Study of the Photodegradation Kinetics and Pathways of Hexaflumuron in Liquid Media
Lu, C; Yin, X; Liu, X; Wang, M
| HERO ID | 2363256 |
|---|---|
| In Press | No |
| Year | 2014 |
| Title | Study of the Photodegradation Kinetics and Pathways of Hexaflumuron in Liquid Media |
| Authors | Lu, C; Yin, X; Liu, X; Wang, M |
| Journal | Photochemistry and Photobiology |
| Volume | 90 |
| Issue | 6 |
| Page Numbers | 1219-1223 |
| Abstract | Hexaflumuron, one of the benzoylphenylurea insect growth regulators, can be leached into surface water and thus having a potential impact on aquatic organisms. In this study, the photodegradation processes of hexaflumuron under high-pressure mercury lamp irradiation were assessed. The photodegradation kinetics were studied, as were the effects of pH, different light sources, organic solvents and environmental substances, including nitrate ions (NO3 (-) ), nitrite ions (NO2 (-) ), ferrous ions (Fe(2+) ), ferric ions (Fe(3+) ), humic acid, sodium dodecyl sulfate (SDS) and hydrogen peroxide (H2 O2 ). Three photodegradation products in methanol were identified by gas chromatography-mass spectrometry (GC-MS). In general, the degradation of hexaflumuron followed first-order kinetics. In the four media studied, the photodegradation rate order was n-hexane > methanol > ultrapure water > acetone. Faster degradation was observed under high-pressure mercury lamp irradiation than under xenon lamp irradiation. The pH had a considerable effect, with the most rapid degradation occurring at pH 5.0. The photodegradation rate of hexaflumuron was promoted in the presence of NO3 (-) , NO2 (-) , Fe(2+) , humic acid, SDS and H2 O2 , but inhibited by Fe(3+) . Moreover, the presumed photodegradation pathway was proposed to be the cleavage of the urea linkage. |
| Doi | 10.1111/php.12314 |
| Pmid | 25039252 |
| Wosid | WOS:000345217800003 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Scopus URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84915773799&doi=10.1111%2fphp.12314&partnerID=40&md5=5173f5a9ef3be72a1c80cef2f8a29ec0 |
| Is Public | Yes |
| Language Text | English |