New High Throughput Microtiter Plates for Detection of Organophosphorous Pesticides in Environmental Samples
Azab, H., Anwar, Z., Khairy, G., Abd-el-Kader, O. (2015). New High Throughput Microtiter Plates for Detection of Organophosphorous Pesticides in Environmental Samples. EKB Journal Management System, 4(1), 37-46. doi: 10.21608/japp.2015.7597
Hassan Azab; Z. Anwar; Gasser Khairy; Osama Abd-el-Kader. "New High Throughput Microtiter Plates for Detection of Organophosphorous Pesticides in Environmental Samples". EKB Journal Management System, 4, 1, 2015, 37-46. doi: 10.21608/japp.2015.7597
Azab, H., Anwar, Z., Khairy, G., Abd-el-Kader, O. (2015). 'New High Throughput Microtiter Plates for Detection of Organophosphorous Pesticides in Environmental Samples', EKB Journal Management System, 4(1), pp. 37-46. doi: 10.21608/japp.2015.7597
Azab, H., Anwar, Z., Khairy, G., Abd-el-Kader, O. New High Throughput Microtiter Plates for Detection of Organophosphorous Pesticides in Environmental Samples. EKB Journal Management System, 2015; 4(1): 37-46. doi: 10.21608/japp.2015.7597

New High Throughput Microtiter Plates for Detection of Organophosphorous Pesticides in Environmental Samples

Journal of Applied Plant Protection
Article 6, Volume 4, Issue 1, December 2015, Page 37-46  XML PDF (1.49 MB)
Document Type: Original Article
DOI: 10.21608/japp.2015.7597
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Authors
Hassan Azab1; Z. Anwar1; Gasser Khairy1; Osama Abd-el-Kader* 2
1Chemistry Department, Faculty of Science, Suez Canal University, Ismailia, Egypt.
2Chemistry Department, Faculty of Science, Suez Canal University, Ismailia, Egypt
Abstract
Quenching of lanthanides luminescence of a novel long live Tb(III)- Ethyl 1-allyl-1,2-dihydro-4-hydroxy-2-
oxoquinoline-3-carboxylate (EADHOC) as a ligand to form a complex with molar ratio 1:3 in solution has been studied
in ethanol in presence of organophosphorus pesticides both Di-chlorvos (P1) and paraoxon-Ethyl (P2). The intensity of
luminescence of Tb(III) –(EADHOC) decrease as the concentration of pesticides increase. The quenching effect was
observed with both pesticides. Direct methods of determination of pesticides under investigated have been developed by
using luminescence of Tb(III) –(EADHOC) probe in a solution. The linear range for determination of the selected
pesticides P1(Di-chlorovos) and P2(Paraoxon-Ethyl) is 7 and 1 μM. the detection limits were 1.9 and 9.8 μM for P1(Dichlorovos)
and P2 (Paraoxon-Ethyl) respectively. The Thermodynamic parameters and binding constant (K) of OPs
with Tb(III) – (EADHOC) were evaluated. Including the value of enthalpy (ΔH ) and entropy( ΔS ) changes for Probe
interaction with pesticides. As the natural water sample in this study don't contain the above mentioned OPs over the
limit detected by the methods, a recovery study was carried out after the addition of the adequate amount of
organophosphorus pesticides under investigation.
Keywords
Lanthanides ions; Microtiterplate and Organophosphorus pesticides
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