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一种新方法可用于测定海洋系统中氧化还原活性物质(如 Se(IV)/Se(VI) 和 As(III)/As(V))的比例。

A new approach to determine the ratio of redox active species such as Se(IV)/Se(VI) and As(III)/As(V) in marine systems.

机构信息

Istanbul University, Marine Science and Management Institue, Chemical Oceanography, Vefa 34134, Turkey.

出版信息

Mar Pollut Bull. 2013 Feb 15;67(1-2):228-33. doi: 10.1016/j.marpolbul.2012.11.002. Epub 2012 Nov 30.

DOI:10.1016/j.marpolbul.2012.11.002
PMID:23201393
Abstract

The ratio of redox active species contributes to the researches about marine systems in many ways. Are marine systems reductant or oxidant? For this purpose, redox active species are analyzed by using high technology instrumental analyzers such as AAS, ICP, and HPLC. Then, all ion pair species are compared to each by calculating their ratios. These technologies are very expensive, and it takes long time to obtain the results. In this study, we suggested a basic method by using pH and Eh. Therefore, the Nernst equation expression was rearranged by using relative hydrogen (rH) and electrostatic activity coefficient (F(el)). Additionally, the ratio of the redox active ion pair species Se(IV)/Se(VI) and As(III)/As(V) was calculated.

摘要

氧化还原活性物质的比例在很多方面都有助于海洋系统的研究。海洋系统是还原剂还是氧化剂?为此,使用 AAS、ICP 和 HPLC 等高科技仪器分析器来分析氧化还原活性物质。然后,通过计算它们的比例来比较所有离子对物质。这些技术非常昂贵,而且需要很长时间才能获得结果。在这项研究中,我们建议使用 pH 和 Eh 来使用基本方法。因此,通过使用相对氢 (rH) 和静电活度系数 (F(el)) 来重新排列能斯特方程表达式。此外,还计算了氧化还原活性离子对物质 Se(IV)/Se(VI)和 As(III)/As(V)的比例。

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