Analysis of tree rings using inductively coupled plasma mass spectrometry to record fluctuations in a metal pollution episode
Identifieur interne : 002489 ( Istex/Curation ); précédent : 002488; suivant : 002490Analysis of tree rings using inductively coupled plasma mass spectrometry to record fluctuations in a metal pollution episode
Auteurs : Shaun A. Watmough [Canada] ; Thomas C. Hutchinson [Canada]Source :
- Environmental Pollution [ 0269-7491 ] ; 1996.
Abstract
Analysis of Acer pseudoplatanus L. (sycamore) tree rings using ICP-MS was used to assess the impact of metal deposition on trees growing in the vicinity of a metal refinery at Prescot, north-west England compared to a reference site at Croxteth 6 km distant receiving minimal deposition. No difference in tree growth between sites was recorded. Large reductions in Cu and Cd deposition since the late 1970s was accompanied by a steep decline in Cd concentrations in the outer rings in trees close to the refinery. A similar reduction in Cu concentrations was less apparent due to a tendency for Cu to increase in the outer rings. Zinc and Ni were higher in xylem at Prescot compared to Croxteth. There was no trend in Zn concentrations at either site although Ni concentrations increased in trees close to the refinery after 1982. Manganese concentrations in xylem were much higher at Prescot; Mn levels declined until the late 1970s and then increased slightly in later years interspersed by large concentration peaks within individual years during the 1980s. There was little change in Mn concentrations in trees at Croxteth during this period. Calcium, Mg and Sr concentrations remained steady or declined slightly in rings formed since 1965 in trees at Croxteth. Concentrations of Ca, Mg and Sr were higher in rings formed prior to the mid 1970s in trees at Prescot, but declined steadily after this period, although peaks in concentrations of each element were recorded in individual years during the 1980s. Phosphorous concentrations in rings increased towards the cambium at Croxteth, although P levels decreased in rings formed after 1982 at Prescot. No difference in K concentrations between sites was recorded. Lead concentrations in xylem at both sites declined steadily in rings formed after 1970, although concentrations were higher at the reference site. Analysis of individual sycamore tree rings appears to record short-term changes in pollution episodes, with little lateral movement of elements occurring. It is suggested that changes in element concentrations in trees close to the refinery are a result of reduced metal deposition combined with increased soil acidity due to reduced buffering capacity of metal ions in rainfall.
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DOI: 10.1016/0269-7491(95)00107-7
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Analysis of tree rings using inductively coupled plasma mass spectrometry to record fluctuations in a metal pollution episode</title><author><name sortKey="Watmough, Shaun A" sort="Watmough, Shaun A" uniqKey="Watmough S" first="Shaun A." last="Watmough">Shaun A. Watmough</name><affiliation wicri:level="1"><mods:affiliation>Environmental and Resource Studies Program, Trent University, Peterborough, Ontario, Canada K9J 7B8</mods:affiliation><country>Canada</country><wicri:regionArea>Environmental and Resource Studies Program, Trent University, Peterborough, Ontario</wicri:regionArea></affiliation></author><author><name sortKey="Hutchinson, Thomas C" sort="Hutchinson, Thomas C" uniqKey="Hutchinson T" first="Thomas C." last="Hutchinson">Thomas C. Hutchinson</name><affiliation wicri:level="1"><mods:affiliation>Environmental and Resource Studies Program, Trent University, Peterborough, Ontario, Canada K9J 7B8</mods:affiliation><country>Canada</country><wicri:regionArea>Environmental and Resource Studies Program, Trent University, Peterborough, Ontario</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:853A53C1EDC5C6AA5FE110AF4C5D8ED67BDD8E08</idno><date when="1996" year="1996">1996</date><idno type="doi">10.1016/0269-7491(95)00107-7</idno><idno type="url">https://api-v5.istex.fr/document/853A53C1EDC5C6AA5FE110AF4C5D8ED67BDD8E08/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">002489</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">002489</idno><idno type="wicri:Area/Istex/Curation">002489</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Analysis of tree rings using inductively coupled plasma mass spectrometry to record fluctuations in a metal pollution episode</title><author><name sortKey="Watmough, Shaun A" sort="Watmough, Shaun A" uniqKey="Watmough S" first="Shaun A." last="Watmough">Shaun A. Watmough</name><affiliation wicri:level="1"><mods:affiliation>Environmental and Resource Studies Program, Trent University, Peterborough, Ontario, Canada K9J 7B8</mods:affiliation><country>Canada</country><wicri:regionArea>Environmental and Resource Studies Program, Trent University, Peterborough, Ontario</wicri:regionArea></affiliation></author><author><name sortKey="Hutchinson, Thomas C" sort="Hutchinson, Thomas C" uniqKey="Hutchinson T" first="Thomas C." last="Hutchinson">Thomas C. Hutchinson</name><affiliation wicri:level="1"><mods:affiliation>Environmental and Resource Studies Program, Trent University, Peterborough, Ontario, Canada K9J 7B8</mods:affiliation><country>Canada</country><wicri:regionArea>Environmental and Resource Studies Program, Trent University, Peterborough, Ontario</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Environmental Pollution</title><title level="j" type="abbrev">ENPO</title><idno type="ISSN">0269-7491</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1996">1996</date><biblScope unit="volume">93</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="93">93</biblScope><biblScope unit="page" to="102">102</biblScope></imprint><idno type="ISSN">0269-7491</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0269-7491</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Analysis of Acer pseudoplatanus L. (sycamore) tree rings using ICP-MS was used to assess the impact of metal deposition on trees growing in the vicinity of a metal refinery at Prescot, north-west England compared to a reference site at Croxteth 6 km distant receiving minimal deposition. No difference in tree growth between sites was recorded. Large reductions in Cu and Cd deposition since the late 1970s was accompanied by a steep decline in Cd concentrations in the outer rings in trees close to the refinery. A similar reduction in Cu concentrations was less apparent due to a tendency for Cu to increase in the outer rings. Zinc and Ni were higher in xylem at Prescot compared to Croxteth. There was no trend in Zn concentrations at either site although Ni concentrations increased in trees close to the refinery after 1982. Manganese concentrations in xylem were much higher at Prescot; Mn levels declined until the late 1970s and then increased slightly in later years interspersed by large concentration peaks within individual years during the 1980s. There was little change in Mn concentrations in trees at Croxteth during this period. Calcium, Mg and Sr concentrations remained steady or declined slightly in rings formed since 1965 in trees at Croxteth. Concentrations of Ca, Mg and Sr were higher in rings formed prior to the mid 1970s in trees at Prescot, but declined steadily after this period, although peaks in concentrations of each element were recorded in individual years during the 1980s. Phosphorous concentrations in rings increased towards the cambium at Croxteth, although P levels decreased in rings formed after 1982 at Prescot. No difference in K concentrations between sites was recorded. Lead concentrations in xylem at both sites declined steadily in rings formed after 1970, although concentrations were higher at the reference site. Analysis of individual sycamore tree rings appears to record short-term changes in pollution episodes, with little lateral movement of elements occurring. It is suggested that changes in element concentrations in trees close to the refinery are a result of reduced metal deposition combined with increased soil acidity due to reduced buffering capacity of metal ions in rainfall.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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