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学科主题: Environmental Sciences
题名: Pt and Pd in sediments from the Pearl River Estuary, South China: background levels, distribution, and source
作者: Zhong, LF ; Yan, W ; Li, J ; Tu, XL ; Liu, BM ; Xia, Z
通讯作者: wyan@scsio.ac.cn
关键词: Platinum ; Palladium ; Background ; Distribution ; Vehicle exhaust catalyst ; Sediment ; Pearl River Estuary
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
发表日期: 2012
卷: 19, 期:4, 页:1305-1314
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
项目归属: 海洋地质
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.
语种: 英语
WOS记录号: WOS:000303547200034
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10341
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Zhong, LF; Yan, W; Li, J; Tu, XL; Liu, BM; Xia, Z.Pt and Pd in sediments from the Pearl River Estuary, South China: background levels, distribution, and source,ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2012,19(4):1305-1314
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