A new selective liquid membrane extraction method for the determination of basic herbicides in agro-processed fruit juices and Ethiopian honey wine (Tej) samples.
Identifieur interne : 001419 ( Main/Exploration ); précédent : 001418; suivant : 001420A new selective liquid membrane extraction method for the determination of basic herbicides in agro-processed fruit juices and Ethiopian honey wine (Tej) samples.
Auteurs : Negussie Megersa [Éthiopie] ; Samuel KassahunSource :
- Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment [ 1944-0057 ] ; 2012.
Descripteurs français
- Wicri :
- geographic : Éthiopie.
English descriptors
- KwdEn :
- Ananas (chemistry), Atrazine (analysis), Beverages (analysis), Chromatography, High Pressure Liquid, Citrus sinensis (chemistry), Diet (ethnology), Ethiopia, Food Contamination, Food Inspection (methods), Fruit (chemistry), Herbicides (analysis), Honey (analysis), Limit of Detection, Malus (chemistry), Pesticides (analysis), Reproducibility of Results, Triazines (analysis), Wine (analysis).
- MESH :
- chemical , analysis : Atrazine, Herbicides, Pesticides, Triazines.
- geographic : Ethiopia.
- analysis : Beverages, Honey, Wine.
- chemistry : Ananas, Citrus sinensis, Fruit, Malus.
- ethnology : Diet.
- methods : Food Inspection.
- Chromatography, High Pressure Liquid, Food Contamination, Limit of Detection, Reproducibility of Results.
Abstract
Supported liquid membrane (SLM) extraction was optimised for trace extraction and enrichment of selected triazine herbicides from a variety of agro-processed fruit juices and Ethiopian honey wine (Tej) samples. In the extraction process, a 1:1 mixture of n-undecane and di-n-hexylether was immobilised in a thin porous PTFE membrane that forms a barrier between two aqueous phases (the donor and acceptor phases) in a flow system. The extracts constitute the selectively enriched analytes collected from the acceptor phase and were analysed by transferring to a HPLC-UV system using a diode array detector at 235 nm. High enrichment factors were obtained with very good repeatability of results, and the detection limit was lower than 3.00 µg l⁻¹ for ametryn in apple juice. The optimised method showed very good linearity of over 50-500 µg l⁻¹ with a correlation coefficient of >0.990 or better for triplicate analysis. All chromatograms gave well resolved peaks with no interfering peaks at the retention times of the selected triazines, showing high selectivity of the SLM extraction method in combination with HPLC-UV for the selected matrices. The optimised method can be used as an alternative solventless extraction method for microgram-level extraction of other triazine herbicides and a variety of pesticides from liquid and semi-liquid environmental, biological and food matrices.
DOI: 10.1080/19440049.2011.653792
PubMed: 22324905
Affiliations:
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Le document en format XML
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Box 1176, Addis Ababa</wicri:regionArea><wicri:noRegion>Addis Ababa</wicri:noRegion></affiliation></author><author><name sortKey="Kassahun, Samuel" sort="Kassahun, Samuel" uniqKey="Kassahun S" first="Samuel" last="Kassahun">Samuel Kassahun</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2012">2012</date><idno type="RBID">pubmed:22324905</idno><idno type="pmid">22324905</idno><idno type="doi">10.1080/19440049.2011.653792</idno><idno type="wicri:Area/PubMed/Corpus">000659</idno><idno type="wicri:Area/PubMed/Curation">000659</idno><idno type="wicri:Area/PubMed/Checkpoint">000659</idno><idno type="wicri:Area/Ncbi/Merge">000F10</idno><idno type="wicri:Area/Ncbi/Curation">000F10</idno><idno type="wicri:Area/Ncbi/Checkpoint">000F10</idno><idno type="wicri:Area/Main/Merge">001434</idno><idno type="wicri:Area/Main/Curation">001419</idno><idno type="wicri:Area/Main/Exploration">001419</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">A new selective liquid membrane extraction method for the determination of basic herbicides in agro-processed fruit juices and Ethiopian honey wine (Tej) samples.</title><author><name sortKey="Megersa, Negussie" sort="Megersa, Negussie" uniqKey="Megersa N" first="Negussie" last="Megersa">Negussie Megersa</name><affiliation wicri:level="1"><nlm:affiliation>Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia. megersane@yahoo.com</nlm:affiliation><country xml:lang="fr">Éthiopie</country><wicri:regionArea>Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa</wicri:regionArea><wicri:noRegion>Addis Ababa</wicri:noRegion></affiliation></author><author><name sortKey="Kassahun, Samuel" sort="Kassahun, Samuel" uniqKey="Kassahun S" first="Samuel" last="Kassahun">Samuel Kassahun</name></author></analytic><series><title level="j">Food additives & contaminants. 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In the extraction process, a 1:1 mixture of n-undecane and di-n-hexylether was immobilised in a thin porous PTFE membrane that forms a barrier between two aqueous phases (the donor and acceptor phases) in a flow system. The extracts constitute the selectively enriched analytes collected from the acceptor phase and were analysed by transferring to a HPLC-UV system using a diode array detector at 235 nm. High enrichment factors were obtained with very good repeatability of results, and the detection limit was lower than 3.00 µg l⁻¹ for ametryn in apple juice. The optimised method showed very good linearity of over 50-500 µg l⁻¹ with a correlation coefficient of >0.990 or better for triplicate analysis. All chromatograms gave well resolved peaks with no interfering peaks at the retention times of the selected triazines, showing high selectivity of the SLM extraction method in combination with HPLC-UV for the selected matrices. The optimised method can be used as an alternative solventless extraction method for microgram-level extraction of other triazine herbicides and a variety of pesticides from liquid and semi-liquid environmental, biological and food matrices.</div></front></TEI><affiliations><list><country><li>Éthiopie</li></country></list><tree><noCountry><name sortKey="Kassahun, Samuel" sort="Kassahun, Samuel" uniqKey="Kassahun S" first="Samuel" last="Kassahun">Samuel Kassahun</name></noCountry><country name="Éthiopie"><noRegion><name sortKey="Megersa, Negussie" sort="Megersa, Negussie" uniqKey="Megersa N" first="Negussie" last="Megersa">Negussie Megersa</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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