Abstract
The behavior of iron(III) hydroxide was studied in order to clarify its role as a collector of the trace element molybdenum in sea water. Iron(III)hydroxide formed in sea water possesses a charge which is pH-dependent. At pH 4.0 the colloid has an apparent maximum positive-charge density and is able to adsorb molybdenum quantitatively as molybdate. Above pH 9 the charge is reversed and the iron(III) hydroxide no longer collects molybdate. Qualitative electrophoretic tests carried out in distilled water confirmed the positive and negative charge on the iron(III) hydroxide in acid and basic solution, respectively. At pH 10.0, calcium and magnesium salts coprecipitated molybdate in the presence or absence of iron (III) hydroxide. Procedures were worked out for the determination of molybdenum in sea water concentrated by iron(III) hydroxide at pH 4.0, and by calcium and magnesium salts at pH 10.0.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
