Development of pressurized liquid extraction and cleanup procedures for determination of organochlorine pesticides in soils

The scope of this work is the development of a rapid, reliable and sensitive method for the analysis of organochlorine pesticides from soils by pressurized liquid extraction (PLE). The effect of four parameters (temperature, pressure, static time and cell volume) on the extraction efficiency was stu...

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Published inJournal of Chromatography A Vol. 1047; no. 1; pp. 147 - 155
Main Authors Concha-Graña, E., Turnes-Carou, M.I., Muniategui-Lorenzo, S., López-Mahía, P., Fernández-Fernández, E., Prada-Rodríguez, D.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 20.08.2004
Elsevier
Subjects
Analysis methods
Analytical chemistry
Animals
Applied sciences
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Extraction methods
Organochlorine compounds
Pesticides
Pesticides - analysis
Pollution
Pressure
Pressurized liquid extraction
Reproducibility of Results
Soil
Soil and sediments pollution
Soil Pollutants - analysis
Soil Pollutants - isolation & purification
Pressurized liquid extraction
Soil
Extraction methods
Organochlorine compounds
Pesticides
Chemical analysis
Solvent extraction
Soil pollution
Operating conditions
Soils
Pressure effect
Sample preparation
Extraction method
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Summary:The scope of this work is the development of a rapid, reliable and sensitive method for the analysis of organochlorine pesticides from soils by pressurized liquid extraction (PLE). The effect of four parameters (temperature, pressure, static time and cell volume) on the extraction efficiency was studied. The great extracting power of the PLE causes the extraction of numerous interfering substances, so a more efficient purification of this extract was necessary. In this work several sorbents have also been assayed to carry out the purification of soil samples: Florisil, silica, alumina, carbon, as well as combinations of them. Finally, the proposed analytical method was validated using a certified reference soil material (CRM804-050) and the results were compared with those obtained by other extraction techniques (Soxhlet and microwave-assisted extraction).
ISSN:0021-9673
DOI:10.1016/j.chroma.2004.06.114