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Title: Synchrotron micro-scale study of trace metal transport and distribution in Spartina alterniflora root system in Yangtze River intertidal zone

Journal Article · · Environmental Science and Pollution Research International
 [1];  [2];  [3];  [3];  [3];  [1];  [2];  [2];  [2];  [2];  [2]
  1. Montclair State Univ., Montclair, NJ (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. East China Normal Univ. (ECNU), Shanghai (China)

This study is focused on micro-scale measurement of metal (Ca, Cl, Fe, K, Mn, Cu, Pb, and Zn) distributions in Spartina alterniflora root system. The root samples were collected in the Yangtze River intertidal zone in July 2013. Synchrotron X-ray fluorescence (XRF), computed microtomography (CMT), and X-ray absorption near-edge structure (XANES) techniques, which provide micro-meter scale analytical resolution, were applied to this study. Although it was found that the metals of interest were distributed in both epidermis and vascular tissue with the varying concentrations, the results showed that Fe plaque was mainly distributed in the root epidermis. Other metals (e.g., Cu, Mn, Pb, and Zn) were correlated with Fe in the epidermis possibly due to scavenge by Fe plaque. Relatively high metal concentrations were observed in the root hair tip. As a result, this micro-scale investigation provides insights of understanding the metal uptake and spatial distribution as well as the function of Fe plaque governing metal transport in the root system.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
OSTI ID:
1228831
Report Number(s):
BNL--108455-2015-JA
Journal Information:
Environmental Science and Pollution Research International, Journal Name: Environmental Science and Pollution Research International Journal Issue: 23 Vol. 22; ISSN 0944-1344
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

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Phytoremediation potential and control of Phragmites australis as a green phytomass: an overview journal January 2019