TY - GEN AU - Aksu,A. TI - 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 SN - 0025-326X AV - TD178 PY - 2013/// PB - Pergamon-Elsevıer Scıence Ltd KW - Near East University Article KW - Yakın Doğu Üniversitesi Makale KW - Environmental sciences KW - Oxidation-reduction potential (orp) KW - Nernst equation KW - Electrostatic activity coefficient (F-el) KW - Selenıum N2 - 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. (C) 2012 Elsevier Ltd. All rights reserved UR - http://library.neu.edu.tr:2048/login?url=http://dx.doi.org/10.1016/j.marpolbul.2012.11.002 ER -