PoplarV1, Main, Exploration, bibRecord, 004263

Foliar exchange of mercury as a function of soil and air mercury concentrations.

Identifieur interne : 004263 ( Main/Exploration ); précédent : 004262; suivant : 004264

Foliar exchange of mercury as a function of soil and air mercury concentrations.

Auteurs : J A Ericksen [États-Unis] ; M S Gustin

Source :

The Science of the total environment [ 0048-9697 ] ; 2004.

RBID : pubmed:15081712

Descripteurs français

KwdFr :
- Air (MeSH), Feuilles de plante (composition chimique), Mercure (analyse), Mercure (composition chimique), Mercure (pharmacocinétique), Polluants du sol (analyse), Polluants du sol (pharmacocinétique), Populus (composition chimique), Populus (physiologie), Racines de plante (composition chimique), Surveillance de l'environnement (MeSH), Volatilisation (MeSH).
MESH :
- analyse : Mercure, Polluants du sol.
- composition chimique : Feuilles de plante, Mercure, Populus, Racines de plante.
- pharmacocinétique : Mercure, Polluants du sol.
- physiologie : Populus.
- Air, Surveillance de l'environnement, Volatilisation.

English descriptors

KwdEn :
- Air (MeSH), Environmental Monitoring (MeSH), Mercury (analysis), Mercury (chemistry), Mercury (pharmacokinetics), Plant Leaves (chemistry), Plant Roots (chemistry), Populus (chemistry), Populus (physiology), Soil Pollutants (analysis), Soil Pollutants (pharmacokinetics), Volatilization (MeSH).
MESH :
- chemical , analysis : Mercury, Soil Pollutants.
- chemical , chemistry : Mercury.
- chemical , pharmacokinetics : Mercury, Soil Pollutants.
- chemistry : Plant Leaves, Plant Roots, Populus.
- physiology : Populus.
- Air, Environmental Monitoring, Volatilization.

Abstract

Previous research has indicated that foliar mercury (Hg) flux is bi-directional, with influence from both atmospheric and soil Hg. This work investigated the role of soil and air Hg concentrations on foliar Hg exchange using a single-plant gas-exchange system. The exchange of Hg vapor with aspen seedlings grown in soil Hg concentrations of 0.03+/-0.01, 5.8+/-0.5, and 12.3+/-1.3 microg g(-1) and exposed to atmospheric Hg concentrations of 2.4+/-0.5, 11.0+/-0.9, and 30.4+/-2.2 ng m(-3) was measured. At background atmospheric Hg concentrations of 2.4 ng m(-3), foliage released Hg at all three soil Hg concentrations and fluxes ranged from 1.6 to 5.5 ng/m(2)/h. At higher atmospheric Hg concentrations (>11 ng m(-3)), net deposition to foliage ranged from -9 to -47 ng/m(2)/h, exhibiting increase uptake with higher air Hg concentrations. Fluxes associated with aspen showed an immediate response to changes in atmospheric Hg concentrations. Compensation points, the air concentration where no net flux of Hg vapor occurred, were 3-4 ng m(-3) in the light and 2-3 ng m(-3) in the dark for trees grown in soils of 0.03 and 6 microg g(-1) Hg content, and 5-6 ng m(-3) in the light and 2.5-3.5 ng m(-3) in the dark for trees grown in 12 microg g(-1) Hg soils.

DOI: 10.1016/j.scitotenv.2003.10.034
PubMed: 15081712

Affiliations:

