(bromoform): revised UV absorption spectrum, atmospheric lifetime and ozone depletion potential

The very short - lived ozone depleting substance CHBr 3 ( bromoform ) : Revised UV absorption spectrum , atmospheric lifetime and ozone depletion potential

Terrestrial and Marine Sources of Methyl Iodide in the Rural Southeast

Methyl iodide (CH3I) is the most abundant organo-iodine compound in the atmosphere and is influential in aerosol formation and tropospheric ozone depletion. It is used in the production of pesticides and pharmaceuticals and is also produced biogenically by marine algae and terrestrial vegetation and soils. Short and long-term methyl iodide exposure via inhalation can be harmful to humans. In or...

Volatile anaesthetics and the atmosphere: atmospheric lifetimes and atmospheric effects of halothane, enflurane, isoflurane, desflurane and sevoflurane.

The atmospheric lifetimes of the halogenated anaesthetics halothane, enflurane, isoflurane, desflurane and sevoflurane with respect to reaction with the hydroxyl radical (OH.) and UV photolysis have been determined from observations of OH. reaction kinetics and UV absorption spectra. Rate coefficients for the reaction with OH radicals for all halogenated anaesthetics investigated ranged from 0....

The UV and visible spectra of chlorine peroxide : constraining the atmospheric photolysis rate

The photolysis of chlorine peroxide (ClOOCl) is a key chemical step in the depletion of polar stratospheric ozone. As such, precise measurements of the absorption cross sections for ClOOCl are required. In this paper we provide two critical pieces of laboratory data with which to constrain the rate of ozone depletion. First, we provide an optically pure ClOOCl spectrum in the photolytically imp...

Marine sources of bromoform in the global open ocean – global patterns and emissions

Bromoform (CHBr3) is one important precursor of atmospheric reactive bromine species that are involved in ozone depletion in the troposphere and stratosphere. In the open ocean bromoform production is linked to phytoplankton that contains the enzyme bromoperoxidase. Coastal sources of bromoform are higher than open ocean sources. However, open ocean emissions are important because the transfer ...