Functional modification of PVA or introducing reactive functional groups into the polymer chain has been believed to have basic significance while expanding its application. Phosphorous containing nitrogen heterocyclic compounds have been synthesized. The synthesized compounds were characterized using FTIR, NMR spectral studies. Thermo gravimetric analysis (TGA) display that organophosphorous-N...

organophosphorous (op) pesticides are used frequently in agriculture, particularly in asian countries over the past decades. poisoning by these agents, either as acute or chronic in these nations, is a serious health problem. op pesticides residue in fruits and vegetables that may not induce early clinical features, could also affect the human health. therefore, medical and health professionals...

In this paper the efficiency of a method for the separation and identification of pesticides in lanolin is presented. Theses pesticides belong to the organophosphorous and synthetic pyrethroids families. After the gel permeation chromatography, pesticides are separated from lanolin into two fractions corresponding to the two families, which simplify subsequent analysis by gas chromatography.

This contribution highlights correlation between the surface concentration of a chemisorbed organophosphorous probe (flavin mononucleotide) and the relative hydroxyl surface coverage of nanostructured ITO electrodes, which can be tuned during post-deposition reductive annealing. The resulting modified electrodes are very stable in aqueous solution, highly hydrophilic and fully-accessible to the...

A simple, efficient, facile and surface mediated method for synthesis of hydrazides of organophosphorous acids has been developed from their corresponding chloridates using calcium oxides as a solid support at room temperature. The developed method gave the desired hydrazides in excellent yields (7592%) and avoids the use of column chromatography.

background: organophosphorus (op) poisoning is a major public health problem in developing world. op pesticides inhibit carboxylic esterase enzymes including plasma cholinesterase (pche). clinical manifestations following op poisoning can be associated with the extent of decrease of pche. this study was designed to investigate the relevance of pche level to clinical manifestations in op poisoni...

kumasi, sekondi-takoradi, and accra are the major recipients of agricultural commodities or productions in ghana, primarily due to their population and ready markets. to ensure food security, meet food demands, and mitigate the threats posed by pests and diseases, pesticides are used when cultivating vegetables and fruits in ghana. the present study has been conducted to assess the concentratio...

A multi-residue method for determination of fi ve groups of 85 pesticides organochlorine, carbamate, organophosphorous, pyrethroid and others in non-fatty food, e.g. vegetables, fruits and green tea is described. The method is based on stir bar sorptive extraction (SBSE) coupled to thermal desorption (TD) and retention time locked (RTL) GC-MS