Imaging of selenium in plants using tapered metal monocapillary optics.
Tapered metal monocapillary optics provide a potential alternative to conventional methods of producing small X-ray beams. This paper presents the initial results of chemically specific imaging using such devices. Cellular resolution of organic selenium is obtained in a longitudinal section of mature Astragalus bisulcatus, a selenium hyperaccumulating plant. This work demonstrates the utility of metal monocapillary optics for imaging dilute levels of target elements in biological tissues.
Pickering
Ingrid J
IJ
Stanford Synchrotron Radiation Laboratory, SLAC, 2575 Sand Hill Road, MS 69, Menlo Park, CA 94025, USA. pickering@ssrl.slac.stanford.edu
Hirsch
Gregory
G
Prince
Roger C
RC
Sneeden
Eileen Yu
EY
Salt
David E
DE
George
Graham N
GN
D027883:Astragalus Plant / Q000737:chemistry*; D007091:Image Processing, Computer-Assisted; D012643:Selenium / Q000032:analysis* / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission
D012643:Selenium