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Title: Determination of carbamate pesticides using micro-solid-phase extraction combined with high-performance liquid chromatography
Authors: Basheer, C. 
Alnedhary, A.A.
Rao, B.S.M.
Lee, H.K. 
Keywords: Environmental analysis
Solid-phase extraction and membrane extraction
Issue Date: 9-Jan-2009
Citation: Basheer, C., Alnedhary, A.A., Rao, B.S.M., Lee, H.K. (2009-01-09). Determination of carbamate pesticides using micro-solid-phase extraction combined with high-performance liquid chromatography. Journal of Chromatography A 1216 (2) : 211-216. ScholarBank@NUS Repository.
Abstract: We describe a simple and sensitive porous polypropylene membrane-protected micro-solid-phase extraction (μ-SPE) approach for the sample preparation and determination of carbamate pesticides in soil samples by high-performance liquid chromatography. The μ-SPE device consisted of C18 sorbent held within a porous polypropylene envelope. In order to achieve optimum performance, several extraction parameters were optimized. Under the most favorable conditions, the extraction efficiency of the μ-SPE was very high, with detection limits in the range of 0.01-0.40 ng g-1. This is more than two orders of magnitude lower than the limits obtained by the United States Environmental Protection Agency Methods 8321A and 8318. A linear relationship was obtained for each analyte in the range of 2 and 200 ng g-1. The relative standard deviation for the analysis of aged soil samples spiked at 5 ng g-1 was ≤11%. The reproducibility of separate μ-SPE device used for experiments was satisfactory (relative standard deviations ranged from 4 to 11%), indicating that the method is reliable for routine environmental analysis. © 2008 Elsevier B.V. All rights reserved.
Source Title: Journal of Chromatography A
ISSN: 00219673
DOI: 10.1016/j.chroma.2008.11.042
Appears in Collections:Staff Publications

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