Determination of fenthion in environmental water samples by dispersive liquid–liquid microextraction coupled with spectrofluorimetric and chemometrics methods
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 110
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شناسه ملی سند علمی:
JR_AMECJ-4-2_007
تاریخ نمایه سازی: 14 آذر 1402
چکیده مقاله:
In the present study, a simple, rapid and efficient dispersive liquid–
liquid microextraction (DLLME) coupled with spectrofluorimetry
(SFM) and chemometrics methods have been proposed for the
preconcentration and determination of fenthion in water samples.
Box–Behnken design was applied for multivariate optimization
of the extraction conditions (sample pH, the volume of dispersive
solvent and volume of extraction solvent). Analysis of variance
was performed to study the statistical significance of the variables,
their interactions and the model. Under the optimum conditions, the
calibration graph was linear in the range of ۵.۰–۱۱۰ ng mL-۱ with
the detection limit of ۱.۲۳ ng mL-۱ (۳Sb/m). Parallel factor analysis
(PARAFAC) and partial least square (PLS) modelling were applied
for the multivariate calibration of the spectrofluorimetric data. The
orthogonal signal correction (OSC) was applied for preprocessing of
data matrices and the prediction results of model, and the analysis
results were statistically compared. The accuracy of the methods,
evaluated by the root mean square error of prediction (RMSEP) for
fenthion by OSC-PARAFAC and OSC-PLS models were ۰.۳۷ and
۰.۷۸, respectively. The proposed procedure could be successfully
applied for the determination of fenthion in water samples.
کلیدواژه ها:
نویسندگان
Tahereh Eskandari
Department of Chemistry, Arak Branch, Islamic Azad University, Arak, Iran
Ali Niazi
Department of Chemistry, Central Tehran Branch, Islamic Azad University, Tehran. Iran
Mohammad Hossein Fatemi
Department of Analytical Chemistry, Faculty of Chemistry, Mazandaran University, Babolsar, Iran
Mohammad Javad Chaichi
Department of Analytical Chemistry, Faculty of Chemistry, Mazandaran University, Babolsar, Iran