Environmental effects of ozone depletion and its interactions with climate change: Progress report, 2005

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doi:10.1039/b515670j

Cited by 22 publications

(2 citation statements)

References 170 publications

(179 reference statements)

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“…Such increases in UV-B radiation have been measured at various locations and have been extensively discussed in previous assessment reports. 24,[59][60][61][62] Over some regions, direct correlations between ozone and UV-B radiation could not be detected in measurements because they were masked by other factors that are also strong attenuators of UV-B radiation, as discussed in section 3. The changes in ozone that have occurred over the past decades resulted in changes in UV-B radiation at Earth's surface and in surface climate, with consequences for human health, marine and terrestrial ecosystems, as well as in tropospheric chemistry, biogeochemical cycles, and materials.…”

Section: Effects Of Changes In Ozone On Uv Radiation and Climatementioning

confidence: 99%

Ozone—climate interactions and effects on solar ultraviolet radiation

Bais

Bernhard

McKenzie

et al. 2019

Photochem Photobiol Sci

139

149

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Section: Effects Of Changes In Ozone On Uv Radiation and Climatementioning

confidence: 99%

Ozone—climate interactions and effects on solar ultraviolet radiation

Bais

Bernhard

McKenzie

et al. 2019

Photochem Photobiol Sci

139

149

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“…The photochemistry of organo-halides 40 is of strong interest in atmospheric chemistry due to their ozone depletion ability in the stratosphere. [41][42][43] In particular, dihalomethanes have been recognized as potentially important since they are naturally emitted into the atmosphere as bio-products of several terrestrial and marine living beings [44][45][46][47][48][49] with an apparently puzzling chemistry. [50][51][52][53] Dihalomethanes are used in many synthesis reactions: ultraviolet photolysis of CH 2 I 2 and CHI 3 in solutions is widely used for photocyclopropanation of alkanes via CH 2 I-I or CHI 2 -I.…”

Section: Introductionmentioning

confidence: 99%

Transient isomers in the photodissociation of bromoiodomethane

Marcellini

Nasedkin

Zietz

et al. 2018

The Journal of Chemical Physics

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The photochemistry of halomethanes is fascinating for the complex cascade reactions toward either the parent or newly synthesized molecules. Here, we address the structural rearrangement of photodissociated CHIBr in methanol and cyclohexane, probed by time-resolved X-ray scattering in liquid solution. Upon selective laser cleavage of the C-I bond, we follow the reaction cascade of the two geminate geometrical isomers, CHI-Br and CHBr-I. Both meta-stable isomers decay on different time scales, mediated by solvent interaction, toward the original parent molecule. We observe the internal rearrangement of CHBr-I to CHI-Br in cyclohexane by extending the time window up to 3 μs. We track the photoproduct kinetics of CHBr-I in methanol solution where only one isomer is observed. The effect of the polarity of solvent on the geminate recombination pathways is discussed.

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Improved Comet assay for the assessment of UV genotoxicity in Mediterranean sea urchin eggs

Nahon

Charles

Pruski

2008

Environ and Mol Mutagen

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Gametes and embryos of broadcast spawners are exposed to a wide range of chemical and physical stressors which may alone, or in conjunction, have serious consequences on reproductive outcomes. In this study, two Mediterranean echinoid species, Paracentrotus lividus and Sphaerechinus granularis, were chosen as models to study the genotoxicity of UV radiation (UVR) on the eggs of broadcast-spawning marine invertebrates. The single cell gel electrophoresis, or Comet assay, was successfully adapted to assess DNA strand breakage in sea urchin eggs. The results demonstrated that the genetic material of sea urchin eggs is susceptible to environmentally realistic UV exposure. The induction of DNA damage in the irradiated unfertilized eggs suggests that the previously described defense mechanisms in sea urchin eggs do not completely protect the egg's DNA against UV toxicity. Taken together, our results suggest that UV-impairment of the genetic integrity of the eggs might have a role in postfertilization failures and abnormal embryonic development. Although both species were vulnerable to UVR, embryonic development was less dramatically impaired in P.Lividus. This observation supports the postulation that species inhabiting shallower environments possess more efficient mechanisms to overcome UV-induced DNA alterations. The present demonstration of the utility and sensitivity of the Comet assay to evaluate DNA integrity in eggs from marine invertebrates opens new perspectives for monitoring the long-term effects of environmental exposure on populations and for the routine screening of substances for genotoxicity in marine systems.

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Environmental effects of ozone depletion and its interactions with climate change: Progress report, 2005

Cited by 22 publications

References 170 publications

Ozone—climate interactions and effects on solar ultraviolet radiation

Ozone—climate interactions and effects on solar ultraviolet radiation

Transient isomers in the photodissociation of bromoiodomethane

Improved Comet assay for the assessment of UV genotoxicity in Mediterranean sea urchin eggs

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