Arsenic Occurrence and Fate in the Environment; A Geochemical Perspective
Arsenic Occurrence and Fate in the Environment; A Geochemical Perspective
复制标题
环境中砷的存在和归宿；
DOI：
10.4172/2157-7617.1000269
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
and Nikolopoulos
中科院分区：
文献类型：
--
作者：
Panagiotaras;and Nikolopoulos
环境中的砷矿物构成了环境中砷的主要来源。砷矿物与环境相互作用，导致它们溶解或形成次生矿物，或两者兼而有之。环境砷的分布由氧化还原条件、pH、离子可用性、吸附-解吸、溶解和生物活性方面的生物地球化学转化决定。环境中的砷主要被金属氧化物吸收，特别是铁（Fe）、铝（Al）和锰（Mn）的氧化物。这些被认为比 As(+3) 更容易结合 As(+5)。总吸附很大程度上取决于 pH 值。金属氧化物，例如水合铁、锰和铝的氧化物，是被吸附或共沉淀的砷的另外重要的汇。它们的溶解也取决于 pH 值。氧化还原电位和微生物活性。最终结果是将砷化学物质释放到环境中。这篇综述系统地汇编了控制环境中砷归宿的主要地球化学过程。本文试图编制可用于砷修复目的的成分的去除能力。
The arsenic minerals in the environment constitute the primary source of the environmentally occurring arsenic. The As minerals interact with the environment and this renders either their dissolution or the formation of secondary minerals, or both. The distribution of the environmental arsenic is determined by the biogeochemical transformations with respect to the redox conditions, the pH, the availability of ions, the adsorption-desorption, dissolution and the biological activity. The arsenic in the environment is sorbed primarily by metal oxides, especially the ones of iron (Fe), aluminum (Al) and manganese (Mn). These are thought to bind As(+5) readily than As(+3). The overall adsorption depends greatly on pH. Metal oxides such as the ones of hydrous ferric, manganese and aluminum are additional important sinks of arsenic that is adsorbed or co-precipitated. Their dissolution depends also on pH. The redox potential and the microbial activity. Final result is the release of arsenic chemical species into the environment. This review presents a systematic compilation of the major geochemical processes that govern arsenic fate in the environment. The paper attempts to compile the removal capacity of constituents which could be useful for the purpose of As remediation.
砷通过血红素加氧酶 1 依赖性机制促进体外血管生成
影响因子：
3.8
作者：
Meng, Dan;Wang, Xin;Shi, Xianglin
通讯作者：
Shi, Xianglin
影响因子：
--
作者：
Tan, ZS;Seshadri, S;Wolf, PA
通讯作者：
Wolf, PA