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1. Arsenate–Ferrihydrite Systems from Minutes to Months: A Macroscopic and IR Spectroscopic Study of an Elusive Equilibrium

Author:
Swedlund Peter J.; Holtkamp Hannah; Song Yantao; Daughney Christopher J.
Source:
Environmental Science & Technology 2014 v.48 no.5 pp. 2759-2765
ISSN:
1520-5851
Subject:
arsenic; equations; ferrihydrite; models; pH; sorption; spectral analysis
Abstract:
... Sorption by ferrihydrite is an important control on As(V) concentrations in many oxic aquatic systems. There are significant discrepancies in reported sorption constants (log(KAₛ)), which presents a problem for quantifying and understanding this important system. A review of reported ferrihydrite–As(V) sorption studies indicated a positive correlation between reaction time used in the experiments ...
DOI:
10.1021/es404742c