期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 19, 期 8, 页码 3389-3399出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-012-0863-7
关键词
Trace element; Mount Heng; Sources; Long-range transport; South China; Yangtze River Delta; Pearl River Delta
资金
- China National Basic Research Program [2005CB422203]
- National Natural Science Foundation of China [41075092]
- Mount Heng Meteorological Station
During a 2009 investigation of the transport and deposition of trace elements in southern China, 37 event-based precipitation samples were collected at an observatory on Mount Heng, China (1,269 m asl). Concentrations of trace elements were analyzed using inductively coupled plasma-mass spectrometry and the wet deposition fluxes were established. A combination of techniques including enrichment factor analysis, principal component analysis, and back trajectory models were used to identify pollutant sources. Trace element concentrations at Mount Heng were among the highest with respect to measured values reported elsewhere. All elements were of non-marine origin. The elements Pb, As, Cu, Se, and Cd were anthropogenic, while Fe, Cr, V, Ba, Mn, and Ni were of mixed crustal/anthropogenic origin. The crustal and anthropogenic contributions of trace elements were 12.8 % (0.9 similar to 17.4 %) and 87.2 % (82.6 similar to 99.1 %), with the maximum crustal fraction being 17.4 % for Fe. Coal combustion, soil and road dust, metallurgical processes, and industrial activities contributed to the element composition. Summit precipitation events were primarily distant in origin. Medium- to long-range transport of trace elements from the Yangtze River Delta and northern China played an important role in wet deposition at Mount Heng, while air masses from south or southeast of the station were generally low in trace element concentrations.
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