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

Pesticides are well-known for their carcinogenic, mutagenic, and teratogenic properties, and they exhibit resistance to environmental degradation. Organophosphorus compounds represent one of the largest and most diverse groups of pesticides globally. Diazinon, an organophosphorus pesticide widely used in agriculture, was selected as the target pollutant for the present study.

The co-precipitation method was employed to synthesize zinc oxide nanocomposites coated on polyethylene terephthalate (PET). Subsequently, the nanoparticle structure was analyzed using XRD, FT-IR, SEM, and EDX analyses. The efficiency of diazinon sonocatalytic removal by zinc oxide nanocomposites coated on PET was investigated, and the impact of various parameters, including pH (3-11), nanocomposite dosage (0.2-2.5 g/L), initial diazinon concentration (5-50 mg/L), contact time (5-60 min), hydrogen peroxide concentration (2-50 mM), different gases (oxygen and nitrogen gas (2 L/min)), organic compounds (folic acid, citric acid, humic acid, EDTA, oxalate acid, phenol), radical scavengers (ammonium oxalate as h+ scavenger, benzoquinone as scavenger, tert-butyl alcohol as •OH scavengers), various processes (PET, US, PET/US, ZnO, ZnO-PET, ZnO/US, ZnO-PET/US), and recycled experiment, was evaluated. Firstly, the pH optimum was acquired to be 5, with changing pH and constant nanocatalyst dosage and initial diazinon concentration. The effects of different parameters on the removal of diazinon were investigated at the constant value of pH. Diazinon residual concentration was measured by a spectrophotometer (UV/VIS, DR5000) at a wavelength of 295 nm.

FT-IR and XRD analyses confirmed the coating of ZnO nanorods onto PET. Under optimal conditions, initial diazinon concentration of 20 mg/L, pH of 5, and nanocomposite dosage of 2.5 g/L for 60 minutes the sonocatalytic removal efficiency of diazinon reached 99.81%. The removal efficiency decreased from 100 to 40.15% as the diazinon concentration increased from 5 to 100 mg/L. The first-order rate constant (kobs) decreased from 0.123 to 0.0086 min-1, while R2 decreased from 0.985 to 0.9152, and electrical energy per order (EEo) increased from 181.073 to 2589.77 kWh.m-3 with increasing diazinon concentration. The sonocatalytic removal of diazinon increased with rising H2O2 concentration up to 5 mM. However, the addition of organic compounds and nitrogen gas led to a decrease in diazinon removal efficiency. The effectiveness of processes for pesticide removal from drinking water decreased due to anions scavenger activity. Examination of radical scavengers revealed that •OH radicals were the most active in diazinon removal. Notably, proper sonocatalytic activity in diazinon removal was observed even after six successive cycles. Intermediate products identified by GC-MS in the sonocatalytic removal process included diazoxon, IMP, hydroxy-diazinon, and diazinon-methyl-ketone.

The findings suggest that zinc oxide coated on polyethylene terephthalate, as an affordable, practical, and environmentally friendly material, exhibits satisfactory efficiency for the sonocatalytic removal of diazinon from water environments.

Diazinon is an organophosphorus insecticide that is widely used in paddy fields and gardens. The entry of resistant pollutants into drinking water sources, soil, and agricultural products can be harmful to human health and the environment. This study aimed to identify and isolate diazinon-degrading bacteria and measure the amount of poison decomposed by superior bacteria in liquid and soil environments.

Sampling was conducted from Tonekabon gardens. The strains were identified and sequenced using polymerase chain reaction based on 16S rRNA. The rate of diazinon degradation by the isolated bacteria was measured by gas chromatography

Two strains of diazinon-degrading bacteria, Serratia and Enterobacter cloacae, were identified. Bacteria with diazinon concentrations of 10 and 20 ppm were cultured in broth and soil for 10 days, and the amount of poison decomposition was measured. The results indicated that Serratia bacteria in the broth medium, with initial concentrations of 10 and 20 ppm, consumed 64.3% and 78.4% of diazinon, respectively, while in the soil with the same concentration, it decomposed 90.2% and 98.25% of diazinon. Enterobacter cloacae bacteria consumed and decomposed diazinon in the broth and soil environments, with percentages of 23.1, 17.95, 31.19, and 88.05%, respectively. According to the results, Serratia has a higher decomposition ability compared to Enterobacter.

