贵州部分地区土壤挥发性汞释放通量及其影响因素的研究

GYIG OpenIR > 研究生 > 学位论文

	贵州部分地区土壤挥发性汞释放通量及其影响因素的研究
	冯新斌
	1994
学位授予单位	中国科学院地球化学研究所
学位授予地点	中国科学院地球化学研究所
学位名称	博士
学位专业	环境地球化学
关键词	释放通量汞的形态
摘要	本文通过对三种不同类型地区（高汞地球化学区、汞污染区和背景区）的土壤中汞的含量和存在形式的分析，以及对各采样点土壤挥发性汞释放通量的野外测量，得出：人为污染和地质作用都会造成土壤中汞的富集，但这两类土壤中汞的相态分布有明显的差异；土壤挥发性汞释放通量具有白天高于夜间的昼夜变化规律；土壤挥发性汞释放通量与土壤总汞含量呈正相关关系，而与各个相态之间关系并不明显。土壤挥发性汞释放通量与土壤总汞含量、大气绝对气温之间存在的关系可用（5－3）式描述。
其他摘要	The contents of total mercury and every single mercury species of soil samples gathered from three different type areas (high mercury content area, man-made mercury-polluted area and reference area) respectively were analysed. Net emission fluxes of volatile mercury over soil of the studied area were measured in feiid. We get conclusions that high mercury contents of soils can be caused by both man-made pollution and geological process, but the two kinds of soils are defferent from their distrubution of mercury species, that the entire series of Hg flux measurements exhibited a very consistent diurnal pattern, with Hg fluxes being clearly higher during the daytime than at night and that the magnitude of fluxes of volatile mercury over soil depends clearly on the total mercury contents of the soil samples, but not on any single mercury species contents of the soil samples. The relationships between the total mercury contents, air temperatures and the Hg fluxes can be described by formula (5-3).
页数	46
语种	中文
文献类型	学位论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/3952
专题	研究生_研究生_学位论文环境地球化学国家重点实验室
通讯作者	冯新斌
推荐引用方式 GB/T 7714	冯新斌. 贵州部分地区土壤挥发性汞释放通量及其影响因素的研究[D]. 中国科学院地球化学研究所. 中国科学院地球化学研究所,1994.