Study of moss as air pollution monitor by SRXRF technique  

作　　者：ZHANG YuanXun CAO Tong ATSUO lida CAO QingChen LOU YuXia ZHANG GuiLin LI Yan 

机构地区：[1]Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China [2]Life and Environment Science College, Shanghai Normal University, Shanghai 200234, China [3]Photon Factory, National Laboratory for High Energy Physics, Tsukuba, Ibaraki 305, Japan

出　　处：《Chinese Science Bulletin》2009年第17期2987-2990,共4页

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 10775170);Major Project of Knowledge Innovation Program of Chinese Academy of Sciences (Grant No. KJCX3.SYW.N3);Key Project of Natural Science Foundation of Shanghai (Grant No. 08390513800);Project of Japan KEK, PF-PAC (Grant No. 2007G504);National Laboratory of BEPC (Grant No. VR-07004)

摘　　要：In order to explore the mechanism of moss as air pollution biomonitor, the moss samples were exposed in a pollution site of Shanghai Institute of Steel Research (SISR) and a control site of Shanghai Institute of Applied Physics (SIAP) simultaneously for one month. The concentrations of trace elements in the micro areas of leaf and stem, as well as in the whole moss tissue, were determined using synchrotron radiation X-ray fluorescence (SRXRF) method. The distributions of some metal elements such as Pb, Cu, Fe, Ni, Mn, Zn, Ca and K in the leaf surface and the stem slice were obtained. The results showed that the metallic ions were not evenly distributed after adsorption. In particular, some elements of K, Ni, Fe, Pb, etc., were concentrated in the leaf apex and the intermediate rib. Under pollution condition, the excessive Pb was adsorbed and deposited in the leaf. It caused serious damage to plant growth and ultrastructure, also suppressed moss’ normal absorption to the nutritive elements of K, Ca, etc.In order to explore the mechanism of moss as air pollution biomonitor, the moss samples were exposed in a pollution site of Shanghai Institute of Steel Research （SISR） and a control site of Shanghai Institute of Applied Physics （SIAP） simultaneously for one month. The concentrations of trace elements in the micro areas of leaf and stem, as well as in the whole moss tissue, were determined using synchrotron radiation X-ray fluorescence （SRXRF） method. The distributions of some metal elements such as Pb, Cu, Fe, Ni, Mn, Zn, Ca and K in the leaf surface and the stem slice were obtained. The results showed that the metallic ions were not evenly distributed after adsorption. In particular, some elements of K, Ni, Fe, Pb, etc., were concentrated in the leaf apex and the intermediate rib. Under pollution condition, the excessive Pb was adsorbed and deposited in the leaf. It caused serious damage to plant growth and ultrastructure, also suppressed moss’ normal absorption to the nutritive elements of K, Ca, etc.

关 键 词：空气污染 同步辐射 生物监测 荧光技术 金属离子吸附 X射线荧光法 中国科学院 SRXRF 

分 类 号：X51[环境科学与工程—环境工程] TL501[核科学技术—核技术及应用]