photochemical reactions


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photochemical reactions

Chemical reactions which are initiated by a particular wavelength of light.
References in periodicals archive ?
Photochemical smog was derived from coal emissions, vehicular emissions, industrial emissions, forest and agricultural fires and photochemical reactions of these emissions, he said.
Infrared radiation, corresponding to low-frequency molecular vibrations, can also bring about photochemical reactions by multi-photon absorption.
Thus, the rate of O2 evolution can indicate the activity of photochemical reactions and electron transport in PSII.
Despite the fact that Titan has been located much further from the Sun than the Earth and that radiation flux coming from the Sun to the moon was 100 times less, the intensity of UV rays was enough to spur photochemical reactions in the upper layers of Titan's atmosphere.
And just as chemists have sought the underlying mechanisms responsible for thermochemical or photochemical reactions, their efforts are dedicated to unravelling the mysteries of mechanical action.
Troposphere ozone rises from two basic processes: (i) tropospheric-stratospheric exchange that causes the transport of stratospheric air, rich in ozone, into the troposphere; and (ii) production of ozone from photochemical reactions occurring within the troposphere.
This energy determines our climates, causes winds, ocean currents, and rainfall, and produces photochemical reactions whereby a portion of the energy is stored in plants.
After poisoning in animal with this toxicant lentadenes causes cholestasis which undergoes photochemical reactions on exposure to sunlight, which causes photosensitization and associated skin lesions.
In order to limit the size of the volume, care is taken to reduce or avoid overlap with publications reviewing neighboring specialties such as photochemical reactions and biosynthesis.
Predicting tropospheric ozone concentrations is difficult because tropospheric ozone is not emitted directly into the atmosphere but formed in the atmosphere by photochemical reactions involving nitrogen oxides (NOx) and volatile organic compounds (VOC) emitted from a range of sources.
In original photochemical reactions, as the electron donor, the excited RC pigments transfer the electrons to electron acceptor to realize the charge separation and then leave behind "holes".

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