Quantum Yield for the Aqueous Photochemical Degradation of Chlorantraniliprole and Simulation of Its Environmental Fate in a Model California Rice Field

2020 ◽  
Vol 39 (10) ◽  
pp. 1929-1935
Author(s):  
Zachary C. Redman ◽  
Cort Anastasio ◽  
Ronald S. Tjeerdema
Keyword(s):  
Quantum Yield ◽  
Rice Field ◽  
Environmental Fate ◽  
Photochemical Degradation

scholarly journals Degradation of octylbenzene sulfonate photoinduced by iron(III) aquacomplexes: Evidence for the fragmentation of the alkyl chain

2005 ◽  
Vol 7 (2) ◽  
pp. 71-78 ◽  
Author(s):  
Nadra Debbache ◽  
Gilles Mailhot ◽  
Kamel Djebbar ◽  
Bernadette Lavedrine ◽  
Michèle Bolte
Keyword(s):  
Electron Transfer ◽  
Quantum Yield ◽  
Aromatic Ring ◽  
Alkyl Chain ◽  
Solar Light ◽  
Complete Disappearance ◽  
Photochemical Degradation

The degradation of octylbenzene sulfonate (OBS) photoinduced by iron(III) aquacomplexes was investigated upon irradiation at 365 nm and by solar light. The photochemical degradation appears to be due toHO•radicals arising from the electron transfer inFe(OH)2+. If oxygen does not affect the initial quantum yield of OBS degradation, it is necessary to pursue the reaction up to, first the complete disappearance of OBS and secondly OBS mineralization. The nature of the major photoproducts gives evidence for a competitive attack ofHO•radicals on the alkyl chain resulting in a shortening of the chain. Among the possible sites on the chain, hydrogen on the carbon inαposition with respect to the aromatic ring was the main point of attack with the formation of 4-acetylbenzene sulfonate and 4-carboxylicbenzene sulfonate.

Photochemical degradation of imazosulfuron under simulated California rice field conditions

2015 ◽  
Vol 72 (6) ◽  
pp. 1117-1123 ◽  
Author(s):  
Caitlin C Rering ◽  
Monica A Gonzalez ◽  
Megan R Keener ◽  
David B Ball ◽  
Ronald S Tjeerdema
Keyword(s):  
Rice Field ◽  
Field Conditions ◽  
Photochemical Degradation

Environmental Fate of SYP-1924 Residues in Rice Field

2010 ◽  
Vol 84 (6) ◽  
pp. 775-778 ◽  
Author(s):  
Xiaodan Zhu ◽  
Chunhong Jia ◽  
Min He ◽  
Pingzhong Yu ◽  
Li Chen ◽  
...  
Keyword(s):  
Rice Field ◽  
Environmental Fate

scholarly journals Health effects, environmental impacts, and photochemical degradation of selected surfactants in water

2004 ◽  
Vol 6 (3) ◽  
pp. 115-125 ◽  
Author(s):  
Sarah Hatfield Venhuis ◽  
Mehrab Mehrvar
Keyword(s):  
Environmental Impact ◽  
Polychlorinated Biphenyls ◽  
Photocatalytic Degradation ◽  
Linear Alkylbenzene Sulfonate ◽  
Environmental Fate ◽  
Photochemical Degradation ◽  
Linear Alkylbenzene ◽  
Cleaning Agents ◽  
Alkylbenzene Sulfonate ◽  
Treatment Alternatives

Surfactants are depended upon worldwide as cleaning agents. Their usage in such large quantities means that their waste and the potential for pollution are high. Many studies have been done over the last three decades encompassing treatment, alternatives to non-biodegradable surfactants, and the environmental impact. It has been found that although certain surfactants may not be directly toxic, when their concentrations are high in soil, they can act as agents to release toxic pollutants such as polychlorinated biphenyls (PCBs). The focus of this study is to review recent advances in the toxicology, the environmental fate, and the treatment of selected surfactants. In addition, photolytic and photocatalytic degradation of linear alkylbenzene sulfonate in water is presented.

Size-dependent emission of a dipole coupled to a metal nanoparticle

MRS Advances ◽  
2020 ◽  
Vol 5 (62) ◽  
pp. 3315-3325
Author(s):  
Viktoriia Savchuk ◽  
Arthur R. Knize ◽  
Pavlo Pinchuk ◽  
Anatoliy O. Pinchuk
Keyword(s):  
Numerical Analysis ◽  
Quantum Yield ◽  
Electric Dipole ◽  
Incident Radiation ◽  
Metal Nanoparticle ◽  
Plasmonic Nanoparticle ◽  
Size Dependent ◽  
Emission Enhancement ◽  
Electric Dipoles

AbstractWe present a systematic numerical analysis of the quantum yield of an electric dipole coupled to a plasmonic nanoparticle. We observe that the yield is highly dependent on the distance between the electric dipole and the nanoparticle, the size and permittivity of the nanoparticle, and the wavelength of the incident radiation. Our results indicate that enhancement of the quantum yield is only possible for electric dipoles coupled to a nanoparticle with a radius of 20 nm or larger. As the size of the nanoparticle is increased, emission enhancement occurs at wavelengths dependent on the coupling distance.

The Environmental Fate and Ecotoxicity of Glyphosate

2018 ◽  
Vol 29 (6) ◽  
pp. 266-269 ◽  
Author(s):  
Robin Blake ◽  
Ken Pallett
Keyword(s):  
Environmental Fate
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