Sediments of salt lakes as a new source of volatile highly chlorinated C1/C2 hydrocarbons

Details Sediments of salt lakes as a new source of volatile highly chlorinated C1/C2 hydrocarbons Sediments of salt lakes as a new source of volatile highly chlorinated C1/C2 hydrocarbons

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3201401w&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 1, CiteID L01401

Physics

2

Atmospheric Composition And Structure: Pollution: Urban And Regional (0305, 0478, 4251), Global Change: Biogeochemical Cycles, Processes, And Modeling (0412, 0414, 0793, 4805, 4912), Hydrology: Desertification, Hydrology: Limnology (0458, 4239, 4942), Hydrology: Surface Water Quality

Scientific paper

It is shown for the first time that the volatile highly chlorinated C2 hydrocarbons (VCHCs) trichloroethene (TRI; C2HCl3), tetrachloroethene (PER; C2Cl4) and methyl chloroform (MC; C2H3Cl3), but also C1 hydrocarbons tetrachloromethane and chloroform can be naturally formed in the sediment of salt lakes (ssl). Archaic halobacteria appear to play a key role in the microbial formation involved. TRI, PER and MC can be transformed into trichloroacetic acid (TCA) in the atmosphere. TRI and PER can also be metabolised into TCA following uptake by plants. Already considerably phytotoxic by itself, TCA's phytotoxicity is exacerbated if the vegetation concerned is simultaneously exposed to drought-stress. TRI and PER, emitted by these newly identified natural sources, can accelerate desertification in semi-arid and arid climate zones in consequence of the destabilisation of vegetation by its phytotoxic metabolite TCA.

Affiliated with

Also associated with

No associations

Rating

Sediments of salt lakes as a new source of volatile highly chlorinated C1/C2 hydrocarbons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Sediments of salt lakes as a new source of volatile highly chlorinated C1/C2 hydrocarbons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sediments of salt lakes as a new source of volatile highly chlorinated C1/C2 hydrocarbons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-901918