Heavy metal and clay mineral analyses in the sediments of Upper Gulf of Thailand and their implications on sedimentary provenance and dispersion pattern

doi:10.1016/j.jseaes.2015.04.043

	Heavy metal and clay mineral analyses in the sediments of Upper Gulf of Thailand and their implications on sedimentary provenance and dispersion pattern
	Qiao, Shuqing 1; Shi, Xuefa 1; Fang, Xisheng 1; Liu, Shengfa 1; Kornkanitnan, Narumol 2; Gao, Jingjing 1; Zhu, Aimei 1; Hu, Limin 1; Yu, Yonggui 1
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2015-12-15
卷号	114 页码:488-496
关键词	Sediment source Metals Clay minerals Chao Phraya River Human activities
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2015.04.043
英文摘要	Forty-eight sediment samples collected in the Upper Gulf of Thailand (UGOT) and its nearby rivers including the Mae Klong, Tha Chin, Chao Phraya, and Bang Pakong were analyzed for grain size, heavy metals (Cu, Pb, Zn, Cr, and Cd), and clay minerals. The results reveal that fine-grained sediments with Mz < 30 mu m concentrate in the northern coastal area and coarse-grained fractions increase in a seaward direction. The grain size of the sediments mainly controls heavy metal concentrations. The concentrations of Cu, Pb, Zn, and Cr are higher in the northern part of UGOT, with ranges above 20, 23, 45, and 50 mg kg(-1), than in other sampling areas. Meanwhile, Cd content is greater than 120 mu g kg-(1) in sediments near the Bang Pakong River mouth and area between the Tha Chin and Mae Klong rivers mouth. The concentrations of heavy metals are higher than background data, and statistical analysis of geo-accumulation index indicates that the study area is either unpolluted to moderately polluted or moderately polluted by heavy metals. Our results also verify that illite is the dominant clay mineral, followed by kaolinite, chlorite, and smectite in terms of semi-quantitative content. Smectite/kaolinite can be used as an indicator to trace the riverine sediment in the study area, which present a counterclockwise dispersion pattern of sediment from the Chao Phraya River. (c) 2015 Elsevier Ltd. All rights reserved.
资助项目	Natural Science Foundation of China (NSFC)[41206055]
WOS关键词	ACCUMULATION RATES ; RIVER ESTUARY ; POLLUTION ; HISTORY ; EROSION ; CONTAMINANTS ; COAST
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000367857800006
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26747]
专题	自然资源部第一海洋研究所
通讯作者	Qiao, Shuqing
作者单位	1.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China 2.Marine & Coastal Resources Res Ctr, Dept Marine & Coastal Resources, Muang 7400, Samut Sakhon, Thailand
推荐引用方式 GB/T 7714	Qiao, Shuqing,Shi, Xuefa,Fang, Xisheng,et al. Heavy metal and clay mineral analyses in the sediments of Upper Gulf of Thailand and their implications on sedimentary provenance and dispersion pattern[J]. JOURNAL OF ASIAN EARTH SCIENCES,2015,114:488-496.
APA	Qiao, Shuqing.,Shi, Xuefa.,Fang, Xisheng.,Liu, Shengfa.,Kornkanitnan, Narumol.,...&Yu, Yonggui.(2015).Heavy metal and clay mineral analyses in the sediments of Upper Gulf of Thailand and their implications on sedimentary provenance and dispersion pattern.JOURNAL OF ASIAN EARTH SCIENCES,114,488-496.
MLA	Qiao, Shuqing,et al."Heavy metal and clay mineral analyses in the sediments of Upper Gulf of Thailand and their implications on sedimentary provenance and dispersion pattern".JOURNAL OF ASIAN EARTH SCIENCES 114(2015):488-496.