Detection of volatile organometal chloride species in model atmosphere above seawater and sediment

Download
  1. Get@NRC: Detection of volatile organometal chloride species in model atmosphere above seawater and sediment (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1021/es015666n
AuthorSearch for: ; Search for:
TypeArticle
Journal titleEnvironmental Science and Technology
ISSN0013936X
Volume36
IssueMarch 15, 6
Pages11981201; # of pages: 4
AbstractThe principal route for release of organometallic species into the atmosphere is currently considered to be the biological or chemical formation of saturated volatile compounds such as dimethylmercury, metal hydrides, etc. Model experiments conducted in our laboratory point to the release of extremely toxic, volatile organotin, -lead, -mercury, and -arsenic species that have been detected as the chlorides in the gas phase above seawater and sediment mixtures. As the sediment was sterilized prior to the analytical study, any bioformation of volatile metal species was excluded. The most probable account of these observations is the naturally occurring formation of metal chlorides, fueled by the abundance of chloride ion (or other halides) present in seawater and many other natural environments. This raises the suggestion that the release of toxic trace elements to the atmosphere by environmental processes may be seriously underestimated. A conservative projection, based on laboratory data, suggests that the emission of butyltin into the atmosphere may reach as high as 150 ng/m2 of water/yr from a polluted marine environment, suggesting a very significant level of release of butyltin from seawater at the global level. For the sampling and determination of volatile metal species, solid-phase microextraction combined with inductively coupled plasma time-of-flight mass spectrometry has been used. This new analytical system is capable of detection of semivolatile, thermally unstable compounds such as the class encompassing metal halide species.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10300417
NRC number114
NPARC number8899571
Export citationExport as RIS
Report a correctionReport a correction
Record identifier76ebe28e-4c63-44fe-98a4-e5f466fbc17c
Record created2009-04-22
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)