Coordination polymer adsorbent for matrix solid-phase dispersion extraction of pesticides during analysis of dehydrated Hyptis pectinata medicinal plant by GC/MS.
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 μg 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 μg g(-1) and from 0.05 to 0.1 μg g(-1), respectively, for the different pesticides studied. The method developed was linear over the range tested (0.04-14.0 μg 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.
Universidade Federal de Sergipe, Departamento de Química, 49100-000 São Cristóvão, SE, Brazil.
Adriano
A
Aquino
Kaline A
KA
Wanderley
Carlos de Oliveira
Cde O
Paiva-Santos
Gilberto F
GF
de Sá
Marcelo da R
Mda R
Alexandre
Severino A
SA
Júnior
Sandro
S
Navickiene
D000327:Adsorption; D000814:Aniline Compounds / Q000032:analysis; D002623:Chemistry Techniques, Analytical; D002722:Chlorobenzenes / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D031331:Hyptis / Q000378:metabolism; D008689:Methacrylates / Q000032:analysis; D008855:Microscopy, Electron, Scanning / Q000379:methods; D010575:Pesticides / Q000032:analysis / Q000737:chemistry* / Q000494:pharmacology; D010648:Phenylacetates / Q000032:analysis; D010936:Plant Extracts; D010946:Plants, Medicinal / Q000378:metabolism; D011108:Polymers / Q000737:chemistry*; D011743:Pyrimidines / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000379:methods*; D000073739:Strobilurins; D014227:Triazines / Q000032:analysis; D014230:Triazoles / Q000032:analysis; D005466:Fluorocarbons
D000814:Aniline Compounds; D002722:Chlorobenzenes; D008689:Methacrylates; D010575:Pesticides; D010648:Phenylacetates; D010936:Plant Extracts; D011108:Polymers; D011743:Pyrimidines; D000073739:Strobilurins; D014227:Triazines; D014230:Triazoles; C469328:kresoxim-methyl; C100057:ametryne; C087114:tebuconazole; C108337:pyrimethanil; C016370:dichlofluanid; C524826:tetraconazole; D005466:Fluorocarbons