Organophosphorus Pesticide Residues in Major Enviromental Components of Nakdong River

낙동강(洛東江) 주요(主要) 환경(環境) 구성분중(構成分中) 유기인계(有機燐系) 농약잔류분(農藥殘留分)

Waters, sediments and crucian carps samples collected bimonthly from Nakdong river during- the period of August 1982 to June 1983 were analyzed for organophosphorus pesticide residues by GLC equipped with a flame photometric detector. Among the environmental samples, IBP, diazinon, phenthoate, parathion, malathion and fenitrothion residues were found only in waters and crucian carps and sediments samples were devoid of the residues. In addition, seasonal variations of the residues in waters and crucian carps were observed. Waters and crucian carps samples collected in August, when pesticides are generally in great demand, contained all the organophosphorus pesticide residues while no organophosphorus were detected in waters and crucian carps samples collected in February, April or December. The most abundant residues in the two environmental samples were diazinon and IBP and residue levels of parathion, malathion and fenitrothion were found extremely low.

낙동강(洛東江) 류역중(流域中) 8개(個) 지점(地點)에서 1982년(年) 8월(月)부터 1983년(年) 6월(月)까지 2개월(個月) 간격으로 채취(菜取)한 수질(水質) 48점(點), 저이토(底泥土) 48점(點) 및 붕어 29점(點)에 대하여 유기린계(有機燐系) 기류농약(幾留農藥)을 FPD부착(附着) GLC로 분석(分析)한 결과(結果)를 요약(要約)하면 다음과 같다. 1) 수질(水質), 저이토(底泥土) 석시(析時) 원소황(元素黃)의 간사(干沙)은 copper powder 또는 raney nickel로 제거(除去)하였다. 2) 낙동강(洛東江) 환경시료(環境試料)중 수질(水質)과 붕어에서 유기린계(有機燐系) 잔유농약(殘留農藥)이 검출(檢出)되었으나 저니토(底泥土)에서는 검출(檢出)되지 않았다. 3) 농약(農藥) 성수기(盛需期)인 8월(月)에 채취(採取)한 수질(水質)과 붕어시료(試料)에서는 IBP, diazinon, phenthoate, parathion, malathion 및 fenitrothion 등(等) 6종(種)의 유기린계(有機燐系) 농약(農藥)이 검출(檢出)되었다. 4) 수질(水質) 및 붕어중(中) 유기린계(有機燐系) 농약(農藥)의 잔유량(殘留量)은 계절적(季節的) 변이(變異)가 인정되었으며, 수질(水質) 및 붕어중(中) diazinon과 IBP의 천유량(淺留量)이 가장 많았고, phenthoate, parathion, malathion 및 fenitrothion은 검출빈도(檢出頻度) 및 잔유수준(殘留水準)이 낮았다.