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-  2014 

金华市街道灰尘磁化率与交通因素的关系

DOI: 10.11821/dlyj201404004

Keywords: 街道灰尘,磁化率,路网密度,金华市

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Abstract:

摘要: 通过对浙江省金华市街道灰尘磁化率测试,从主干道与非主干道磁化率的对比、十字路口与非十字路口磁化率的比较以及磁化率与路网密度相关分析三个方面,定量研究金华市街道灰尘磁化率及其与交通因素的关系。结果表明:灰尘样品磁化率(χlf)变幅为127.57×10-8~853.91×10-8 m3 · kg-1,平均值为322.55×10-8 m3 · kg-1,高于本地土壤磁化率;频率磁化率变幅为0.67%~3.99%,平均值为1.61%;磁化率与频率磁化率呈负相关关系;主干道灰尘的磁化率大于非主干道,十字路口灰尘磁化率大于非十字路口;灰尘磁化率和路网密度呈正相关,金华市街道灰尘磁化率可以指示交通污染的分布状况

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