Luminescent Probe for Crotoxyphos Pesticide Detection Based on Eu (III) Complex with 7-Hydroxy-Coumarin-4-Acetic Acid
A., A., Ibrahim, I., Hassan, N., Darwish, H. (2016). Luminescent Probe for Crotoxyphos Pesticide Detection Based on Eu (III) Complex with 7-Hydroxy-Coumarin-4-Acetic Acid. EKB Journal Management System, 5(1), 31-37. doi: 10.21608/japp.2016.7588
Azab A.; I. Ibrahim; N. Hassan; H. Darwish. "Luminescent Probe for Crotoxyphos Pesticide Detection Based on Eu (III) Complex with 7-Hydroxy-Coumarin-4-Acetic Acid". EKB Journal Management System, 5, 1, 2016, 31-37. doi: 10.21608/japp.2016.7588
A., A., Ibrahim, I., Hassan, N., Darwish, H. (2016). 'Luminescent Probe for Crotoxyphos Pesticide Detection Based on Eu (III) Complex with 7-Hydroxy-Coumarin-4-Acetic Acid', EKB Journal Management System, 5(1), pp. 31-37. doi: 10.21608/japp.2016.7588
A., A., Ibrahim, I., Hassan, N., Darwish, H. Luminescent Probe for Crotoxyphos Pesticide Detection Based on Eu (III) Complex with 7-Hydroxy-Coumarin-4-Acetic Acid. EKB Journal Management System, 2016; 5(1): 31-37. doi: 10.21608/japp.2016.7588

Luminescent Probe for Crotoxyphos Pesticide Detection Based on Eu (III) Complex with 7-Hydroxy-Coumarin-4-Acetic Acid

Journal of Applied Plant Protection
Article 4, Volume 5, Issue 1, December 2016, Page 31-37  XML PDF (1.16 MB)
Document Type: Original Article
DOI: 10.21608/japp.2016.7588
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Authors
Azab A.1; I. Ibrahim1; N. Hassan2; H. Darwish* 2
1Chemistry Department, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt
2Chemistry Department, Faculty of Science, Port Said University, Port Said, Egypt.
Abstract
Luminescent Europium complex based on7-hydroxy-coumarin-4-aceticas ligand was investigated as a probe
for the detection of organophosphorus pesticides. The complex exhibited an interesting action towards Crotoxyphos
pesticide. The luminescence of the Eu(III)-7-hydroxy-coumarin-4-acetic was remarkably enhanced by gradual addition
of Crotoxyphos. Limit of detection (LOD) = 1.86 μM and limit of quantitation (LOQ) = 6.19μM. Binding constant at
different temperatures was calculated according to Benesi-Hildebrand equation. The thermodynamic parameters DH, DS
and DG were calculated for characterization of the nature of force due to interaction of the complex with Crotoxyphos.
Finally, the effect of interfering anion and cations that naturally occur in water and soil was studied, in addition;
interference of some pesticides was studied.
Keywords
Luminescence probe; europium; Coumarin derivative; Crotoxyphos
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