title: Synchrotron X-ray microfluorescence measurement of metal distributions in Phragmites australis root system in the Yangtze River intertidal zone.
abstract: This study investigates the distributions of Br, Ca, Cl, Cr, Cu, K, Fe, Mn, Pb, Ti, V and Zn in Phragmites australis root system and the function of Fe nanoparticles in scavenging metals in the root epidermis using synchrotron X-ray microfluorescence, synchrotron transmission X-ray microscope measurement and synchrotron X-ray absorption near-edge structure techniques. The purpose of this study is to understand the mobility of metals in wetland plant root systems after their uptake from rhizosphere soils. Phragmites australis samples were collected in the Yangtze River intertidal zone in July 2013. The results indicate that Fe nanoparticles are present in the root epidermis and that other metals correlate significantly with Fe, suggesting that Fe nanoparticles play an important role in metal scavenging in the epidermis.
authors.affiliation: Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ 07043, USA.
authors.forename: Huan
authors.initials: H
authors.lastname: Feng
authors.affiliation: State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, People's Republic of China.
authors.forename: Weiguo
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ 07043, USA.
authors.forename: Yu
authors.initials: Y
authors.lastname: Qian
authors.affiliation: State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, People's Republic of China.
authors.forename: Wenliang
authors.initials: W
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, People's Republic of China.
authors.forename: Lizhong
authors.initials: L
authors.lastname: Yu
authors.affiliation: Computational Science Center, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Shinjae
authors.initials: S
authors.lastname: Yoo
authors.affiliation: Photon Sciences Directorate, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.affiliation: Photon Sciences Directorate, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Jia Jun
authors.initials: JJ
authors.lastname: Wang
authors.affiliation: Photon Sciences Directorate, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Christopher
authors.initials: C
authors.lastname: Eng
authors.affiliation: Biological Sciences Department, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Chang Jun
authors.initials: CJ
authors.lastname: Liu
authors.affiliation: Photon Sciences Directorate, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Ryan
authors.initials: R
authors.lastname: Tappero
keywords: Fe nanoparticles; Phragmites australis; Yangtze River intertidal zone; metal uptake