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Pt and Pd in sediments from the Pearl River Estuary, South China: background levels, distribution, and source
Zhong, LF; Yan, W; Li, J; Tu, XL; Liu, BM; Xia, Z; wyan@scsio.ac.cn
2012
发表期刊ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
卷号19期号:4页码:1305-1314
摘要This study assessed the concentrations of platinum (Pt) and palladium (Pd) in surface sediments and sedimentary cores collected from the Pearl River Estuary with a view of evaluating the distribution, background levels, possible sources, and contamination level of anthropogenic Pt and Pd. Thirty-six samples of surface sediments and 12 samples from sedimentary cores were collected. Al2O3 was analyzed on fused glass disks by X-ray fluorescence spectrometer. Heavy metal elements were measured by inductively coupled plasma-mass spectrometry. Pt and Pd were separated from the sample matrix by anion exchange chromatography and subsequent solvent extraction after samples had been digested in Carius tubes using aqua regia. The analysis of Pt and Pd was performed by isotopic dilution-inductively coupled plasma-mass spectrometry. Pt and Pd concentrations in surface sediments were 0.28-2.11 and 0.39-38.30 ng/g, respectively, and Pt and Pd concentrations in sedimentary cores were 0.19-1.18 and 0.15-1.76 ng/g, respectively. Background values of Pt and Pd were 0.20-1.17 and 0.10-1.34 ng/g, respectively. The spatial distribution of the enrichment factor differed between Pt and Pd in surface sediments. Down-core variations in Pt, Pd, and other heavy metal elements were similar in all cases and were related to sediment type. Some of the Pt and Pt in surface samples were derived from anthropogenic emissions. Pt and Pd were delivered to the sediment by fluvial input. In addition to vehicle exhaust catalysts, Pt and Pd were derived from other sources (e.g., industrial process). An important post-burial remobilization process of Pt and Pd is likely to be particle mixing by billows caused by typhoon.
部门归属[Zhong, Li-feng; Yan, Wen] Chinese Acad Sci, S China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Li, Jie; Tu, Xiang-lin; Liu, Bao-ming] Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China; [Xia, Zhen] Guangzhou Marine Geol Survey, Guangzhou 510760, Guangdong, Peoples R China
关键词Platinum Palladium Background Distribution Vehicle Exhaust Catalyst Sediment Pearl River Estuary
学科领域Environmental Sciences
语种英语
资助项目海洋地质
WOS记录号WOS:000303547200034
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10341
专题中科院边缘海地质重点实验室
通讯作者wyan@scsio.ac.cn
推荐引用方式
GB/T 7714
Zhong, LF,Yan, W,Li, J,et al. Pt and Pd in sediments from the Pearl River Estuary, South China: background levels, distribution, and source[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2012,19(4):1305-1314.
APA Zhong, LF.,Yan, W.,Li, J.,Tu, XL.,Liu, BM.,...&wyan@scsio.ac.cn.(2012).Pt and Pd in sediments from the Pearl River Estuary, South China: background levels, distribution, and source.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,19(4),1305-1314.
MLA Zhong, LF,et al."Pt and Pd in sediments from the Pearl River Estuary, South China: background levels, distribution, and source".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 19.4(2012):1305-1314.
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