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Comparison of Analytical Procedures for Boron
This article discusses a study to find a rapid, simple, and sensitive procedure for the determination of boron in various types of surface waters. Many compounds were found to be colorimetric reagents for boron, and four were selected for further study. They include the following: the reaction with 1, 1'‐dianthrimide progresses slowly, requiring 3 hrs. for maximum color development, temperature must be closely controlled at 90°C; the carmine colorimetric method does not require temperature control, but is nearly as time consuming as the 1, 1'‐dianthrimide procedure, both reagents require concentrated sulfuric acid as a solvent; the Victoria Violet reaction takes place in aqueous solution without close temperature control, different concentrations of boron produce an absorption peak at varying wavelengths, which makes the use of a double‐beam recording spectrophotometer nearly mandatory; and, the procedure with curcumin uses a minimal amount of sample and forms an end product that is soluble in alcohol. A water bath controlled at 55°C is the only equipment required. The method produces satisfactory results in various types of surface waters.
Comparison of Analytical Procedures for Boron
This article discusses a study to find a rapid, simple, and sensitive procedure for the determination of boron in various types of surface waters. Many compounds were found to be colorimetric reagents for boron, and four were selected for further study. They include the following: the reaction with 1, 1'‐dianthrimide progresses slowly, requiring 3 hrs. for maximum color development, temperature must be closely controlled at 90°C; the carmine colorimetric method does not require temperature control, but is nearly as time consuming as the 1, 1'‐dianthrimide procedure, both reagents require concentrated sulfuric acid as a solvent; the Victoria Violet reaction takes place in aqueous solution without close temperature control, different concentrations of boron produce an absorption peak at varying wavelengths, which makes the use of a double‐beam recording spectrophotometer nearly mandatory; and, the procedure with curcumin uses a minimal amount of sample and forms an end product that is soluble in alcohol. A water bath controlled at 55°C is the only equipment required. The method produces satisfactory results in various types of surface waters.
Comparison of Analytical Procedures for Boron
Lishka, Raymond J. (author)
Journal ‐ American Water Works Association ; 53 ; 1517-1522
1961-12-01
6 pages
Article (Journal)
Electronic Resource
English
Color , Boron , Surface Water , Absorption , Temperature , Sulfuric Acid , Alcohols
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