铅同位素的生物地球化学分布和分馏的全面综述，用于在不同的交互式环境隔室中进行溯源。,Science of the Total Environment

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铅同位素的生物地球化学分布和分馏的全面综述，用于在不同的交互式环境隔室中进行溯源。
Science of the Total Environment ( IF 8.2 ) Pub Date : 2019-11-27 , DOI: 10.1016/j.scitotenv.2019.135658
Ayesha Imtiyaz Cheema ₁ , Guijian Liu ₁ , Balal Yousaf ₂ , Qumber Abbas ₂ , Huihui Zhou ₂

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铅（Pb）是一种非必需且极有害的金属元素，其生物地球化学循环主要受到人类活动的极大影响。这种普遍存在的污染物在陆地环境中的引入和富集历史悠久，并且由于其即使在极低的暴露水平下对活生物体的不利健康影响，也受到了越来越多的关注。其致死效应可根据地球环境中的大气沉积，命运和铅同位素（即204Pb，206Pb，207Pb和208Pb）的分布而变化很大。因此，有必要了解Pb的沉积行为和转化机理，以及影响陆室中Pb同位素组成的因素。由于Pb同位素馏分具有持久性，无论土壤和生物圈中其他相互联系的陆地隔间正在进行的生物地球化学过程如何，都使铅同位素比（Pb-IRs）更可识别为追踪源的有力和有效工具，并有助于发现相关源迁移和转型过程。这篇综述讨论了在各种陆生小室中追踪铅的迁移途径和分布的最新进展，并考虑到铅的来源鉴定，杂种陆生小室之间的转化以及土壤中的解毒机理，研究了调节铅同位素地球化学的过程。工厂系统。此外，该简编还揭示了各种陆室中的Pb池在Pb同位素分馏方面有所不同。

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A comprehensive review of biogeochemical distribution and fractionation of lead isotopes for source tracing in distinct interactive environmental compartments.

Lead (Pb) is a non-essential and extremely noxious metallic-element whose biogeochemical cycle has been influenced predominantly by increasing human activities to a great extent. The introduction and enrichment of this ubiquitous contaminant in the terrestrial-environment has a long history and getting more attention due to its adverse health effects to living organisms even at very low exposure levels. Its lethal-effects can vary widely depending on the atmospheric-depositions, fates and distribution of Pb isotopes (i.e., 204Pb, 206Pb, 207Pb &208Pb) in the terrestrial-environment. Thus, it is essential to understand the depositional behavior and transformation mechanism of Pb and the factors affecting Pb isotopes composition in the terrestrial-compartments. Owing to the persistence nature of Pb-isotopic fractions, regardless of ongoing biogeochemical-processes taking place in soils and in other interlinked terrestrial-compartments of the biosphere makes Pb isotope ratios (Pb-IRs) more recognizable as a powerful and an efficient-tool for tracing the source(s) and helped uncover pertinent migration and transformation processes. This review discusses the ongoing developments in tracing migration pathway and distribution of lead in various terrestrial-compartments and investigates the processes regulating the Pb isotope geochemistry taking into account the source identification of lead, its transformation among miscellaneous terrestrial-compartments and detoxification mechanism in soil-plant system. Additionally, this compendium reveals that Pb-pools in various terrestrial-compartments differ in Pb isotopic fractionations. In order to improve understanding of partition behaviors and biogeochemical pathways of Pb isotope in the terrestrial environment, future works should involve investigation of changes in Pb isotopic compositions during weathering processes and atmospheric-biological sub-cycles.

更新日期：2019-11-28

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