Photodegradation of Insecticide Chlorpyrifos in Aqueous Solution under Simulated Solar Light Irradiation Conditions using Babolrood River Water

Authors

  • Abbas Ahmadi Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
  • Babak Nahri-Niknafs Agrochemical Industrial Research Center, Karaj, Iran
  • Seyed-Ali Sobhanian Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Tehran Medical
Abstract:

Chlorpyrifos is an organophosphate insecticide, used to control foliage and soil-borne insect pests on a variety of food and feed crops. In the natural environment, Chlorpyrifos can be degraded  through  several  possible  processes,  including  photodegradation, biodegradation,  and hydrolysis.  In  the  present  work  the  photodegradation  and  environmental  fate  of  Chlorpyrifos  in aqueous  phase  under  simulated  natural  conditions  in  the  presence  of  artificial  UV-light  was investigated.  The  gas chromatography-mass spectrometry  (GC-MS) identification of Chlorpyrifos photodegradation products suggested the formation of only one major product, i.e., Chlorpyrifosoxon. Based on the structurally identified photoproduct a plausible degradation pathway is proposed for the photolysis of Chlorpyrifos in natural water over UV irradiated.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Photodegradation of Insecticide Diazinon under Simulated Solar Light Irradiation Conditions and Identification of Photoproducts

The photodegradation of the organophosphorus insecticide diazinon with a high probability to contaminate aquatic environments under simulated solar light irradiation conditions on natural water of a river in North of Iran has been studied. During exposure to solar natural light, diazinon is broken down and produced photoproducts in environment. The degradation of the insecticide was a 32 hour p...

full text

Photocatalytic degradation of some organic dyes under solar light irradiation using TiO2 and ZnO nanoparticles

Nanoparticles of the ZnO and TiO2 were synthesized and the physicochemical properties of the compounds were characterized by IR, X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The XRD patterns of the ZnO and TiO2 nanoparticles could be indexed to hexagonal and rutile phase, respectively. Aggregated nanoparticles of Z...

full text

[Photodegradation of nonylphenol polyethoxylates in aqueous solution].

Two lamps, including simulated sunlight lamp and UVA-365 nm lamp, were used to study the kinetics and changes of component distribution of NPEOs mixture in solution during photodegradation, as well as the effect of H2O2 on the photodegradation. LC-MS was used to analyze the products of NPEOs photodegradation. It was found that photodegradation of NPEOs occurred under both simulated sunlight and...

full text

Preparation of carboxymethyl chitosan in aqueous solution under microwave irradiation.

Carboxymethyl chitosan was prepared by reacting chitosan with chloroacetic acid in water under microwave irradiation. The effect of the reaction conditions was investigated and optimal conditions were identified. The influence of mass ratio of chloroacetic acid to chitosan, microwave power and pH on the degree of substitution or intrinsic viscosity were further studied. The degree of substituti...

full text

Identification of mercury methylation product by tert-butyl compounds in aqueous solution under light irradiation.

The methylation of mercury (Hg) is of great concern as methylmercury (MeHg), the most toxic species, is produced. This study examined the possibilities of tert-butyl compounds (tert-butyl alcohol (TBA) and tert-butyl hydroperoxide (TBH)) and other alcohols serving as methyl donors for Hg photo-methylation under light irradiation. The yield of MeHg varied among the methyl donors, and it was also...

full text

Enhancing Photocatalytic Activity of Nitrogen Doped TiO2 for Degradation of 4-Chlorophenol under Solar Light Irradiation

The nitrogen doped TiO2 as heterogeneous photocatalyst via sol-gel method were successfully synthesized. The physicochemical, morphological and textural characteristics of the obtained TiO2 samples were characterized by advanced analysis techniques. The photocatalytic activity of the samples were evaluated for degradation of 4-CP under solar irradiation. The as-synthesized photocatalysts were c...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 14  issue 4

pages  62- 68

publication date 2021-01-01

By following a journal you will be notified via email when a new issue of this journal is published.

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023