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Description
| - Radioisotopes carbon 14 and chlorine 36 were used to elucidate the environmental role of trichloroacetic acid (TCA) formerly taken to be a herbicide and a secondary air pollutant with phytotoxic effects. However, use of 14C-labeling posed again known analytical problems, especially in TCA extraction from the sample matrix. Therefore--after evaluation of available methods--a new procedure using decarboxylation of [1,2-14C]TCA combined with extraction of the resultant 14C-chloroform with a non-polar solvent and its subsequent radiometric measurement was developed. The method solves previous difficulties and permits an easy determination of amounts between 0.4 and 20 kBq (10 - 500 ng g(-1)) of carrier-less [1,2-14C]TCA in samples from environmental investigations. The procedure is, however, not suitable for direct [36Cl]TCA determination in chlorination studies with 36Cl.
- Radioisotopes carbon 14 and chlorine 36 were used to elucidate the environmental role of trichloroacetic acid (TCA) formerly taken to be a herbicide and a secondary air pollutant with phytotoxic effects. However, use of 14C-labeling posed again known analytical problems, especially in TCA extraction from the sample matrix. Therefore--after evaluation of available methods--a new procedure using decarboxylation of [1,2-14C]TCA combined with extraction of the resultant 14C-chloroform with a non-polar solvent and its subsequent radiometric measurement was developed. The method solves previous difficulties and permits an easy determination of amounts between 0.4 and 20 kBq (10 - 500 ng g(-1)) of carrier-less [1,2-14C]TCA in samples from environmental investigations. The procedure is, however, not suitable for direct [36Cl]TCA determination in chlorination studies with 36Cl. (en)
- V článku je přehledně ukázána role chloru v lesním ekosystému. Chlorid není inertní, ale reaguje především za účasti mikroorganismů s půdní organickou hmotou za vzniku chlorovaných látek, kupř. chloroctových kyselin (CAA). Je presentován jejich vznik v lesní půdě spolu s jejich mikrobiální degradací, CAA tedy představují degradační půdní intermediáty. V lesní půdě dochází rovněž k chloraci fulvokyselin a dalších huminových látek i jejich dehalogenaci. (cs)
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Title
| - A Chlorine-36 and Carbon-14 Study of the Role of Chlorine in the Forest Ecosystem.
- A Chlorine-36 and Carbon-14 Study of the Role of Chlorine in the Forest Ecosystem. (en)
- Studie role chloru v lesním ekosystému za užití chloru 36 a uhlíku 14. (cs)
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skos:prefLabel
| - A Chlorine-36 and Carbon-14 Study of the Role of Chlorine in the Forest Ecosystem.
- A Chlorine-36 and Carbon-14 Study of the Role of Chlorine in the Forest Ecosystem. (en)
- Studie role chloru v lesním ekosystému za užití chloru 36 a uhlíku 14. (cs)
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skos:notation
| - RIV/00020702:_____/07:8P007642!RIV08-GA0-00020702
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(GA522/02/0874), P(GA526/05/0636), Z(AV0Z50380511)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/00020702:_____/07:8P007642
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - [14C]-synthesis; labeled compounds; tetrahydrocyclopenta[b]indol-3-yl acetic acid (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - JOURNAL OF LABELLED COMPOUNDS & RADIOPHARMACEUTICALS
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Schröder, P.
- Gryndler, M.
- Uhlířová, Hana
- Matucha, M.
- Forczek, S.
- Rohlenová, J.
- Fuksová, K.
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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is http://linked.open...avai/riv/vysledek
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