated pesticide residue in the water of Ba Tri agricultural canal Ben Tre province

The residue of pesticides in water mainly depended on the crops season and have highest value in the beginning of growing period. The concentration of pesticides residues decreased from rice- field to canal and river. There were many forbidden pesticide such as HCH, Endosulfan, Heptachlor, Dieldrin etc. have been found with high frequency in water. It causes a big risk for human heath and aquatic biota. | Journal of Chemistry, Vol. 47 (5), P. 634 - 639, 2009 EVALUATION OF ORGANOCHLORINATED PESTICIDE RESIDUE IN THE WATER OF BA TRI AGRICULTURAL CANAL BEN TRE PROVINCE Received 6 April 2009 Nguyen Thi Dung, Nguyen Thi Kim Phuong Institute of Chemical Technology, VAST abstract The residues of Organochlorine pesticides from the water of the agricultural canal and river in Ba Tri district, BenTre province were determined by gas chromatography with electroncapture detector. The solid phase extraction (SPE- C18) cartridge was applied to extract organochlorine pesticides residues in water samples. The samples were collected during the dry, wet season and the crop growing 2006-2007. The results showed that most of water samples were contaminated with pesticide at concentration from to ppb. The residue of pesticides in water mainly depended on the crops season and have highest value in the beginning of growing period. The concentration of pesticides residues decreased from rice- field to canal and river. There were many forbidden pesticide such as HCH, Endosulfan, Heptachlor, Dieldrin etc. have been found with high frequency in water. It causes a big risk for human heath and aquatic biota. I - INTRODUCTION Ba Tri district of Ben Tre procince, Vietnam mainly rice growers, gain 50% rice yield of Ben Tre province, each year. With expectations in reducing crop losses, the farmers started using more and more pesticides. Organochlorine pesticides have been used extensively in agriculture and are very persistent in nature. Using too much pesticide in agriculture causes soil, water and food to become contaminated with pesticides. Therefore, as pesticides have become essential components of modern agricultural systems and they also have become public health issues. Very few studies that determine the levels of the organochlorine pesticide residues in water and their impact to aquatic biota conducted in Vietnam 634 The objective of the current study .

TỪ KHÓA LIÊN QUAN
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.