<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Natural Occurrence of Volatile Mono-/Polyhalogenated amd Aromatic/Heteroaromatic Hydrocarbons in Hypersaline Environments"^^ . "Volatile compounds are important substances for tropospheric and stratospheric chemistry.\r\nAnthropogenic sources of specific gases causing greenhouse effect, stratospheric ozone\r\ndepletion, groundlevel ozone formation and aerosol formation are well known. Additionally,\r\nmany natural sources, like oceans, wetlands and forests, have been investigated and assessed\r\nfor their atmospheric impact previously.\r\nWhile emissions from natural sources are often affiliated to biotic mechanisms, model\r\nreactions demonstrated also the importance of abiotic reactions. As such furan formation from\r\ncatechol was successfully accomplished in this work using Fenton chemistry with a well\r\ndefined biomimetic bispidine Fe2+ complex. Furthermore, abiotic formation of ethylfuran\r\nfrom ethylcatechol was demonstrated.\r\nThe work in hand also deals with the amalgamation of model reaction and the natural release\r\nof volatile compounds from Western Australian salt lakes and the Dead Sea.\r\nOn the one hand, Fe2+ was determined as the predominant active iron species in most natural\r\nhypersaline ecosystems. On the other hand, the release of several aromatic and nonaromatic\r\nhydrocarbons, furanoic compounds, sulfur and selenide containing compounds and\r\nhalogenated compounds was investigated in correlation with geochemical parameters like pH,\r\niron and organic carbon content. Benzene, toluene, ethylbenzene and xylene emissions,\r\nnormally attributed to anthropogenic sources, correlated significantly with the iron content of\r\nAustralian salt lake sediments demonstrating their genuine natural abundance. The same was\r\nobserved for furan and hitherto mostly unnoticed n-alkyl chlorides with a C3-C8 carbon\r\nstructure. Furthermore, a connection between emissions of methylfurans and their\r\nhomologoues methylthiophenes was observed indicating a mutual precursor and similar\r\nformation mechanism in the soils/sediments.\r\nAside from various known natural chlorinated, brominated and iodinated compounds, new\r\ncompounds were identified like 3-chlorofuran. Additionally, natural tetrachloromethane\r\nformation in acidic salt lakes was postulated supported by various results.\r\nRelevance of these compounds for the atmospheric chemistry was assessed with regard to\r\nultrafine particle formation in Western Australia and reactive IO/BrO over the Dead Sea."^^ . "2014" . . . . . . . "Torsten"^^ . "Krause"^^ . "Torsten Krause"^^ . . . . . . "Natural Occurrence of Volatile Mono-/Polyhalogenated amd Aromatic/Heteroaromatic Hydrocarbons in Hypersaline Environments (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Natural Occurrence of Volatile Mono-/Polyhalogenated amd Aromatic/Heteroaromatic Hydrocarbons in Hypersaline Environments (PDF)"^^ . . . "Dissertation Torsten Krause.pdf"^^ . . . "Natural Occurrence of Volatile Mono-/Polyhalogenated amd Aromatic/Heteroaromatic Hydrocarbons in Hypersaline Environments (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Natural Occurrence of Volatile Mono-/Polyhalogenated amd Aromatic/Heteroaromatic Hydrocarbons in Hypersaline Environments (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Natural Occurrence of Volatile Mono-/Polyhalogenated amd Aromatic/Heteroaromatic Hydrocarbons in Hypersaline Environments (Other)"^^ . . . . . . "small.jpg"^^ . . . "Natural Occurrence of Volatile Mono-/Polyhalogenated amd Aromatic/Heteroaromatic Hydrocarbons in Hypersaline Environments (Other)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #16746 \n\nNatural Occurrence of Volatile Mono-/Polyhalogenated amd Aromatic/Heteroaromatic Hydrocarbons in Hypersaline Environments\n\n" . "text/html" . . . "550 Geowissenschaften"@de . "550 Earth sciences"@en . .