The results of this research showed that some microorganisms in the soil have the ability to decompose diazinon. Utilizing these microorganisms and other biological methods to clean contaminated soils can be a suitable approach.

Diazinon is an organophosphate insecticide that causes oxidative stress. However, physical activity improves the antioxidant status of the heart. The present study aimed to investigate the effect of an eight-week high-intensity interval training (HIIT) on the indices of oxidative stress in the heart tissue in male rats exposed to diazinon.

In this experimental study, 24 male Sprague-Dawley rats with a weight of 150 to 200 gm and an average age of eight weeks were randomly divided into three groups )n=8), including 1) control (C), 2) diazinon (D), and 3) HIIT and diazinon (HD). Groups 2 and 3 received diazinon 1.5 mg/kg intraperitoneally for five days a week for eight weeks. Group 3 also underwent HIIT with an intensity of 85% to 110% of VO2max and a speed of 15-25 m/min for eight weeks. After eight weeks, Malondialdehyde (MDA) levels, superoxide dismutase (SOD), and catalase (CAT) gene expression were measured in the heart tissue. Data were analyzed using the SPSS software (version 22) and running the Shapiro-Wilk statistical test, one-way analysis of variance, and Tukey’s post hoc tests. Moreover, a P-value of ≤0.05 was considered significant.

The findings showed that diazinon significantly increased MDA (P=0.001) and decreased SOD and CAT (P=0.001) in the heart tissue. On the other hand, HIIT led to a decrease in MDA (P=0.001) and an increase in the antioxidant indices of SOD (P=0.001) and CAT (P=0.01) in the heart tissue of rats exposed to diazinon.

It seems that regular HIIT had protective effects against heart tissue damage by diazinon poisoning by reducing oxidative stress indicators and increasing antioxidant activities in the heart tissue.

Diazinon is used as an organophosphate pesticide in agriculture. Studies showed that a lot of organophosphates can produce free radicals and disrupt antioxidant system. Resveratrol as an antioxidant can reduce oxidative stress in kidney tissue. The study aimed to investigate the protective role of resveratrol on oxidative stress induced by sub-acute diazinon exposure in kidney tissue of rats.

Twenty-eight Wistar rats were randomly divided into 4 groups: control, diazinon (70 mg/kg), diazinon (70 mg/kg) + resveratrol (5 mg/kg), diazinon (70 mg/kg) + resveratrol (10 mg/kg) groups. The treatments were administered by gavage daily for four weeks. Urine samples were collected 24 hours after the last dose. The rats were anesthetized with ether and 3 mL of blood samples was taken from animals. Diazinon level in urine was measured using HPLC. The serum level of creatinine, urea, protein, malondialdehyde (MDA), and total antioxidant activity (TAC) were evaluated by biochemical methods.

The results showed that the diazinon level in the diazinon group was significantly higher than that of the diazinon (70 mg/kg) + resveratrol group (5 and 10 mg/kg) (P<0.05). In addition to the protein levels of urine, serum levels of urea, creatinine, MDA and TAC in the diazinon group were significantly higher than that in the control group (P<0.05). Resveratrol improved these changes.

Our findings implied that resveratrol improves the antioxidant status of the body against diazinon toxicity, so it can improve renal function in the face of diazinon.

Early diagnosis and treatment can prevent one-third of the deaths from cancer. Undoubtedly, food safety and control is one of the most effective interventions for cancer prevention. Occurrence of carcinogenic chemicals such as organo-phosphosphate pesticides has been frequently reported in food samples. Unfortunately, there is not an integrated surveillance system to detect and measure these chemicals in Iran. Milk and dairy products are more nutritious than other foods and have a wider range of consumption. The purpose of this paper was to review the researches on occurrence of Diazinon and Malathion pesticides in dairy products.

This review has been conducted by searching databases such as: Science direct, Google Scholar and PubMed.

According to previous Studies, it was demonstrated that dairy products such as milk can be contaminated with organophosphate pesticides such as Diazinon and Malathion.

It is recommended that, before purchase, milk and other dairy products introduced to military centers be traced for organophosphate pesticides, especially Diazinon and Malathion, so that the purchased dairy products would have the least amount of toxins and the health of military personnel be secured.

Exposure to organophosphate pesticides, including diazinon, can lead to increased production of free radicals and decreased cellular antioxidant capacity and male infertility. Thymoquinone (TQ) is an active component of Nigella sativa with well documented antioxidant effects. This study evaluated the effects of thymoquinone on oxidative stress induced by exposure to diazinon and semen quality in male rats.

