Coordination polymer adsorbent for matrix solid-phase dispersion extraction of pesticides during analysis of dehydrated Hyptis pectinata medicinal plant by GC/MS
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Data
2010-12-15
Autores
Aquino, Adriano
Wanderley, Kaline A.
Paiva-Santos, Carlos de Oliveira [UNESP]
de Sa, Gilberto F.
Alexandre, Marcelo da R.
Junior, Severino A.
Navickiene, Sandro
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
The coordination polymer [Zn(BDC)(H(2)O)(2)](n) was tested for extraction of pyrimethanil, ametryn, dichlofluanid, tetraconazole, flumetralin, kresoxim-methyl and tebuconazole from the medicinal plant Hyptis pectinata, with analysis using gas chromatography-mass spectrometry in selected ion monitoring mode (GC/MS, SIM). Experiments carried out at different fortification levels (0.1, 0.5 and 1.0 mu g g(-1)) resulted in recoveries in the range 73-97%, and RSD values were between 5 and 12% for the [Zn(BDC)(H(2)O)(2)](n) sorbent. Detection and quantification limits ranged from 0.02 to 0.07 mu g g(-1) and from 0.05 to 0.1 mu g g(-1), respectively, for the different pesticides studied. The method developed was linear over the range tested (0.04-14.0 mu g g(-1)), with correlation coefficients ranging from 0.9987 to 0.9998. Comparison between [Zn(BDC)(H(2)O)(2)](n) and the commercial phase C(18)-bonded silica showed good performance of the [Zn(BDC)(H(2)O)(2)](n) polymeric sorbent for the pesticides tested. (C) 2010 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
Coordination polymer, GC/MS, Matrix solid-phase dispersion, Medicinal plant, Pesticides
Como citar
Talanta. Amsterdam: Elsevier B.V., v. 83, n. 2, p. 631-636, 2010.