Occurrence and distribution of dissolved tellurium in Changjiang River estuary

doi:10.1007/s00343-014-3161-z

	Occurrence and distribution of dissolved tellurium in Changjiang River estuary
	Wu Xiaodan; Song Jinming; Li Xuegang; Song, JM (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
	2014-03-01
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号	32 期号:2 页码:444-454
文章类型	Article
摘要	With the implementation of the GEOTRACES program, the biogeochemical cycle and distribution of tellurium (Te) in marine environments are becoming increasing environmental concerns. In this study, the concentration of dissolved Te in the Changjiang (Yangtze) River estuary and nearby waters was determined in May 2009 by hydride-generation atomic fluorescence spectrometry to elucidate the abundance, dominant species, distribution, and relationship with environmental factors. Results show that: (1) dissolved Te was low owing to its low abundance in the Earth's crust, high insolubility in water, and strong affinity to particulate matter; (2) Te(IV) and Te(VI) predominated in surface water. Te(VI) was the dominant species in bottom water, and Te(IV) was the minor species; (3) Horizontally, resulting from low phytoplankton metabolism and the weak reduction from Te(VI) to Te(IV) in the shore, Te(IV) was concentrated in the central zone instead of the coastal region. However, Te(VI) was abundant near the mouth of the Changjiang River where the Changjiang water is diluted and in the area to the south where the Taiwan Warm Current invaded. In the adsorption-desorption process, Te(IV) was negatively related to suspended particulate matter (SPM), indicating that it was adsorbed by particulate matter. While for Te(VI), the positive correlation with SPM suggested that it was desorbed from the solid phase. In the estuary, dissolved Te had a negative correlation to salinity. However, it deviated from the dilution line in high-salinity regions due to the invasion of the Taiwan Warm Current and the mineralization of organic matter. The relationship between Te(IV) and SPM nutrients indicated that it was more bioavailable and more related to phosphorus than to nitrogen. Progress in the field is slow and more research is needed to quantify the input of Te to the estuary and evaluate the biochemical role of organisms.
关键词	Dissolved Tellurium (Te) Changjiang River Estuary Distribution
学科领域	Marine & Freshwater Biology ; Oceanography
DOI	10.1007/s00343-014-3161-z
收录类别	SCI
语种	英语
WOS记录号	WOS:000332739600022
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/24030
专题	海洋生态与环境科学重点实验室
通讯作者	Song, JM (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
作者单位	Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Wu Xiaodan,Song Jinming,Li Xuegang,et al. Occurrence and distribution of dissolved tellurium in Changjiang River estuary[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2014,32(2):444-454.
APA	Wu Xiaodan,Song Jinming,Li Xuegang,&Song, JM .(2014).Occurrence and distribution of dissolved tellurium in Changjiang River estuary.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,32(2),444-454.
MLA	Wu Xiaodan,et al."Occurrence and distribution of dissolved tellurium in Changjiang River estuary".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 32.2(2014):444-454.

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