Twenty-eight male Wistar rats weighing 200-300 g were randomly divided into four groups (n=7, each). The first (control) group received a single intraperitoneal (i.p.) injection of olive oil (medication vehicle). Testicular toxicity was induced in rats of the second and third groups by a single injection of diazinon (20 mg/kg, i.p.). Also, the animals of the second and third groups received the vehicle of TQ (olive oil) or TQ (10 mg/kg/day, i.p.), respectively, for five consecutive days starting 3 days before diazinon administration. The fourth group of animals received thymoquinone (10 mg/kg/day) for five consecutive days without induction of diazinon toxicity. Thirty-six hours later, semen quality was assessed for motility, morphology, and viability of sperms in addition to measurement of malondialdehyde (MDA) level in testis tissue.

The results showed that the sperm motility significantly decreased and MDA level significantly increased (P<0.0001) after diazinon exposure whereas thymoquinone increased sperm motility and decreased MDA level (P<0.0001) in testis tissue after exposure to diazinon as compared to the control group.

Since diazinon increases lipid peroxidation in sperm plasma membrane through production of free radicals, it can be concluded that administration of thymoquinone as an antioxidant can prevent diazinon toxicity in testis tissue of rats, and improve the quality of semen.

Diazinon is an organophosphate insecticide that binds to the acetylcholinesterase enzyme after metabolization causing its inactivation. Galic acid is a polyphenolic compound with nucleophilic properties. The aim of this study was to investigate the effects of gallic acid on reactivation of acetylcholine and butyrylcholinesterase inhibited by diazinon in mice and human serum and erythrocytes.

The animals were divided into seven groups, including a control group that received corn oil as a solvent and other groups that received diazinon (80 mg/kg), atropine (20 mg/kg), and pralidoxime (20 mg/kg). Gallic acid was injected intraperitoneally at 50, 100, and 200 mg/kg. Cholinesterase levels (acetylcholine and butyrylcholinesterase) were evaluated after 3 and 24 h of intoxication in mice serum and erythrocytes. In addition, in vitro studies were done in human serum and RBCs.

Activities of cholinesterase in serum and erythrocytes significantly decreased after 3 and 24 hours of poisoning in diazinon-treated group compared to control group in vivo and in vitro. Co-treatment with atropine and gallic acid (at all doses) significantly increased cholinesterase activity compared to the diazinon group in vitro and in vivo (P< 0.0001).

Combination therapy with gallic acid (at different doses) and atropine reduced inhibition of cholinesterase activity caused by diazinon and improved its reactivation. Gallic acid reactivates cholinesterase activity which might be due to hydroxyl groups in its compounds.

Diazinon is one of the most widely used pesticides in agricultural pest control that pollutes water resources. The aim of this study was to evaluate the adsorption of diazinon from water by zeolite modified with cationic surfactant hexadecyltrimethyl ammonium bromide (HDTMA).

The amount of HDTMA surfactant used to modify the zeolite was one-fold External Cation Exchange Capacity (ECEC) of zeolite (0.53 mmol/g). Modification was performed by contacting zeolite and surfactant for 24h on the shaker. Unmodified and modified zeolite were tested as adsorbent. Experiments were conducted in batch mode in acidic (pH=3), natural (pH=7), and alkaline conditions (pH=11).

The optimal contact times for adsorption of diazinon were 10 and 5 minutes on unmodified zeolite and HDTMA-modified zeolite (HMZ), respectively. According to the Freundlich model, the amount of diazinon absorbed by the HMZ was about 8 times more than that of the unmodified zeolite. By using 1gl-1 of HMZ at pH= 3, the maximum adsorption was 97.6%. Pseudo second order kinetics and Freundlich isotherm model well describes the absorption of diazinon on HMZ.

Modified zeolite has high capacity, so, the method used here, can be used to increase the efficiency of diazinon adsorption in wastewater treatment plants.

Genetic changes and mutations in the genes involved in spermatogenesis can occur by environmental and congenital factors. Considering, the extensive use of diazinon in the farms and because we found no study on the effects of diazinon on the expression of CatSper1 gene, a key element of male fertility, we decided to perform this study in order to determine the effects of different doses of diazinon on CatSper1 gene expression, sperm motility and thickness of seminiferous tubules in adult male mice.

