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首页> 外文期刊>Estuarine Coastal and Shelf Science >Secondary grain-size effects on Li and Cs concentrations and appropriate normalization procedures for coastal sediments
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Secondary grain-size effects on Li and Cs concentrations and appropriate normalization procedures for coastal sediments

机译：次生粒度对Li和Cs浓度的影响以及沿海沉积物的适当归一化程序

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摘要

The sediment grain-size effect (GSE), a fundamental factor relevant to the interpretation of elemental concentrations and isotopic compositions, has been normalized using conservative elements such as aluminum (Al), cesium (Cs), and lithium (Li) (C-(Al,C- Cs,C- Li)), which serve as proxies for the natural metal controlling variables of grain size, mineralogy, and organic matter. However, a secondary GSE reportedly remains even after compensation by the Al-normalization procedure, particularly for the concentrations of transition metals (C-T.M). This secondary effect also occurred in the C-(Li,C- Cs)/C-Al ratios of the Korean coastal sediments examined in this study. The primary and secondary GSEs on Cs and Li concentrations can be explained by the quartz-dilution effect and the Cs- and Li-incorporation effect of phyllosilicate minerals, respectively, based on a model involving three component end-members: a Cs and Li-free sand-dominated sediment component consisting mostly of quartz and feldspar, a Cs- and Li bearing silt-dominated component of mica, and a Cs- and Li-enriched clay-dominated component of illite. Although the primary and secondary GSEs on the concentrations of transition metals (particularly Cu and Ni) in coastal sediments might be normalized by dividing the metal concentrations by the square of the Al concentration (C-T.M/(C-Al)(2)), the GSEs can also be normalized by dividing the concentrations by the exact Cs (or Li) concentration (C-T.M/C-Cs). (C) 2016 Elsevier Ltd. All rights reserved.
机译：沉积物粒度效应（GSE）是与元素浓度和同位素组成的解释有关的基本因素，已使用诸如铝（Al），铯（Cs）和锂（Li）（C- （Al，C-Cs，C-Li）），作为天然金属控制晶粒尺寸，矿物学和有机质控制变量的代理。然而，据报道，即使在通过Al归一化程序进行补偿后，仍存在次要GSE，特别是对于过渡金属（C-T.M）的浓度。在本研究中，韩国沿海沉积物的C-（Li，C-Cs）/ C-Al比也发生了这种次要作用。基于包含三个组分末端成员的模型，分别通过层状硅酸盐矿物的石英稀释效应和Cs和Li掺入效应可以解释Cs和Li浓度的主要和次要GSE。游离砂为主的沉积物成分，主要由石英和长石，云母中Cs和Li含粉砂为主的成分，伊利石中Cs和Li富集粘土的成分组成。尽管可以通过将金属浓度除以铝浓度的平方来归一化沿海沉积物中过渡金属（特别是铜和镍）浓度的主要和次要GSE（CT.M /（C-Al）（2）） ，也可以通过将浓度除以确切的Cs（或Li）浓度（CT.M / C-Cs）来归一化GSE。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2016年第20期|57-61|共5页
  • 作者

    Jung Hoisoo; Lim Dhongil; Xu Zhaokai; Jeong Kapsik;

  • 作者单位

    Korea Inst Ocean Sci & Technol, Geol & Geophys Div, 787 Haean Ro, Ansan 426744, South Korea;

    Korea Inst Ocean Sci & Technol, South Sea Res Inst, Geoje 656830, South Korea|Univ Sci & Technol, Dept Marine Environm Sci, Daejeon 305320, South Korea;

    Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China;

    Korea Inst Ocean Sci & Technol, Geol & Geophys Div, 787 Haean Ro, Ansan 426744, South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Coastal sediments; Grain-size proxy; Metal concentrations; Yellow sea;

    机译：沿海沉积物;粒度代用;金属浓度;黄海;

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