Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

Effectiveness of Ultrasound and Ultraviolet Irradiation on Degradation of Carbaryl from Aqueous Solutions

(2010) Effectiveness of Ultrasound and Ultraviolet Irradiation on Degradation of Carbaryl from Aqueous Solutions. Iranian Journal of Arthropod-Borne Diseases. pp. 47-53. ISSN 1735-7179

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Abstract

Background: Carbaryl (1-naphthyl-N-methyl carbamate) is a chemical in the carbamate family used chiefly as an insecticide. It is a cholinesterase inhibitor and is toxic to humans and classified as a likely human carcinogen. In the present study, the degradation of the carbaryl pesticide was investigated in the laboratory synthetic samples of tap water, in the effect of sonolysis and photolysis processes. Methods: This study was conducted during 2006-7 in Chemistry and Biochemistry of Pesticides Laboratory in Tehran University of Medical Sciences (TUMS) in Iran. The carbaryl (80) was used for preparing samples. First concentration of all samples were 4 mg/l. Sonochemical examinations in ultrasound reactor was done in two 35, 130 Hz, and 100 w, and three time. Photolysis examinations has done in the effect of 400 w lamp and moderate pressure and 6 time, then the amount of pesticide in the samples has been measured by the High Performance Thin Layer Chromatography (HPTLC) method. Results: The highest degradation in photolysis process after 1 hour in the 35 KHz was 35, and in the 130 KHz was 63. Degradation of carbaryl at 130 KHz is higher than 35 KHz at the same time. Carbaryl elimination was increased by arise frequency and exposure time. After 8 min in photolysis, 100 omitting has been showed. Conclusion: Degradation of carbaryl in high frequency ultrasound wavelength was more than low frequency. Degradation of carbaryl in water, combination of high frequency ultrasound wave length and UV irradiation was considerably more effective than ultrasound or ultraviolet irradiation alone.

Item Type: Article
Keywords: Ultrasound Ultraviolet Degradation Pesticide Carbaryl pesticide decomposition frequency waste water technology reduction atrazine Public, Environmental & Occupational Health Parasitology
Divisions:
Page Range: pp. 47-53
Journal or Publication Title: Iranian Journal of Arthropod-Borne Diseases
Journal Index: ISI
Volume: 4
Number: 1
ISSN: 1735-7179
Depositing User: مهندس مهدی شریفی
URI: http://eprints.bmsu.ac.ir/id/eprint/6779

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