Abstract
New High Throughput Microtiter Plates for Detection of Organophosphorous Pesticides in Environmental Samples.
Highlights
Organophosphorus pesticides (OPs) are used in a wide range in many fields especially in agriculture fields to improve the quality and quaintly of crops, OPs are synthetic chemical compounds of esters, amides, or thiol derivatives of phosphoric, phosphonic, phosphorothioic or phosphonothioic acids
We have studied the interaction of Tb(III)with Ethyl 1-allyl-1,2-dihydro-4-hydroxy-2-oxoquinoline3-carboxylate(EADHOC) with different organophosphorus pesticides (OPs) by using luminescence spectroscopy
The absorption spectrum of 3×10-5M EADHOC as the free ligand in ethanol has maximum absorption band at λ1=320nm, λ2= 350nm, the first band could be attributed to π-π* transition while the second one is the characteristic band for n-π* transition as shown in figure 3.Upon addition of 1×10-5M of Tb(III) to the ligand solution, the first band of the ligand is slightly shifted to the lower wavelength (λ=316 nm) with a decrease in the absorbance value, while the second band of the ligand become as a shoulder, such behavior is a good configuration of the binding of Tb(III) to the ligand molecule
Summary
Organophosphorus pesticides (OPs) are used in a wide range in many fields especially in agriculture fields to improve the quality and quaintly of crops, OPs are synthetic chemical compounds of esters, amides, or thiol derivatives of phosphoric, phosphonic, phosphorothioic or phosphonothioic acids. Organophosphorus pesticides (OPs) compounds are highly powerful inhibitors of cholinesterase, and Ops have a very highly toxicity effect on human health and bad environmental effect. Organophosphorus pesticides with a Phosphoryl (P=O) function group such as (Di-Chlorvos and Paraoxon-Ethyl) wide spread and frequent commercial use of organophosphate based compound in agricultural lands and other environmental application, So it has resulted in their presence as residues in crops,soil and polutry proudcts and severe risk to the aquatic environment as well as to drinking water quality. The European Union (EU) has recently scheduled a monitoring based priority list containing those species of pesticides, which are considered to represent an exceptionally high risk to humans and to the aquatic environment [2]
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