Twenty-four adult male Balb/c mice were randomly divided into four groups. The control group did not receive any injection. The sham group received diazinon solvent. Diazinon1 group received 7.5 mg/kg and, diazinon group 2 received 30 mg/kg of diazinon intraperitoneally, once a day for 2 weeks. After 35 days, we studied the sperms from the molecular and histological aspects and sperm motility was evaluated.

Sperm motility was significantly decreased in diazinon 1 (P-value = 0.001) and diazinon 2 (P-value = 0.001) groups compared to that in the control group. Gene expression in diazinon group 1 and diazinone group 2 (P-value = 0.002) was significantly lower than that in the control group. Histological examination also showed that diazinon treatment reduced germinal epithelium thickness and led to vacuole formation and degeneration. Epithelial thickness was significantly decreased in diazinon group 1 (P-value = 0.003) and diazinon group 2 (P-value = 0.006) in comparison to that in the control group.

Diazinon affects male fertility by reduction in sperm motility and degenerative changes in germinal epithelium. It also, decreases expression of CatSper1 gene, a key gene in fertility.

In this study, the toxicity and carcinogenicity of an organophosphate pesticide, diazinon, were studied in the mouse by MTT, micronucleus and karyotype methods. Morphological changes of cell lines in the vicinity of diazinon were also evaluated and recorded.

Mice were randomly divided into two groups (n=15 per group): treatment and control groups. In the treatment group, diazinon (1 ml of 1 ppm concentration) was applied once daily topically on the shaved skin and for 12 weeks; in the controls, physiological salt solution was used. At the end of the period, tissue samples were taken from the organs after autopsy. Murine L929 fibroblast cells were cultured with and without diazinon (10, 25, 50, 100 µg/ml). The morphological changes of the cells were evaluated after 48 hours. The cytotoxicity was assessed in vitro by MTT assay and micronucleus and karyotype and IC50 percent were also determined.

Microscopic observations of kidney tissue revealed mild cytotoxicity in proximal tubules. Mild hepatotoxicity was also observed in the liver tissue. Morphological results of cell line showed that diazinon (50 μg/ml) had a significant effect compared to the control group. The percentage of micronucleus in the group treated with 100 µg/ml of diazinon was significantly higher than the control. In the MTT assay, the mean optical absorption at concentrations of 10, 25, 50, 100 μg/ml was significantly different from that of the control group (P <0.05).

Skin contact with Diazinon induces pathologic effects on organs, cytotoxicity, and procarcinogenic effect in mice.

Diazinon increases the production of free radicals and hurts the body tissues. The aim of this study was to evaluate the effect of green tea on tissue and liver enzymes in diazinon-treated rats. In this experimental study, 40 NMRI female mice were divided into 8 groups: control group1 did not receive substance; control group 2 and control group 3 received olive oil and saline, respectively, for 7 days; shamgroup 1 received IP injection of diazinon in dose of 60 mg/kg for 7 days; the sham group 2 and sham group3 received green tea extracts with 200 and 300 mg/kg for 28 days. Experimental group 1 and 2 were treated with 200 and 300 mg/kg green tea extract for 28 days, respectively. Diazinon was prescribed with dose of 60 mg/kg since 14- day for 7 consecutive days in the experimental groups. 48 hours after the last injection, liver tissue was studied for histopathologic examination. The level of liver enzymes activity was evaluated. Data were analyzed by ANOVA. The activity of liver enzymes in the control group 1 increased compared to the control group, which decreased after application of green tea extract in experimental groups 1 and 2. The histopathological results showed that hepatocytes were destroyed in the control group 1, while tissue necrosis was not observed in experimental groups 1 and 2. It could be concluded that the consumption of Camellia sinensis normalizes liver enzyme levels and improves liver tissue changes due to diazinon.

The diazinon insecticide is a strong acetylcholinesterase controller at the nerve terminals. This study was conducted to determine the effect of diazinon on functional tests and tissue alterations in rat liver. In this experimental study, 40 adult male Wistar rats were allocated into 5 groups including the first, second and third experimental groups were received 50, 100 and 150 mg/kg/bw of diazinon, respectively, orally during 21 days. The control group did not receive any medication and the sham group received solvent. At the end of study, blood samples were obtained from animals and Alanine transaminase (ALT), Aspartate transaminase (AST), Alkaline phosphatase (ALP) hepatic enzymes, total protein, albumin and bilirubin were measured. After anesthesia the liver of animals were removed and evaluated by hematoxylin eosin histological staining methods. The level of AST and ALT enzymes in the experimental groups receiving 100 and 150 mg/kg/bw doses of diazinon significantly increased in compared to the control group (p<0.05). The level of ALP of animals in all groups receiving diazinon was significantly higher than the control group (P<0.05). Total protein level significantly reduced in all groups receiving diazinon compared to the control group (P<0.05). The level of albumin in the experimental group receiving 150 mg/kg/bw dose of diazinon significantly reduced in comparision with controls. In the experimental groups, tissue samples showed more necrosis with increasing doses of diazinon. Diazinon increases level of liver enzymes and decreased total protein and albumin level and causes the histological alterations in rat liver.

