Spectrophotometric Determination of Primary Amines in Aqueous Solution with Copper-(Ethylenedinitrilo)tetraacetic Acid.

1964 ◽  
Vol 36 (1) ◽  
pp. 208-210 ◽  
Author(s):  
I. M. Citron ◽  
Allan. Mills
Keyword(s):  
Aqueous Solution ◽  
Spectrophotometric Determination ◽  
Primary Amines ◽  
Tetraacetic Acid

Spectrophotometric Determination of Cyclamate in Foods: NMKL Collaborative Study

1987 ◽  
Vol 70 (3) ◽  
pp. 588-590
Author(s):  
Anna-Maija K Sjoberg ◽  
Timo A Alanko
Keyword(s):  
Aqueous Solution ◽  
Ethyl Acetate ◽  
Spectrophotometric Determination ◽  
Spectrophotometric Method ◽  
Collaborative Study ◽  
Soft Drinks ◽  
Uv Absorption ◽  
Acidic Aqueous Solution ◽  
Coefficients Of Variation

Abstract A spectrophotometric method for the determination of cyclamate was collaboratively studied in 9 laboratories. Ethyl acetate is added to extract cyclamate from acidic aqueous solution into water, and the cyclamate is then quantitatively converted to /V,./V-dichlorocyclohexylamine by adding excess hypochlorite. A',A'-Dichlorocyclohexylamine is determined by measuring its UV absorption at 314 nm. Six samples, 3 soft drinks with cyclamate levels of 0.36-0.47 g/kg and 3 jams with levels of 1.23-1.50 g/kg, were included in the study. Average recoveries of cyclamate were 99.7% in the soft drinks and 103.8% in the jams. Reproducibility coefficients of variation were 6.7% for the soft drinks and 4.4% for the jams.

Diazotised anthranilic acid as a reagent for the spectrophotometric determination of ethyl acetoacetate in aqueous solution

The Analyst ◽  
1984 ◽  
Vol 109 (7) ◽  
pp. 955 ◽  
Author(s):  
Samir Abdul Rahim ◽  
Wadala Abdulv Aziz Bashir ◽  
Batool Bashir Ibraheem
Keyword(s):  
Aqueous Solution ◽  
Spectrophotometric Determination ◽  
Anthranilic Acid ◽  
Ethyl Acetoacetate
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