NDLI: Additional studies for the spectrophotometric measurement of iodine in water

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Additional studies for the spectrophotometric measurement of iodine in water

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1972
Description	Previous work in iodine spectroscopy is briefly reviewed. Continued studies of the direct spectrophotometric determination of aqueous iodine complexed with potassium iodide show that free iodine is optimally determined at the isosbestic point for these solutions. The effects on iodine determinations of turbidity and chemical substances (in trace amounts) is discussed and illustrated. At the levels tested, iodine measurements are not significantly altered by such substances. A preliminary design for an on-line, automated iodine monitor with eventual capability of operating also as a controller was analyzed and developed in detail with respect single beam colorimeter operating at two wavelengths (using a rotating filter wheel). A flow-through sample cell allows the instrument to operate continuously, except for momentary stop flow when measurements are made. The timed automatic cycling of the system may be interrupted whenever desired, for manual operation. An analog output signal permits controlling an iodine generator.
File Size	1153660
Page Count	40
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19730001445
Archival Resource Key	ark:/13960/t6450fk5t
Language	English
Publisher Date	1972-08-31
Access Restriction	Open
Subject Keyword	Chemistry Aqueous Solutions Measuring Instruments Potassium Iodides Chemical Reactions Colorimetry Spectrophotometry Iodine Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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