Screening of pesticide-contaminated soil by Supercritical Fluid Extraction (SFE) and High-Performance Thin-Layer Chromatography with Automated Multiple Development (HPTLC/AMD)

R. Koeber; R. Niessner

doi:10.1007/s0021663540464

Screening of pesticide-contaminated soil by Supercritical Fluid Extraction (SFE) and High-Performance Thin-Layer Chromatography with Automated Multiple Development (HPTLC/AMD)

R. Koeber, R. Niessner

Natural Sciences

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

A method for screening of pesticide-contaminated soil was developed. The extraction is carried out by supercritical carbon dioxide (CO₂) with methanol as a modifier. The different components of the extracts are separated by high-performance thin-layer chromatography with automated multiple development (HPTLC/AMD) and evaluated densitometrically. The technique can be carried out without any previous clean-up step. Compared with other extraction techniques, SFE has the advantages of reducing the amount of co-extracted soil contents, which can seriously deteriorate the results. A 35-step development of the TLC-plate with gradient elution offers an application over a wide range of polarity. Migration data for 107 pesticides, recoveries and detection limits for 20 pesticides were determined.

Original language	English
Pages (from-to)	464-469
Number of pages	6
Journal	Fresenius' Journal of Analytical Chemistry
Volume	354
Issue number	4
DOIs	https://doi.org/10.1007/s0021663540464
State	Published - 2 Feb 1996

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Screening of pesticide-contaminated soil by Supercritical Fluid Extraction (SFE) and High-Performance Thin-Layer Chromatography with Automated Multiple Development (HPTLC/AMD)

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