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Title: Synchrotron micro-scale measurement of metal distributions in Phragmites australis and Typha latifolia root tissue from an urban brownfield site

Journal Article · · Journal of Environmental Sciences
 [1];  [1];  [2];  [3];  [3];  [4];  [4];  [4]
  1. Montclair State Univ., Montclair, NJ (United States)
  2. The State Univ. of New Jersey, New Brunswick, NJ (United States)
  3. East China Normal Univ. (ECNU), Shanghai (China)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
+ Show Author Affiliations

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, Phragmites australis and Typha latifolia 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 P. australis and T. latifolia 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.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704; AC02-98CH10886
OSTI ID:
1228830
Alternate ID(s):
OSTI ID: 1245288; OSTI ID: 1247975
Report Number(s):
BNL-108441-2015-JA; BNL-112048-2016-JA; R&D Project: BO169; KC0304020
Journal Information:
Journal of Environmental Sciences, Vol. 22, Issue 23; ISSN 1001-0742
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Related Subjects

59 BASIC BIOLOGICAL SCIENCES
Phragmites australis
Typha latifolia
trace metals
synchrotron radiation technique
brownfield
54 ENVIRONMENTAL SCIENCES