|
Published:Journal of Chromatographic Science,
ISSN 0021-9665 Volume
45, Number 7, August 2007, pp. 369-374
Pressurized Liquid Extraction of Organochlorine
Pesticides from Certified Solid Materials
E. Concha-Graña, V. Fernández-González,
M.I. Turnes-Carou, S. Muniategui-Lorenzo, P. López-Mahía,
and D. Prada-Rodríguez
Department of Analytical Chemistry, University of A Coruña,
Campus da Zapateria. E-15071 A Coruña, Spain
In order to propose a versatile method to use in
laboratories devoted to environmental analysis, a scheme for
the determination
of organochlorine pesticides from different solid matrices is
evaluated. Pressurized liquid extraction is chosen as the sample
preparation technique, followed by the purification of the extract
by means of solid-phase extraction with Envi-carb cartridge (100
m2/g). Finally, the extracts are analyzed by programmed
temperature vaporization (PTV)-gas chromatography
(GC)–electron-capture detection and PTV-GC–mass spectrometry.
The suitability of the method for the analysis of different matrices
is
determined by the extraction and analysis of four certified
reference materials of solid matrices: CRM 804-050 (soil), SRM
1941b (organics in marine sediment), SRM 1944 (New York/New
Jersey waterway sediment) and SRM 1649a (Urban Dust). Good
statistical concordance between the results obtained and the
certified or reference concentration are observed for most of
the
analyzed pesticides.
Reproduction
of editorial content of this journal is prohibited without publisher’s
permission.
This
article is available in its entirety by fax for $4.00 per
page.
Visa or MasterCard accepted. To
order electronically
click here
or call: 847-647-2900 ext. 1323
or fax request to: 847-647-1155.
Please
indicate JCS volume and issue along with
page numbers. |
Site Map: Home
| Current Issue | Subscribe
| Back Issues | About
Us | Meetings | Advertising
|
| Books for Sale | For
the Author | Links | Supplier
Info | Search | |
