جستجوی مقالات مرتبط با کلیدواژه « ایمیداکلوپراید » در نشریات گروه « پزشکی »

Imidacloprid, a neonicotinide plant toxin, is used as an insecticide in agriculture. Due to its high degradation resistance and water solubility it is of highly concerns. Therefore, the aim of this study was to investigate the degradation of imidacloprid by modified magnesium oxide catalyst under irradiation of light and peroxymonosulfate.

In this study, modification of magnesium oxide with nitrogen was made by sol-gel method and then iron oxide nanoparticles was used as a magnetic source. Operational parameters were catalyst loading, peroxymonosulfate concentration, reaction time and common anions (nitrate, bicarbonate and chloride). Residual concentration of contaminant was measured by high performance liquid chromatography (HPLC) and mineralization rate was evaluated by measuring TOC.

The results of the study showed that the photocatalytic degradation of the pollutant in the optimal condition was as following: catalyst concentration= 150 mg/L, peroxymonosulfate = 75 mg/L and reaction time= 60 min was 88%. Moreover, at optimum condition, the rate of mineralization was obtained 52%. Results comparison for prepared catalyst under light and dark condition indicated that the as-made catalyst is photocatalytic.

The as-prepared catalyst can be activated as a photocatalyst under LED light and proxymonosulfate for removal of organic pollutants.

Imidacloprid is a new and potent nitromethylene insecticide with high insect activity at very low speed. It is the first highly effective insecticide that acts on the nervous system like nicotine, blocking postsynaptic nicotinergic acetylcholine receptors. In this study, a case of suicide with injectable imidacloprid was reported.

At the scene of the suicide, a 24-year-old woman was lying on the ground in front of the first step of the house. The corpse bruise was naturally colored in the posterior areas of the trunk and the corpse was frozen. Cyanosis of the lips, nails, and subcutaneous injection site was evident on the outer right side of the umbilicus. Brief autopsy findings showed a total of about 20 cc in both pleural spaces. Toxicological samples were taken from the vitreous, blood, bile, liver, kidney, and stomach contents and tissue at the injection site.

Organophosphorus poisoning is a common public health problem in developing countries where agriculture is one of their professions. Common ways of poisoning; Mouth, inhalation or skin contact. And this may happen unintentionally and intentionally

Agricultural poisons are one of the most important groups of pollutants in agricultural industries that cause environmental pollution. The main objective of this research was to remove imidacloprid from contaminated water by using modified magnetic-silica core-shell nanoparticles.
This study was conducted at the laboratory scale and batch system. The physical and structural characteristics of the synthesized adsorbent were determined by scanning electron microscopy (SEM). In addition, the effects of various parameters such as pH, initial concentration of imidacloprid, adsorbent dose, and contact time were investigated in order to determine the equilibrium isotherms and adsorption kinetics. The potential of the adsorbent for removal of imidacloprid showed no significant change after four runs of the reaction.
The highest efficiency was found to be 97.85 %, achieved at the following conditions: a contact time of 67 minutes, an adsorbent dose of 0.06 g/l, an initial concentration of 15.6 mg/l and a pH of 6.5. The correlation coefficient of Langmuir isotherm (R2=0.9843) was higher than that of Freundlich (R2=0.8). Therefore, the Langmuir isotherm model is hereby introduced to be used for predicting the adsorption behavior of imidacloprid onto the nano-adsorbent from an aqueous medium. The reaction kinetics fitted well with the pseudo-second-order model.
A modified magnetic-silica core-shell nanoparticle is a cost-effective and recoverable adsorbent for efficient removal of imidacloprid from contaminated water.