Magnetic properties of tree leaves and their significance in atmospheric particle pollution in Linfen City, China
Magnetic properties of tree leaves and their significance in atmospheric particle pollution in Linfen City, China
复制标题
临汾市树叶磁性及其在大气颗粒物污染中的意义
DOI：
10.1007/s11769-013-0588-7
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发表时间：
2013-02-01
影响因子：
3.4
通讯作者：
Appel, Erwin
中科院分区：
文献类型：
--
作者：
Yin Gang;Hu Shouyun;Appel, Erwin
在山西省吕梁市工业区、居民区和汾河生态区采集了51个树叶样品，进行了大气污染的磁学研究。质量比磁化率（γ）的测量显示出显著的变化范围（从11.6 × 10− 8 m3/kg到129.7 × 10− 8 m3/kg）。磁化率总体值按工业区>居民区>汾河生态区的顺序递减。与浓度相关的磁参数（饱和等温剩磁、无滞后剩磁和磁化率）在工业区出现相对升高，其最高值出现在吕梁钢厂附近。磁性颗粒以多畴磁铁矿状矿物为主。磁性颗粒物浓度和粒径均随距工业区距离的增加而减小，说明工业区尤其是吕梁钢铁厂是大气颗粒物污染的主要来源。居民区和汾河生态区也受到一定程度的影响。研究结果表明，树叶磁性测量在吕梁市大气污染监测中是可行的。
Fifty-one tree leaves were sampled in the industrial area, residential area, and Fenhe River ecological zone, for the purpose of a magnetic study on atmospheric pollution in Linfen City, Shanxi Province, China. Measurements of mass-specific magnetic susceptibility (γ) show a significant variation range (from 11.6 × 10−8m3/kg to 129.7 × 10−8m3/kg). Overall values of magnetic susceptibility decline in the following sequence: industrial area > residential area > Fenhe River ecological zone. The relatively elevated concentration-related magnetic parameters (saturation isothermal remanent magnetization, anhysteretic remanent magnetization and magnetic susceptibility) appear in the industrial area, with their highest values in the vicinity of Linfen Steel Mill. Magnetic particles are dominated by multidomain, magnetite-like minerals. Magnetic particle concentration and grain size both decrease with the increasing distance from industrial area, indicating the industrial area, especially Linfen Steel Mill, is the main source of atmospheric particle pollution. Residential area and Fenhe River ecological zone are also affected by industrial emission to a certain extent. The results of this study indicate that magnetic measurements of tree leaves are practicable for monitoring and determination of atmospheric pollution in Linfen City.