Development of a Flow Injection Manifold for Napropamide Determination by Photo-Induced Chemiluminescence
| Autor: | Mónica Catalá-Icardo, José Luis López-Paz, Víctor Asensio-Martín |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Clinical Biochemistry
Napropamide [Flow injection] Biochemistry Analytical Chemistry law.invention chemistry.chemical_compound Photoreaction law QUIMICA ANALITICA Electrochemistry Solid phase extraction Irradiation Sodium dodecyl sulfate Pesticides Spectroscopy Chemiluminescence Flow injection analysis Detection limit Chromatography Biochemistry (medical) Periodate Pesticide Chemiliminescence Flow injection: Napropamide chemistry |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| Popis: | A new, rapid, and simple method is proposed for the determination of the pesticide napropamide by photo-induced chemiluminescence detection coupled with a flow injection analysis (FIA) system. The emission was obtained by oxidation with periodate in basic medium, of the photoproducts generated on-line by UV irradiation (254 nm) of napropamide in acidic SDS (sodium dodecyl sulfate) medium. The flow method, in combination with the solid phase extraction (SPE) performed off-line with C-18 cartridges, allowed the determination of this pesticide over the 0.8-14.0 mu g L-1 range, with a limit of detection of 0.3 mu g L-1. The relative standard deviation (n = 9) at 2.5 mu g L-1 level was 4.3% for the combined FIA-SPE system. After testing the influence of several potential interfering compounds, including ions and other pesticides, the method was successfully applied to the determination of napropamide in spiked water samples with recoveries between 96-103%. This work was supported by the Ministry of Education and Science of Spain (Project CTM2006-11991) and FEDER funds. |
| Databáze: | OpenAIRE |
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