Chemical Factors that Influence the Availability of Iron and Manganese in Aqueous Systems

Research Article| February 01, 1972 Chemical Factors that Influence the Availability of Iron and Manganese in Aqueous Systems JOHN D HEM JOHN D HEM U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar Author and Article Information JOHN D HEM U.S. Geological Survey, Menlo Park, California 94025 Publisher: Geological Society of America Received: 09 Jun 1971 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1972, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1972) 83 (2): 443–450. https://doi.org/10.1130/0016-7606(1972)83443:CFTITA2.0.CO;2 Article history Received: 09 Jun 1971 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation JOHN D HEM; Chemical Factors that Influence the Availability of Iron and Manganese in Aqueous Systems. GSA Bulletin 1972;; 83 (2): 443–450. doi: https://doi.org/10.1130/0016-7606(1972)83443:CFTITA2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract The principal factors affecting aqueous chemical behavior of iron and manganese are shown in Eh-pH diagrams, designed to show predominant solute species, stable solid forms and solubility. Simple systems which contain water and the metal, and more complicated systems which contain fixed total amounts of one to four additional anions are considered. Relatively small shifts in Eh or pH can greatly change the equilibrium solubility of the metals. Some complexes, especially ferric fluoride and probably organic ferrous and ferric complexes, may strongly influence the solubility of iron. Because iron and manganese have low solubilities in oxidizing systems at pH levels near or little above neutrality, small shifts in Eh or pH, and complexing effects, may be very important in making the metals available to plants and animals. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.