Pickering Ingrid J, Hirsch Gregory, Prince Roger C, Sneeden Eileen Yu, Salt David E, George Graham N
Stanford Synchrotron Radiation Laboratory, SLAC, 2575 Sand Hill Road, MS 69, Menlo Park, CA 94025, USA.
J Synchrotron Radiat. 2003 May 1;10(Pt 3):289-90. doi: 10.1107/s0909049503003273. Epub 2003 Apr 25.
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.
锥形金属单毛细管光学器件为产生小X射线束的传统方法提供了一种潜在的替代方案。本文介绍了使用此类器件进行化学特异性成像的初步结果。在成熟的双沟黄芪（一种硒超积累植物）的纵切面中获得了有机硒的细胞分辨率。这项工作证明了金属单毛细管光学器件在对生物组织中低浓度目标元素进行成像方面的实用性。
