Ion Uptake Determination of Dendrochronologically-Dated Trees Using Neutron Activation Analysis

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Uptake of metal ions by plan roots is a function of the type and concentration of metal in the soil, the nutrient biochemistry of the plant, and the immediate environment of the root. Uptake of gold (Au) is known to be sensitive to soil pH for many species. Soil acidification due to acid precipitation following volcanic eruptions can dramatically increase Au uptake by trees. Identification of high Au content in tree rings in dendrochronologically-dated, overlapping sequences of trees allows the identification of temporally-conscribed, volcanically-influenced periods of environmental change. Ion uptake, specifically determination of trace amounts of gold, was performed for ... continued below

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Unlu, Kenan; Kuniholm, P.I.; Schwarz, D.K.H.; Cetiner, N.O. & Chiment, J.J. March 30, 2009.

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Uptake of metal ions by plan roots is a function of the type and concentration of metal in the soil, the nutrient biochemistry of the plant, and the immediate environment of the root. Uptake of gold (Au) is known to be sensitive to soil pH for many species. Soil acidification due to acid precipitation following volcanic eruptions can dramatically increase Au uptake by trees. Identification of high Au content in tree rings in dendrochronologically-dated, overlapping sequences of trees allows the identification of temporally-conscribed, volcanically-influenced periods of environmental change. Ion uptake, specifically determination of trace amounts of gold, was performed for dendrochronologically-dated tree samples utilizing Neutron Activation Analysis (NAA) technique. The concentration of gold was correlated with known enviironmental changes, e.g. volcanic activities, during historic periods.

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  • Report No.: DOe/ID/14702
  • Grant Number: FG07-05ID14702
  • DOI: 10.2172/950837 | External Link
  • Office of Scientific & Technical Information Report Number: 950837
  • Archival Resource Key: ark:/67531/metadc931533

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  • March 30, 2009

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Feb. 20, 2017, 1:34 p.m.

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Unlu, Kenan; Kuniholm, P.I.; Schwarz, D.K.H.; Cetiner, N.O. & Chiment, J.J. Ion Uptake Determination of Dendrochronologically-Dated Trees Using Neutron Activation Analysis, report, March 30, 2009; [University Park, Pennsylvania]. (digital.library.unt.edu/ark:/67531/metadc931533/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.