Nowadays, since the pesticide residues in food products can cause adverse effect on the human health, this study was carried out to determine benomyl and diazinon residues in strawberry and also related health risk assessment. In this descriptive study, a total of thirty specimens of greenhouse strawberries were collected from market basket of city of Hamedan. After preparation and processing the samples in the laboratory, benomyl and diazinon residues were determined using spectrophotometer at wavelength 400 nm for benomyl and 245 nm for diazinon in three replications. Also, health risk assessment was computed according to health risk assessment model. The results showed that among the analyzed strawberry samples benomyl was detected in amounts ranging from 0.013 mg/kg to 0.989 mg/kg, and diazinon ranged from 0.01 mg/kg to 1.416 mg/kg. Also, the mean levels of both pesticide residues in strawberry samples were higher than the Maximum Residue Levels (MRL) established by WHO, and also the EU. On the other hand, although the value of the MOET index with 180.51 indicates the cumulative risk of benomyl and diazinon pesticides in strawberries, based on the results of health index, there are no potential health concerns through consuming of strawberry from the study area. Although the results of this study showed that there are no potential health risks for consumers through consuming of strawberry, with increasing use of chemical pesticides for farm and garden products, to achieve food safety, regular monitoring of pesticide residues in foodstuffs is recommended.

Measurement of pesticides in biological matrices is become a serious challenge for researchers due to their very low concentration in different matrices. The aim of this study was to develop a new sample preparation method with high accuracy and validity and short retention time for determination of diazinon.
Material and Dispersive liquid-liquid micro-extraction technique coupled with high performance liquid chromatography equipped with ultra violet detector was developed for trace extraction and determination of diazinon pesticide in human urine samples. One variable at a time method was used to optimize parameters affecting the diazinon extraction. Different parameters such as extraction solvent, disperser solvent, and volume of the extraction solvent, volume of the disperser solvent, centrifugation time and speed, salt addition, and sample pH were studied and optimized. Findings showed that optimal levels of these variables for diazinon pesticide were 150 μl of carbon tetrachloride as extraction solvent, 1.5 ml of methanol as dispersive solvent, pH of 6, 5 minutes centrifuge time at speed of 4000 rpm , 0% (w/v) salt addition. Correlation coefficient was 0.9965 indicating the linearity of a wide range of concentrations of the toxin. LOD and LOQ was calculated less than 0.7 and 5 µg L-1 respectively. The relative standard deviation for six replicate experiments in intra-day and inter-day at tree selected concentrations (50, 200 and 1000 µg L-1) was less than 4% that indicates the accuracy and precision of the optimized method. Enrichment factor and extraction recovery for diazinon were 245 and 99% respectively. According to the results, dispersive liquid-liquid micro-extraction procedure was successfully developed for the extraction of diazinon from human urine samples. Compared to other extraction techniques, the proposed procedure had some advantages such as shorter extraction time, better reproducibility, and higher enrichment factor

Infertility is one of the most important health problems in developing countries. Long-term exposure to organophosphate insecticides can affect semen quality. This study aimed to investigate the effects of hydroalcoholic extract of Apium graveolens on semen quality and spermatogenesis in subchronic exposure to diazinon in rats.

This study was conducted on 30 male Wistar rats. The rats were divided into five groups. The rats in group1 (control) did not receive any treatment, those group 2 (sham) were given corn oil and saline (500 µL). Group 3 consisted of rats received diazinon (16 mg/kg body weight). Rats in group 4 and 5 were treated with 100 and 200 mg/kg of hydroalcoholic extract of Apium graveolens and Diazinon, respectively. The number, motility, and viability of sperms were determined after two months, and tissue sections were stained by hematoxylin-eosin after the fixation of testis. The findings of this study showed that the number and motility of sperms significantly decreased in diazinon group, compared to sham group (P<0.001). The number of sperm remarkably increased in the group that received diazinon and high dose of Apium graveolens extract in comparison with diazinon group (P<0.001). The number of primary spermatocytes and spermatids increased in dose of 200 mg/kg of Apium graveolens extract (P<0.05). In addition, low-dose Apium graveolens extract (100 mg/kg) could significantly increase the sperms motility, compared to diazinon group (P<0.001).

