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Title: Combination of microwave assisted micellar extraction and liquid chromatography for the determination of organophosphorous pesticides in soil samples
Authors: Padrón-Sanz, C.
Halko, R.
Sosa-Ferrera, Z. 
Santana-Rodríguez, J. J. 
UNESCO Clasification: 2391 Química ambiental
2301 química analítica
Keywords: Organophosphorous pesticides
Microwave assisted micellar extraction
Issue Date: 2005
Publisher: 0021-9673
Journal: Journal of Chromatography A 
Abstract: A new methodology based on the microwave assisted micellar extraction (MAME) technique has been optimised, using soil samples, to extract and determine a mixture of the eight organophosphorous pesticides mainly used in agriculture. The pesticides under study have been extracted using the non-ionic surfactants polyoxyethylene 10 lauryl ether (POLE) and oligoethylene glycol monoalkyl ether (Genapol X-080). The optimal extraction variables, such as surfactant concentration, pH, radiation time and microwave power were determined for each surfactant. The results show the advantage of using POLE instead of Genapol X-080 for the extraction of the organophosphorus pesticides with recoveries higher than 70% for most of the compounds and relative standard deviations (RSD) below 2.6%. This method was successfully applied to fresh samples as well as to aged samples for the analysis of soils with different characteristics and compared with the traditional Soxhlet technique.
ISSN: 0021-9673
DOI: 10.1016/j.chroma.2005.05.005
Source: Journal of Chromatography A [ISSN 0021-9673], v. 1078, p. 13-21
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