Organophosphorus pesticides

Sakata, Masakatsu

doi:10.1007/3-540-27579-7_60

Cited by 8 publications

(2 citation statements)

References 12 publications

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“…We used high purity concentrated nitric acid to digest samples for detection of cadmium according to Sakata [10]. We quantified the concentrations of cadmium in urine samples using ICPMS 7700 Agilent.…”

Section: Methodsmentioning

confidence: 99%

Is childhood obesity a result of toxic exposure to cadmium or malathion? An observational pilot Egyptian study

El-Atta

El-Hawary

2021

Toxicology Communications

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Nowadays, exposures to some environmental chemicals may contribute to obesity in children. The aim of the current work is to assess the association between the environmental pollutants cadmium, malaoxon and malathion dicarboxylic acid (MDCA) and obesity in children. Authors conducted a case-control study on 80 children. We recruited 40 obese children and 40 normalweight children. For each child, we measured urinary concentrations of cadmium (by ICP), malaoxon (by LC/MS/MS), and MDCA (by LC/MS/MS). Results: Malaoxon concentrations were slightly higher among non-obese group B children (median ¼ 0, IQR 0 to 10.29 mg/g) than in obese group A children (median ¼ 0, IQR ¼ 0 to 2.14). There were no significant differences in creatinine-adjusted MDCA or Cadmium.

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Section: Methodsmentioning

confidence: 99%

Is childhood obesity a result of toxic exposure to cadmium or malathion? An observational pilot Egyptian study

El-Atta

El-Hawary

2021

Toxicology Communications

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“…Another group of major pollutants is pesticides, which have the potential to contaminate drinking water supplies. Organophosphorus pesticides are widely used as insecticides in agriculture, which are known to be toxic and cause severe and long-term effects in humans and animals [7].…”

Section: Introductionmentioning

confidence: 99%

Characterization of oil shale kerogen semi-coke and its application to remove chemical pollutants from aqueous solutions

Lees¹,

Jõul²,

Pikkor³

et al. 2023

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An alternative adsorbent from oil shale semi-coke material for removing chemical pollutants from aqueous solutions was investigated. For this purpose, enriched oil shales with different kerogen contents (57, 79 and 90 wt%) were pyrolyzed in nitrogen atmosphere at 600-900 °C at a heating rate of 10 °C/min and a hold time of 60 min. The surface properties of semicokes, namely Brunauer-Emmett-Teller (BET) surface area, pore volume and pore size distribution (PSD), were determined by nitrogen adsorption. The studied semi-cokes were found to be micro-and mesoporous. The highest semicoke BET surface area, 160 m 2 /g, was obtained at a pyrolysis temperature of 700 °C, which corresponds to 519 m 2 /g of char, excluding the minerals. This porous carbon material was tested as an adsorbent to remove pesticides and phenolic compounds from aqueous solutions. Three kinds of phenolic compounds (resorcinol, 5-methylresorcinol, 4-nitrophenol) and three kinds of organophosphorus pesticides (dimethoate, parathion, malathion) were tested to study the adsorption on the semi-coke material. Different contact times were tested for the adsorption of the compounds of interest. The results showed that with an adsorbent dosage of 10 mg/mL over 98% of pesticides were removed from the solution within 30 min at an initial concentration of 100 µM (corresponding to 23-33 mg/L depending on the compound). More than 97% of the phenolic compounds were adsorbed from water within six hours at an initial concentration of 10 µM (1.1-1.4 mg/L).

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