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Author | dc.contributor.author | Fuentes, Edwar | |
Author | dc.contributor.author | Cid, Camila | |
Author | dc.contributor.author | Báez, María E. | |
Admission date | dc.date.accessioned | 2018-12-20T15:04:38Z | |
Available date | dc.date.available | 2018-12-20T15:04:38Z | |
Publication date | dc.date.issued | 2015 | |
Cita de ítem | dc.identifier.citation | Talanta, Volumen 134, | |
Identifier | dc.identifier.issn | 00399140 | |
Identifier | dc.identifier.other | 10.1016/j.talanta.2014.11.017 | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/157571 | |
Abstract | dc.description.abstract | © 2014 Elsevier B.V. All rights reserved. This paper presents a new method for the determination of imidacloprid in water samples; one of the most widely used neonicotinoid pesticides in the farming industry. The method is based on the measurement of excitation-emission spectra of photo-induced fluorescence (PIF-EEMs) associated with second-order multivariate calibration with a parallel factor analysis (PARAFAC) and unfolded partial least squares coupled to residual bilinearization (U-PLS/RBL). The second order advantage permitted the determination of imidacloprid in the presence of potential interferences, which also shows photo-induced fluorescence (other pesticides and/or unexpected compounds of the real samples). The photoreaction was performed in 100-μl disposable micropipettes. As a preliminary step, solid phase extraction on C18 (SPE-C18) was applied to concentrate the analyte and diminish the limit of detection. The LOD was approximately 1 ng mL-1, which is suitable for detecti | |
Lenguage | dc.language.iso | en | |
Publisher | dc.publisher | Elsevier | |
Type of license | dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | |
Link to License | dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
Source | dc.source | Talanta | |
Keywords | dc.subject | Imidacloprid | |
Keywords | dc.subject | Multivariate calibration | |
Keywords | dc.subject | Photo-induced fluorescence | |
Keywords | dc.subject | Water | |
Título | dc.title | Determination of imidacloprid in water samples via photochemically induced fluorescence and second-order multivariate calibration | |
Document type | dc.type | Artículo de revista | |
Cataloguer | uchile.catalogador | SCOPUS | |
Indexation | uchile.index | Artículo de publicación SCOPUS | |
uchile.cosecha | uchile.cosecha | SI | |
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Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile