Laturnus Frank, Matucha Miroslav
Centre for Climate Science and Policy Research, Linköping University, 60174 Norrköping, Sweden.
J Environ Radioact. 2008 Jan;99(1):119-25. doi: 10.1016/j.jenvrad.2007.07.008. Epub 2007 Sep 11.
Two plants, a fern (Athyrium filix-femina) and a moss (Polytrichum commune Hedw.), both commonly occurring in Northern Temperate forests, were exposed in a laboratory study to a solution of (36)Cl-chloride. The uptake of (36)Cl-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 (36)Cl-chloride was observed within a 1-h exposure period. The uptake rates for the fern and the moss, respectively, were 16 microg (36)Cl-chloride g(-1) fresh weight (FW) h(-1) and 3.0 microg (36)Cl-chloride g(-1) FW h(-1), respectively. The study also suggested that after uptake by the plants (36)Cl-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.
在一项实验室研究中，将两种常见于北温带森林的植物——一种蕨类植物（欧洲蹄盖蕨）和一种苔藓（大金发藓）暴露于含有³⁶Cl⁻氯化物的溶液中。研究了植物对³⁶Cl⁻氯化物的吸收情况，并测定了植物对挥发性³⁶Cl的释放量。此外，还对释放出的挥发性有机氯化合物（VOCls）进行了形态分析。对于蕨类植物和苔藓，在1小时的暴露期内观察到它们对³⁶Cl⁻氯化物的快速吸收。蕨类植物和苔藓的吸收速率分别为16微克³⁶Cl⁻氯化物/克鲜重（FW）·小时⁻¹和3.0微克³⁶Cl⁻氯化物/克FW·小时⁻¹。该研究还表明，植物吸收³⁶Cl⁻氯化物后会将其整合到VOCls中，而VOCls会由植物释放到大气中。对VOCls的形态分析揭示了氯仿、四氯化碳和1,1,1 - 三氯乙烷的释放。