Discussion & It seems Apium graveolens extract can improve sperm quality, as well as spermatogenesis against diazinon toxicity.

Background and Diazinon (Dz) is a widely used insecticide. It can cause nephrotoxicity and neurotoxicity by induction of oxidative stress. Edaravone is a drug with antioxidant effect that is used in treatment of acute infraction disorders. In this study we used edaravone for ameliorating diazinon induced kidney and brain damage. Twenty four male Wistar rats were divided into the following groups: Control (normal saline), Dz (150mg/kg) and edaravone (10mg/kg and 20mg/kg) that were injected 30min before Dz. After 24 hr, the animals were anesthetized and the brain and kidney tissues were separated. Then oxidative stress factors were evaluated. Blood serum samples were also taken to determine the levels of BUN, creatinine, and nitric oxide. Dz significantly increased oxidative stress markers such as reactive oxygen species (ROS), lipid peroxidation, protein carbonyl, and glutathione oxidation in kidney and brain tissues. Also, the levels of BUN, creatinine and nitric oxide increased after Dz injection. Interestingly, ederavone administration significantly decreased ROS production in rats’ kidney and brain tissues (p<0.05). It also significantly protected kidney and brain against lipid peroxidation and glutathione oxidation (p<0.05). Edaravone treatment could noticeably inhibit diazinon induced protein carbonyl production in both tissues. Furthermore, edaravone significantly ameliorated the increased levels of BUN, creatinine, and nitric oxide due to Dz administration (p<0.05). These data suggested that edaravone can prevent nephrotoxicity, neurotoxicity and acute toxicity of diazinon via reducing oxidative stress

Diazinon is an organophosphate insecticide that normally used to control different types of harmful insects in agriculture.
25 laboratory mature female mice divided into 5 equal groups: The control group did not receive diazinon, Sham groups of A and B, respectively, received0.52 and 5.2microliter of emulsifier, Diazinon experimental groups of A and B also received, respectively, 1.3 and 13 microliter form of inhalant.
In all histomorphometry and appearance studies, there was no significant difference between the control group and two sham groups but in the experimental group of B there were abnormalities such as atrophy of the fetus and placenta, cutaneous bleeding, the position of fetus was absorbed with extra placenta. The examination of intestinal Histomorphometry of embryos in the average number of goblet cells in a level equal to length of the villi in the experimental group of B in compared to the experimental group of A and the control showed that this increases were not significant. The average number of epithelial cells in a certain level of transverse sections of villi in both the experimental groups compared to control group showed no significant difference. Percentage of goblet cells in the entire villi’s in the experimental group A and B showed a significant decrease in compared to the control group.
Consumption of high levels of Diazinon in pregnant mice caused growth and development disorders and physical anomalies in the fetus as well as abnormalities in the development of intestinal tissue of embryos.

In recent years, water pollution and pesticide residues in food chain have become a serious environmental problem. Therefore, it is essential to remove pesticides in water treatment. In this study, adsorption of diazinon by chitosan/carbon nanotube (CHN-CNT) adsorbent was investigated.
A protected crosslinking method was used to synthesize CHN-CNT with various ratios of carbon nanotube to chitosan. Scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR) were used to investigate morphological changes and chemical structure of the prepared adsorbent. Tests were done to evaluate the effects of adsorbent concentration, diazinon concentration, and contact time on adsorption of diazinon by CHN-CNT.
Findings: CHN-CNT removed diazinon from aqueous solution to a great extent. By an initial diazinon concentration of 50 mg/l, CHN-CNT concentration of 0.5 g/l, and contact time of 65 minutes, the adsorption capacity (qe) reached to 59 mg/g adsorbent. Regeneration process of the adsorbent was performed with four cycles. The efficiency recovery was obtained as 94.9% in fourth cycle.
CHN-CNT, due to being easier to prepare, high performance in adsorption, and simple and effective regeneration capacity, could be an appropriate adsorbent to eliminate the pesticide from contaminated water source.