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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 56, Number 5
JKCSEZ 56(5)
October 20, 2012 

Simultaneous Analysis of Pesticides in Aqueous Sample by HF-LPME

HF-LPME를 이용한 수용액 시료 내 농약의 동시 분석
Jang Woo Nam, Kang Jin Lee, Seung Woon Myung*

남장우, 이강진, 명승운*
Pesticides, HF-LPME, GC/MS
The HF (Hollow fiber) extraction method was optimized to analysis seven species of pesticides in aqueous sample and analyzing samples by GC/MS. Hollow fiber extraction showed good efficiency when it was conducted under these conditions: organic solvent was toluene and agitation speed was 1200 rpm. The 15% concentration of NaCl was optimized when it was experimented between 5% and 25%. The equilibrium time was determined at 15 minutes. The pH 5 showed the best effect on the extraction efficiency. The linearities of calibration curves of seven species were good with correlation of regression (r2) over 0.995 when they were experimented over a concentration range of 5 μg/L to 50 μg/L. The analytical data exhibited the detection of limits (LODs) range of 0.37 μg/L to 1.23 μg/L and the limit of quantification (LOQs) range of 1.19 μg/L to 3.91 μg/L. The optimized HF-LPME extraction method provides a simple and effective preparation and requires small amount of organic solvents and samples compared to conventional pre-treatment methods.
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