Synchrotron micro-scale measurement of metal distributions in <i>Phragmites australis</i> and <i>Typha latifolia</i> root tissue from an urban brownfield site [electronic resource]
<I>Phragmites Australis</I>; <I>Typha Latifolia</I>; Trace Metals; Synchrotron Radiation Technique; Brownfield.
Saved in:
| Online Access: |
Online Access (via OSTI) |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. Office of Basic Energy Sciences ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2015.
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| Subjects: |
| Summary: | <I>Phragmites Australis</I>; <I>Typha Latifolia</I>; Trace Metals; Synchrotron Radiation Technique; Brownfield. |
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| Abstract: | Liberty State Park in New Jersey, USA, is a “brownfield” site containing various levels of contaminants. To investigate metal uptake and distributions in plants on the brownfield site, <i>Phragmites australis</i> and <i>Typha latifolia</i> were collected in Liberty State Park during the growing season (May–September) in 2011 at two sites with the high and low metal loads, respectively. The objective of this study was to understand the metal (Fe, Mn, Cu, Pb and Zn) concentration and spatial distributions in <i>P. australis</i> and <i>T. latifolia</i> root systems with micro-meter scale resolution using synchrotron X-ray microfluorescence (μXRF) and synchrotron X-ray computed microtomography (μCMT) techniques. The root structure measurement by synchrotron μCMT showed that high X-ray attenuation substance appeared in the epidermis. Synchrotron μXRF measurement showed that metal concentrations and distributions in the root cross-section between epidermis and vascular tissue were statistically different. Significant correlations were found between metals (Cu, Mn, Pb and Zn) and Fe in the epidermis, implying that metals were scavenged by Fe oxides. The results from this study suggest that the expression of metal transport and accumulation within the root systems may be element specific. Lastly, the information derived from this study can improve our current knowledge of the wetland plant ecological function in brownfield remediation. |
| Item Description: | Published through SciTech Connect. 11/01/2015. "bnl--112048-2016-ja" Journal of Environmental Sciences 41 C ISSN 1001-0742 AM. Huan Feng; Keith W. Jones; Yu Qian; Frank J. Gallagher; Weiguo Zhang; Lizhong Yu; Changjun Liu; Ryan Tappero. |
| Physical Description: | p. 172-182 : digital, PDF file. |