Magnetic response to atmospheric heavy metal pollution recorded by dust-loaded leaves in Shougang industrial area, western Beijing

作     者：HU ShouYun DUAN XueMei SHEN MingJie U BLAHA W ROESLER YAN HaiTao E APPEL V HOFFMANN 

作者机构：State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Limnology Chinese Academy of Sci- ences Nanjing 210008 China Graduate University of Chinese Academy of Sciences Beijing 100049 China epartment of Geography East China Normal University Shanghai 200062 China Institute for Geosciences University of Tubingen 72076 Tubingen Germany epartment of Geography Shanghai Normal-University Shanghai 200234 China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2008年第53卷第10期

页      面：1555-1564页

核心收录：

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：the National Natural Science Foundation of China (Grant Nos. 40374021, 40674033, 40172102) DFG project (AP 34/21) 

主　　题：首钢集团 大气重金属污染 磁场参数 环境保护 

摘      要：Fifty-five evergreen tree s leaves growing less than one year were collected from Shougang industrial area in western suburb of Beijing, including steel plants and its ambient residential areas, recreational parks and farmlands. Rock magnetic properties and heavy metal contents were studied. The results show that the magnetic properties of leaf samples are predominated by low-coercivity magnetite, and both the concentration and grain size of magnetite particles gradually decreased with the distance from the main pollution source increases. Moreover, there is a significant linear relationship between magnetic parameters (the low-field magnetic susceptibility, saturation isothermal remanent magnetization and anhysteretic remanent magnetization) and heavy metals contents (Fe, Pb, V, Cr and Zn) (0.73≤R≤ 0.88). Hence, the magnetic parameters of leaves can serve as a proxy for quick detecting of the recent atmospheric metallic pollution.