Chloride – a precursor in the formation of volatile organochlorines by forest plants?

0323587 - ÚEB 2009 RIV GB eng J - Journal Article
Laturnus, F. - Matucha, Miroslav
Chloride – a precursor in the formation of volatile organochlorines by forest plants?
[Chlorid – prekurzor tvorby těkavých chlorovaných organických látek lesními rostlinami?]
Journal of Environmental Radioactivity. Roč. 99, č. 1 (2008), s. 119-125. ISSN 0265-931X. E-ISSN 1879-1700
R&D Projects: GA ČR GA526/05/0636
Institutional research plan: CEZ:AV0Z50380511
Keywords : 36Chloride * Volatile Organochlorines * VOCl
Subject RIV: DF - Soil Science
Impact factor: 1.114, year: 2008

Two plants, a fern (Athyrium filix-femina) and a moss (Polytrichum commune Hedw.), both commonly occuring in Northern Temperate forests, were exposed in a laboratory study to a solution of Cl-36-chloride. The uptake of Cl-36-chloride by the plants was investigated and the emission of volatile chlorine 36 by the plants was determined. Furthermore, speciation of the emitted volatile organochlorine compounds (VOCls) was investigated. For the fern and the moss a rapid uptake of Cl-36-chloride was observed within a 1-h exposure period. The uptake rates for the fern and the moss, respectively, were 16 mu g Cl-36-chloride g(-1) fresh weight (FW) h(-1) and 3.0 mu g Cl-36-chloride g(-1) FW h(-1), respectively. The study also suggested that after uptake by the plants Cl-36-Chloride is incorporated into VOCls, which were emitted by the plants into the atmosphere. Speciation analysis of the VOCls revealed the emission of chloroform, tetrachloromethane and 1,1,1-trichloroethane.

Dvě rostliny, kapradina (Athyrium filix-femina) a mech (Polytrichum commune Hedw.), obě vyskytující se v lesích severní části mírného pásma, byly v laboratorní studii vystaveny roztoku 36Cl-chloridu. Byl zkoumán jeho příjem kořeny, zjištěna emise těkavých 36Cl-produktů oběmi rostlinami a provedena jejich speciace. Po rychlém příjmu chloridu (již během 1 hod) docházelo k emisi těkavých chlorovaných uhlovodíků do atmosféry, určen byl chloroform, tetrachlormethan a 1,1,1-trichlorethan.
Permanent Link: http://hdl.handle.net/11104/0171498