Three Different Spectrophotometric Methods for Simultaneous Determination of Pyriproxyfen and Chlorothalonil Residues in Cucumber and Cabbage Samples
Joint Authors
Omer, Shilan A.
Fakhre, Nabil A.
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-08-20
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
In this study, three simple and accurate spectrophotometric methods for simultaneous determination of pyriproxyfen and chlorothalonil residues in cucumbers and cabbages grown in experimental greenhouse were studied.
The first method was based on the zero-crossing technique measurement for first and second derivative spectrophotometry.
The second method was based on the first derivative of the ratio spectra.
However, the third method was based on mean centering of ratio spectra.
These procedures lack any previous separation steps.
The calibration curves for three spectrophotometric methods are linear in the concentration range of 1–30 μg·mL−1 and 0.5–7 μg·mL−1 for pyriproxyfen and chlorothalonil successively.
The recoveries ranged from 82.12–97.40% for pyriproxyfen and 81.51–97.04% for chlorothalonil with relative standard deviations less than 4.95% and 5.45% in all instances for pyriproxyfen and chlorothalonil, respectively.
The results obtained from the proposed methods were compared statistically by using one-way ANOVA, and the results revealed there were no significant differences between ratio spectra and mean centering methods with the zero-crossing technique.
The proposed methods are successfully applied for the simultaneous estimation of the residue of both pesticides in cucumber and cabbage samples.
American Psychological Association (APA)
Omer, Shilan A.& Fakhre, Nabil A.. 2019. Three Different Spectrophotometric Methods for Simultaneous Determination of Pyriproxyfen and Chlorothalonil Residues in Cucumber and Cabbage Samples. Journal of Spectroscopy،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1192140
Modern Language Association (MLA)
Omer, Shilan A.& Fakhre, Nabil A.. Three Different Spectrophotometric Methods for Simultaneous Determination of Pyriproxyfen and Chlorothalonil Residues in Cucumber and Cabbage Samples. Journal of Spectroscopy No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1192140
American Medical Association (AMA)
Omer, Shilan A.& Fakhre, Nabil A.. Three Different Spectrophotometric Methods for Simultaneous Determination of Pyriproxyfen and Chlorothalonil Residues in Cucumber and Cabbage Samples. Journal of Spectroscopy. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1192140
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1192140