Simple and surprisingly effective one-step extraction-cleanup by Soxflo for DDT and its metabolites from environmental samples

Brown, R. H., Nelson, J. and Mueller-Harvey, I. (2004) Simple and surprisingly effective one-step extraction-cleanup by Soxflo for DDT and its metabolites from environmental samples. Journal of Chromatography A, 1061 (1). pp. 1-9. ISSN 0021-9673 doi: 10.1016/j.chroma.2004.10.106

Abstract/Summary

A pilot study found that DDT breakdown at the GC inlet was extensive in extracts from some-but not all-samples with high organic carbon contents. However, DDT losses could be prevented with a one-step extraction-cleanup in the Soxflo instrument with dichloromethane and charcoal. This dry-column procedure took 1 h at room temperature. It was tested on spiked soil and peat samples and validated with certified soil and sediment reference materials. Spike recoveries from freshly spiked samples ranged from 79 to 111% at 20-4000 mug/kg concentrations. Recoveries from the real-world CRMs were 99.7-100.2% of DDT, 89.7-90.4% of DDD and 89.6-107.9% of DDE. It was concluded that charcoal cleanups should be used routinely during surveys for environmental DDX pollution in order to mitigate against unpredictable matrix-enhanced breakdown in the GC. (C) 2004 Elsevier B.V. All rights reserved.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/8341
Item Type	Article
Refereed	Yes
Divisions	Life Sciences > School of Agriculture, Policy and Development Interdisciplinary centres and themes > Soil Research Centre
Uncontrolled Keywords	DDT, DDD, DDE, soil, sediment, peat, weathered samples, dichloromethane, extractiow, charcoal cleanup, DDT degradation, matrix interference, CRMs, ORGANOCHLORINE PESTICIDE-RESIDUES, SUPERCRITICAL-FLUID EXTRACTION, POLYCHLORINATED-BIPHENYLS, ORGANIC POLLUTANTS, SOIL, SEDIMENTS, SOXHLET, WATER, ELIMINATION, MATTER
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