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Multicomponent pesticides analysis by automated liquid phase microextraction
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2005, v.18 no.3, pp.224-231
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(2005). Multicomponent pesticides analysis by automated liquid phase microextraction. Analytical Science and Technology, 18(3), 224-231.
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Abstract
잔류농약 분석에 전통적으로 사용되는 액체-액체 추출법과 액체-고체 추출법의 여러 가지 단점을 극복하고 기존의 낮은 정밀도와 저조한 추출효과를 보완하기위해 자동화된 장치를 이용한 액체상 극미량 추출법(Liquid Phase Microextraction : LPME)을 사용하였으며 이에 대한 최적화 조건을 설정하였다. 대상농약은 demeton-S-methyl, diazinon, parathion, fenitrothion, EPN등 5종이었으며 채소 시료 중에서 추출하여 HP 6890 GC/NPD를 사용하여 분석하였다. 자동화된 LPME를 이용한 최적의 추출조건은 pH 3, 염의 농도 100 g/mL 이었으며 검량선을 작성하였을 때 0.2~10 g/g 범위에서 R2 = 0.9921 이상 직선상의 상관관계를 나타내었고 5 g/g 농도에서 demeton-S-methyl은 7.7%, diazinon은 9.8%, parathion은 7.8%, fenitrothion는 9.7%, EPN은 8.2%의 상대표준편차를 나타내었고 정확도는 demeton-S-methyl는 12.7%, diazinon는 7.8%, parathion는 10.4%, fenitrothion는 -6.7%, EPN은 -0.7%로 좋은 값을 나타내었다.
- keywords
- dynamic LPME, dementon-S-methyl, diazinon, parathion, fenitrothion, EPN
Reference
1
(1997) Solid Phase Microextraction Theory and Practice,
2
(1984) Anal Chem. Acta.,
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