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- W2064080553 abstract "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 detecting imidacloprid in water according to the guidelines established in North America and Europe. The PIF-EEMs coupled to PARAFAC or U-PLS/RBL was successfully applied for the determination of imidacloprid in different real water samples, with an average recovery of 101±10%." @default.
- W2064080553 created "2016-06-24" @default.
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- W2064080553 date "2015-03-01" @default.
- W2064080553 modified "2023-09-23" @default.
- W2064080553 title "Determination of imidacloprid in water samples via photochemically induced fluorescence and second-order multivariate calibration" @default.
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- W2064080553 doi "https://doi.org/10.1016/j.talanta.2014.11.017" @default.
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