Accession Number:

ADA361192

Title:

Evaluation of Colorimetric Methods for Measuring Reduced (Ferrous) Iron

Descriptive Note:

Technical note

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS

Personal Author(s):

• Faulkner, Stephen P.
• Hintze, Paul E.
• Ashby, Steven L.

Report Date:

1999-03-01

Pagination or Media Count:

12.0

Abstract:

This technical note describes a comparative study of colorimetric methods for real-time measurements of ferrous iron in reservoir tailwaters. Two methods were evaluated the 1,10 phenanthroline method for the Hach DR2000 spectrophotometer Hach Company, Loveland, CO and a laboratory method developed for field application using 3-2-pyridyl-5, 6-bis4-phenyl- sulfonic acid-1,2,4-triazine FerroZine and a portable Milton Roy Mini 20 spectrophotometer.

Descriptors:

• *IRON COMPOUNDS
• *WATER QUALITY
• *COLORIMETRIC ANALYSIS
• MEASUREMENT
• REAL TIME
• OXIDATION
• ORGANIC COMPOUNDS
• ARMY CORPS OF ENGINEERS
• PHENYL RADICALS
• TRIAZINES
• SULFONIC ACIDS
• SPECTROPHOTOMETERS

Subject Categories:

• Inorganic Chemistry
• Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE