The origin, historical variations, and distribution of heavy metals in the Qiongzhou Strait and nearby marine areas

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	The origin, historical variations, and distribution of heavy metals in the Qiongzhou Strait and nearby marine areas
	Zhang, ZQ; Chen, L; Wang, WP; Li, TJ; Zu, TT
刊名	JOURNAL OF OCEAN UNIVERSITY OF CHINA
	2017
卷号	16 期号:2 页码:262-268
关键词	heavy metals sediment origin Qiongzhou Strait
通讯作者	chenliang@smes.gz.cn
中文摘要	We analyzed heavy metal concentrations in a number of surface sediments and cores from the Qiongzhou Strait and surrounding marine areas. The areas of high concentrations are primarily outside the eastern mouth of the Qiongzhou Strait and on the west side of the Leizhou Peninsula, whereas the areas of low concentrations are located primarily in the eastern Qiongzhou Strait. The maximum Cd, Pb and Zn concentrations in the samples collected in our study do not exceed the official standards for marine sediments, whereas the concentrations of Cr and Cu slightly exceed the standards. Correlations exist between the concentrations of Cu, Pb, Zn, Cr and Cd, and the concentrations of these metals are positively correlated with the mean particle size (phi value), indicating that the finer sediments have adsorbed greater amounts of heavy metal elements than the coarser sediments. An evaluation of the potential environmental risks demonstrates that certain indices of heavy metal pollution and environmental risks are relatively low and may be assigned low risk levels, thereby indicating that, in terms of heavy metals, the marine sedimentary environment in this region is only mildly impacted. Our analysis of the contaminant origins shows that the heavy metals in this region primarily originate in the Pearl River Estuary and that a small amount of them is derived from local runoff. The elevated heavy metal concentrations from the upper sections of the cores started 130 years ago, which indicats that heavy metals in the surface sediments are primarily due to human activities associated with industrialization.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/16442]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Zhang, ZQ,Chen, L,Wang, WP,et al. The origin, historical variations, and distribution of heavy metals in the Qiongzhou Strait and nearby marine areas[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2017,16(2):262-268.
APA	Zhang, ZQ,Chen, L,Wang, WP,Li, TJ,&Zu, TT.(2017).The origin, historical variations, and distribution of heavy metals in the Qiongzhou Strait and nearby marine areas.JOURNAL OF OCEAN UNIVERSITY OF CHINA,16(2),262-268.
MLA	Zhang, ZQ,et al."The origin, historical variations, and distribution of heavy metals in the Qiongzhou Strait and nearby marine areas".JOURNAL OF OCEAN UNIVERSITY OF CHINA 16.2(2017):262-268.