期刊
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
卷 101, 期 5, 页码 549-553出版社
SPRINGER
DOI: 10.1007/s00128-018-2430-5
关键词
Mercury content; Basalt; Andesite; Dacite
资金
- Grant Agency of the Czech Republic [P503/12/0682]
- Masaryk University [MUNI/A/0886/2016]
- Institute of Analytical Chemistry of the CAS [RVO 68081715]
- Institute of Geology of the CAS [RVO 67985831]
- Ministry of Education, Youth and Sports CR under the National Sustainability Programme I
- BUT project [LO1408]
Volcanic activity is one of the primary sources of mercury in the earth's ecosystem. In this work, volcanic rocks from four geotectonically distinct localities (the Czech Republic - intraplate, rift-related alkaline basaltic rocks; Iceland - hotspot/rift-related tholeiitic basaltic rocks; Japan - island arc calc-alkaline andesites; and Alaska - continental arc calc-alkaline dacites) were studied. Ultra-trace Hg contents in all samples ranged from 0.3 up to 6 mu g/kg. The highest Hg content was determined for volcanic ash from Mount Redoubt (Alaska, USA). In the case of basaltic volcanic rocks, the obtained results are about two orders of magnitude smaller than values formerly assumed for primary mercury contents in basaltic lavas. They are close to predicted Hg contents in the mantle source, i.e. below 0.5 mu g/kg. Hg degassing is probably a key process for the resulting Hg contents in material ejected during volcanic eruption, which is previously enriched by Hg in the shallow-crust.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据