Фотоинициированная деструкция α-циперметрина
Електронний архів E-archive DonNTU – (Electronic archive Donetsk National Technical University)
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| Title |
Фотоинициированная деструкция α-циперметрина
PHOTOINITIATED DEGRADATION OF α CYPERMETHRIN |
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| Creator |
Шершенюк, И.А.
Одарюк, И.Д. Шендрик, А.Н. |
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| Subject |
пиретроиды
α-циперметрин фотодеструкция газовая хроматография pyrethroids α-cypermethrin photodecomposition gas chromatography |
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| Description |
Cypermethrin is a synthetic pyrethroid insecticide commonly used both indoors and outdoors. In the natural environment, cypermethrin can be degraded through several possible processes, including photodegradation, biodegradation and hydrolysis. Photodegradation is the most common degradation process in the environment in comparison with biodegradation and hydrolysis. However, cypermethrin photodegradation process, mechanisms and final products are not well known yet. A photoinitiated degradation of α-cypermethrin in the ethanol at 25°С was studied. In order to investigate this process pyrethroid photodegradation were caried out under simulated conditions with using of mercury lamp (300 W power) as a source of UV light source. α-cypermethrin solutions in the ethanol were irradiated for different periods of time. Kinetic parameters of the process and main products of the α-cypermethrin photoinitiated degradation were established with gas chromatography and gas chromatography-mass spectrometry. Obtained results indicate that the photodegradation of α-cypermethrin in the ethanol follows first order kinetics. 3-phenoxy benzaldehyde and 2-(3-phenoxyphenyl) propanoic acid were found to be the major products of photodegradation. A plausible mechanism was discussed in order to provide the explanation of this process.This study supports for a better understanding of aspects of pyretroids degradation in the environment. Исследована кинетика фотоинициированной деструкции α-циперметрина в этиловом спирте при 25°С. Определены кинетические параметры данного процесса. Изучен состав продуктов фотоинициированного распада α-циперметрина. |
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| Date |
2014-04-15T17:06:30Z
2014-04-15T17:06:30Z 2014 |
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| Type |
Article
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| Identifier |
УДК 544.526.2:632.951.2+543.544.3
http://ea.donntu.edu.ua/handle/123456789/26010 |
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| Language |
other
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| Publisher |
Наукові праці ДонНТУ. Серія: Хімія і хімічна технологія. - 2014. - Вип. 2(23). - С. 137-141
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