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Le document en format XML

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<author><name sortKey="Ericksen, J A" sort="Ericksen, J A" uniqKey="Ericksen J" first="J A" last="Ericksen">J A Ericksen</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Air (MeSH)</term>
<term>Environmental Monitoring (MeSH)</term>
<term>Mercury (analysis)</term>
<term>Mercury (chemistry)</term>
<term>Mercury (pharmacokinetics)</term>
<term>Plant Leaves (chemistry)</term>
<term>Plant Roots (chemistry)</term>
<term>Populus (chemistry)</term>
<term>Populus (physiology)</term>
<term>Soil Pollutants (analysis)</term>
<term>Soil Pollutants (pharmacokinetics)</term>
<term>Volatilization (MeSH)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Air (MeSH)</term>
<term>Feuilles de plante (composition chimique)</term>
<term>Mercure (analyse)</term>
<term>Mercure (composition chimique)</term>
<term>Mercure (pharmacocinétique)</term>
<term>Polluants du sol (analyse)</term>
<term>Polluants du sol (pharmacocinétique)</term>
<term>Populus (composition chimique)</term>
<term>Populus (physiologie)</term>
<term>Racines de plante (composition chimique)</term>
<term>Surveillance de l'environnement (MeSH)</term>
<term>Volatilisation (MeSH)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Mercury</term>
<term>Soil Pollutants</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Mercury</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="pharmacokinetics" xml:lang="en"><term>Mercury</term>
<term>Soil Pollutants</term>
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<keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Mercure</term>
<term>Polluants du sol</term>
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<keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Plant Leaves</term>
<term>Plant Roots</term>
<term>Populus</term>
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<keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr"><term>Feuilles de plante</term>
<term>Mercure</term>
<term>Populus</term>
<term>Racines de plante</term>
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<keywords scheme="MESH" qualifier="pharmacocinétique" xml:lang="fr"><term>Mercure</term>
<term>Polluants du sol</term>
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<term>Volatilization</term>
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<term>Surveillance de l'environnement</term>
<term>Volatilisation</term>
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<front><div type="abstract" xml:lang="en">Previous research has indicated that foliar mercury (Hg) flux is bi-directional, with influence from both atmospheric and soil Hg. This work investigated the role of soil and air Hg concentrations on foliar Hg exchange using a single-plant gas-exchange system. The exchange of Hg vapor with aspen seedlings grown in soil Hg concentrations of 0.03+/-0.01, 5.8+/-0.5, and 12.3+/-1.3 microg g(-1) and exposed to atmospheric Hg concentrations of 2.4+/-0.5, 11.0+/-0.9, and 30.4+/-2.2 ng m(-3) was measured. At background atmospheric Hg concentrations of 2.4 ng m(-3), foliage released Hg at all three soil Hg concentrations and fluxes ranged from 1.6 to 5.5 ng/m(2)/h. At higher atmospheric Hg concentrations (>11 ng m(-3)), net deposition to foliage ranged from -9 to -47 ng/m(2)/h, exhibiting increase uptake with higher air Hg concentrations. Fluxes associated with aspen showed an immediate response to changes in atmospheric Hg concentrations. Compensation points, the air concentration where no net flux of Hg vapor occurred, were 3-4 ng m(-3) in the light and 2-3 ng m(-3) in the dark for trees grown in soils of 0.03 and 6 microg g(-1) Hg content, and 5-6 ng m(-3) in the light and 2.5-3.5 ng m(-3) in the dark for trees grown in 12 microg g(-1) Hg soils.</div>
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<Month>May</Month>
<Day>25</Day>
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<Title>The Science of the total environment</Title>
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<Abstract><AbstractText>Previous research has indicated that foliar mercury (Hg) flux is bi-directional, with influence from both atmospheric and soil Hg. This work investigated the role of soil and air Hg concentrations on foliar Hg exchange using a single-plant gas-exchange system. The exchange of Hg vapor with aspen seedlings grown in soil Hg concentrations of 0.03+/-0.01, 5.8+/-0.5, and 12.3+/-1.3 microg g(-1) and exposed to atmospheric Hg concentrations of 2.4+/-0.5, 11.0+/-0.9, and 30.4+/-2.2 ng m(-3) was measured. At background atmospheric Hg concentrations of 2.4 ng m(-3), foliage released Hg at all three soil Hg concentrations and fluxes ranged from 1.6 to 5.5 ng/m(2)/h. At higher atmospheric Hg concentrations (>11 ng m(-3)), net deposition to foliage ranged from -9 to -47 ng/m(2)/h, exhibiting increase uptake with higher air Hg concentrations. Fluxes associated with aspen showed an immediate response to changes in atmospheric Hg concentrations. Compensation points, the air concentration where no net flux of Hg vapor occurred, were 3-4 ng m(-3) in the light and 2-3 ng m(-3) in the dark for trees grown in soils of 0.03 and 6 microg g(-1) Hg content, and 5-6 ng m(-3) in the light and 2.5-3.5 ng m(-3) in the dark for trees grown in 12 microg g(-1) Hg soils.</AbstractText>
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Foliar exchange of mercury as a function of soil and air mercury concentrations.

Foliar exchange of mercury as a function of soil and air mercury concentrations.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki