Investigations of the Role of Chloroacetic Acids in Forest Ecosystems Using Carbon 14 and Chlorine 36.

Kód výsledku v IS VaVaI

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Nalezeny alternativní kódy

RIV/61389030:_____/03:56033110

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Investigations of the Role of Chloroacetic Acids in Forest Ecosystems Using Carbon 14 and Chlorine 36.

Popis výsledku v původním jazyce

Chloroacetic acids (CAAs), especially trichloroacetic acid (TCA), were considered to be of solely anthropogenic origin (e.g. formed by atmospheric photooxidation of Ca-chlorocarbons) and as such - secondary air pollutants with herbicidal properties - tobe one of the stress factors affecting conifers1. Recently, another source of CAAs (or TCA, resp.) has been identified: humic substances in soil which may be degraded by microbial processes to yield CAAs and chloroform2. Our previous studies on TCA in the Norway spruce/soil-system have elucidated uptake, translocation and fate of TCA in the tree to some degree and demonstrated the important role of soil in the plant/soil-system1'3'4. However, the new aspect, viz. the formation of CAAs in soil, has considerably changed the situation in the research of the contribution of CAAs to forest decline. If CAAs are continuously produced and delivered from the soil to the roots, trees are exposed to CAA stress also from biogenic sources. On the ot

Název v anglickém jazyce

Investigations of the Role of Chloroacetic Acids in Forest Ecosystems Using Carbon 14 and Chlorine 36.

Popis výsledku anglicky

Chloroacetic acids (CAAs), especially trichloroacetic acid (TCA), were considered to be of solely anthropogenic origin (e.g. formed by atmospheric photooxidation of Ca-chlorocarbons) and as such - secondary air pollutants with herbicidal properties - tobe one of the stress factors affecting conifers1. Recently, another source of CAAs (or TCA, resp.) has been identified: humic substances in soil which may be degraded by microbial processes to yield CAAs and chloroform2. Our previous studies on TCA in the Norway spruce/soil-system have elucidated uptake, translocation and fate of TCA in the tree to some degree and demonstrated the important role of soil in the plant/soil-system1'3'4. However, the new aspect, viz. the formation of CAAs in soil, has considerably changed the situation in the research of the contribution of CAAs to forest decline. If CAAs are continuously produced and delivered from the soil to the roots, trees are exposed to CAA stress also from biogenic sources. On the ot

Druh

D - Stať ve sborníku

CEP obor

CE - Biochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA522%2F02%2F0874" target="_blank" >GA522/02/0874: Role kyselin chloroctových v životním prostředí: kyselina trichloroctová v systému smrk ztepilý/půda</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

The Synthesis and Applications of Istopes and Isotopically Labeled Compounds.

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

95

Název nakladatele

International Isotope Society

Místo vydání

N/A

Místo konání akce

Boston, Massachusets [US]

Datum konání akce

1. 6. 2003

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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