气候变化领域集成服务门户(CCPortal): Recent changes of atmospheric heavy metals in a high-elevation ice core from Muztagh Ata, east Pamirs: initial results

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DOI	10.3189/172756406781812186
	Recent changes of atmospheric heavy metals in a high-elevation ice core from Muztagh Ata, east Pamirs: initial results
	Li, Yuefang; Yao, Tandong; Wang, Ninglian; Li, Zhen; Tian, Lide; Xu, Baiqing; Wu, Guangjian
发表日期	2006
ISSN	0260-3055
起始页码	154
结束页码	+
卷号	43
英文摘要	Al, Mn, Rb, Sr, Ba, Cs, Bi and Sb were measured at various depth intervals of a 41.6 m firn/ ice core drilled at an elevation of 7010 m near the top of Muztagh Ata glacier, east Pamirs (38 degrees 17'N, 75 degrees 06'E), central Asia. These data, spanning the mid-1950s to 2000, were obtained by analyzing 101 sections using a sector-field double-focusing inductively coupled plasma mass spectrometer (ICP-MS) instrument. This study provides the first time series for these metals from central Asia. Concentrations are 11.7-329 ng mL(-1) for Al, 0.33-42.7 ng mL(-1) for Min, 0.42-17.8 ng mL(-1) for Sr, 0.04-1.4 ng mL(-1) for Rb, 0.18-10.4 ng mL(-1) for Ba, 2-167 pg mL(-1) for Cs, 2-51 pg mL(-1) for Sb and 1-31 pg mL(-1) for Bi. Large variations in metal concentrations were found during the study period. Pronounced increases in concentrations were observed for Sb and Bi from the mid-1960s to the beginning of the 1990s, suggesting increased anthropogenic sources of Sb and Bi in central Asia during the same period. However, the decrease of Sb and Bi concentrations during the mid- to late 1990s reflects a reduction in anthropogenic activities in central Asia.
关键词	ANTARCTIC SNOW TRACE-METALS CENTRAL GREENLAND ALPINE SNOW RECORD LEAD EMISSIONS POLLUTION CADMIUM COPPER
学科领域	Geology
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000245520800022
来源期刊	ANNALS OF GLACIOLOGY, VOL 43, 2006
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111461
推荐引用方式 GB/T 7714	Li, Yuefang,Yao, Tandong,Wang, Ninglian,et al. Recent changes of atmospheric heavy metals in a high-elevation ice core from Muztagh Ata, east Pamirs: initial results[J]. 中国科学院青藏高原研究所,2006,43.
APA	Li, Yuefang.,Yao, Tandong.,Wang, Ninglian.,Li, Zhen.,Tian, Lide.,...&Wu, Guangjian.(2006).Recent changes of atmospheric heavy metals in a high-elevation ice core from Muztagh Ata, east Pamirs: initial results.ANNALS OF GLACIOLOGY, VOL 43, 2006,43.
MLA	Li, Yuefang,et al."Recent changes of atmospheric heavy metals in a high-elevation ice core from Muztagh Ata, east Pamirs: initial results".ANNALS OF GLACIOLOGY, VOL 43, 2006 43(2006).