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学科主题: Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear
题名: High-precision analysis on annual variations of heavy metals, lead isotopes and rare earth elements in mangrove tree rings by inductively coupled plasma mass spectrometry
作者: Yu, KF ; Kamber, BS ; Lawrence, MG ; Greig, A ; Zhao, JX
通讯作者: kefuyu@scsio.ac.cn
关键词: trace elements ; Pb isotopes ; rare earth elements ; tree ring ; mangrove ; human activity
刊名: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
发表日期: 2007
卷: 255, 期:2, 页:399-408
收录类别: sci
部门归属: Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China; Univ Queensland, CMM, Radiogen Isotope Lab, Brisbane, Qld 4072, Australia; Laurentian Univ, Dept Earth Sci, Sudbury, ON P3E 2C6, Canada; Univ Melbourne, Sch Earth Sci, Parkville, Vic 3010, Australia
项目归属: 海洋地质
摘要: Annual variations from 1982 to 1999 of a wide range of trace elements and reconnaissance Pb isotopes (Pb-207/Pb-206 and Pb-208/Pb-206) were analyzed by solution ICP-MS on digested ash from mangrove Rhizophora apiculata, obtained from Leizhou Peninsula, along northern coast of South China Sea. The concentrations of the majority of elements show a weak, declining trend with growth from 1982 to 1999, punctuated by several high concentration spikes. The declining trends are positively correlated with ring width and negatively correlated with inferred water-use efficiency, suggesting a physiological control over metal-uptake in this species. The episodic metal concentration-peaks cannot be interpreted with lateral movement or growth activities and appear to be related to environmental pollution events. Pb isotope ratios for most samples plot along the 'Chinese Pb line' and clearly document the importance of gasoline Pb as a source of contaminant. Shale-normalised REE + Y patterns are relatively flat and consistent across the growth period, with all patterns showing a positive Cc anomaly and elevated Y/Ho ratio. The positive Ce anomaly is observed regardless of the choice of normaliser, in contrast to previously reported REE patterns for terrestrial and marine plants. This pilot study of trace element, REE + Y and Pb isotope distribution in mangrove tree rings indicates the potential use of mangroves as monitors of historical environmental change. (c) 2006 Elsevier B.V. All rights reserved.
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WOS记录号: WOS:000245491900016
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4500
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Yu, KF; Kamber, BS; Lawrence, MG; Greig, A; Zhao, JX.High-precision analysis on annual variations of heavy metals, lead isotopes and rare earth elements in mangrove tree rings by inductively coupled plasma mass spectrometry,NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2007,255(2):399-408
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文件名: High-precision analysis on annual variations of heavy metals, lead isotopes and rare earth elements in mangrove tree rings by inductively coupled plasma mass spectrometry .pdf
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