Development and validation of a novel method for the analysis of chlorinated pesticides in soils using microwave-assisted extraction-headspace solid phase microextraction and gas chromatography-tandem mass spectrometry

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Herbert, P (Author) Other; Morais, S (Author) Other; Paiga, P (Author) Other; Alves, A (Author) FEUP; Santos, L (Author) FEUP

Journal

Title: Analytical and Bioanalytical Chemistry

Vol. 384

Pages: 810-816

ISSN: 1618-2642

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 29 Citations

ISI Web of Science

Scopus - 36 Citations

Scientific classification

CORDIS: Technological sciences

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-004-NAW

DOI: 10.1007/s00216-005-0211-6

Resumo (PT): Analytical and Bioanalytical Chemistry

Abstract (EN): A new procedure for determining eleven organochlorine pesticides in soils using microwave-assisted extraction (MAE) and headspace solid phase microextraction (HS-SPME) is described. The studied pesticides consisted of mirex, alpha- and gamma-chlordane, p,p'-DDT, heptachlor, heptachlor epoxide isomer A, gamma-hexachlorocyclohexane, dieldrin, endrin, aldrine and hexachlorobenzene. The HS-SPME was optimized for the most important parameters such as extraction time, sample volume and temperature. The present analytical procedure requires a reduced volume of organic solvents and avoids the need for extract clean-up steps. For optimized conditions the limits of detection for the method ranged from 0.02 to 3.6 ng/g, intermediate precision ranged from 14 to 36% (as CV%), and the recovery from 8 up to 51%. The proposed methodology can be used in the rapid screening of soil for the presence of the selected pesticides, and was applied to landfill soil samples.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7