Environmental Analysis Health and Toxicology

환경독성보건학회 (The Korean Society of Environmental Health and Toxicology)
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효소 저해법을 이용한 유기인계 및 Carbamate계 농약의 다성분 잔류 검출

Detection for Multiresidue of the Organophosphorus and Carbamate Pesticides by Enzyme-Inhibition Method

  • 발행 : 2002.09.01
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초록

Enzyme-Inhibition방법으로 다성분 잔류 농약의 검출 기법을 개발하기 위해, 음용수 허용기준 설정 농약인 유기인계 농약으로 malathion, parathion, diazinon과 carbamate농약으로 carbary에 대한 acetylcholinesterase (AChE)과 cholinesterase (ChE) 활성저해 관계를 규명하였다. 병아리 뇌의 AChE와 ChE 활성도는 각각 166.6 및 5.8$\mu$mol/min/g protein이었고, 혈장에서는 각각 23.1$\mu$mol/min/g protein과 8.3 $\mu$mol/min/g protein 이었다. AChE와 ChE의 최적 PH는 각각 8.2및 7.8 이었다. Km은 0.034 및 0.045 mM 이었다. 유기인계농약에서 AChE와 ChE의 I$_{50}$ 값의 malathion이 55.82 및 99.42mg/L이었고, Parathion은 31.16및 29.13mg/L이었고, diazinon은 17.89 및 19.62 mg/L 이었다. Carbamate농약인 carbaryl의 AChE와 ChE의 I$_{50}$ 값의 0.10및 0.05mg/L이었다. 먹는 물 관리법에 의한 carbaryl의 먹는 물 허용 수질기준인 0.07mg /L을 AChE와 ChE의 I$_{50}$에서 검출할 수 있다. AChE및 ChE을 이용한 enzyme-inhibition(EI)법은 carbamate농약인 carbaryl을 먹는 물 허용 수질기준인 0.07mg/L가지 검출 할 수 있으므로, 다성분 잔류분석법 (MRM, Multiresidue Method)으로 이용할 수 있다. 따라서 Enzyme lnhibition방법을 이용하여 자연환경 중 carbamate계 농약을 쉽고 빠르게 검출할 수 있는 새로운 bioassay법으로 응용할 수 있다. 수 있다.

This study was carried out with the detection for multiresidue of the organophosphorus pesticides such as malathion, parathion. diazinon, and carbamate pesticide such as carbaryl, by enzyme-inhibition method. The acetylcholinesterase (AChE) and cholinesterase (ChE) activities in chicken brain determined by the Ellman's method were 166.6 and 5.8 $\mu$mol/min/g protein, and in chicken plasma were 23.1 and 8.3 $\mu$mol/min/g protein, respectively. The optimum pH of AChE and ChE was 8.2 and 7.8, respectively. The Km of AChE and ChE was 0.034 and 0.045 mM, respectively. I$\_$50/ for AChE and ChE by some organophosphorus was 55.82 and 99.42 mg/L of malathion, 31.16 and 29.13 mg/L of parathion, and 17.89 and 19.62 mg/L of diazinon, respectively. I$\_$50/ for AChE and ChE by carbaryl of carbamate was 0.10 and 0.05 mg/L, respectively. The 0.07 mg/L of drinking water advisory level for carbaryl could be detected with I$\_$50/ of AChE and ChE. Enzyme-Inhibition (EI) method with AChE and ChE was used the multiresidue method to detect the 1 mg/L of the carbamate pesticides.

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