New method for the determination of carbamate and pyrethroid insecticides in water samples using on-line SPE fused core column chromatography
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
25127636
DOI
10.1016/j.talanta.2014.06.037
PII: S0039-9140(14)00493-7
Knihovny.cz E-zdroje
- Klíčová slova
- Carbamates, Chromatography, Large volume sample injection, On-line solid phase extraction (on-line SPE), Pyrethroids, Surface water,
- MeSH
- chemické látky znečišťující vodu analýza MeSH
- chromatografie kapalinová MeSH
- extrakce na pevné fázi metody MeSH
- insekticidy analýza MeSH
- jezera MeSH
- karbamáty analýza MeSH
- monitorování životního prostředí metody MeSH
- on-line systémy MeSH
- organické látky analýza MeSH
- pyrethriny analýza MeSH
- řeky MeSH
- reprodukovatelnost výsledků MeSH
- spektrofotometrie ultrafialová MeSH
- voda chemie MeSH
- vysokoúčinná kapalinová chromatografie metody MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
- Názvy látek
- chemické látky znečišťující vodu MeSH
- insekticidy MeSH
- karbamáty MeSH
- organické látky MeSH
- pyrethriny MeSH
- voda MeSH
A new HPLC column-switching method using large volume sample injection and fused-core columns for on-line solid phase extraction have been developed for the determination of the following carbamates and pyrethroids: aldicarb, carbaryl, pirimicarb, carbofuran, kadethrin, flumethrin, fenpropathrin, fenoxycarb, tau-fluvalinate and fenvalerate, in surface water samples. Sudan I was used as internal standard. The proposed method was performed using 100 µl sample injection followed by an on-line solid phase extraction procedure and finally the compounds were identified and quantified by liquid chromatography with ultraviolet detection. The separation was carried out on C-18 reversed phase column based on fused-core particle technology. The influence of the injected sample volume, the variables affecting to SPE process and the conditions for the separation on an analytical column, were studied and optimized. The limits of detection ranged from 5.5 to 8.9 µg L(-1), and limits of quantification from 18.4 to 29.7 µg L(-1), while inter- and intra-day variability was under 15%. This new analytical procedure was satisfactorily applied for the determination of these organic pollutants in surface water samples located in Czech Republic. Concentration levels were found for some of these pollutants up to 26.11 µg L(-1) in the river Elbe and up to 34.53 µg L(-1) in the closed lakes samples.
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