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Spectrophotometric determination of alpha naphthol beta naphthol and oxine in aqueous solution


, : Spectrophotometric determination of alpha naphthol beta naphthol and oxine in aqueous solution. Microchemical Journal 33(1): 78-80

Diazotized orthanilic acid reagent has been devised as a novel chromogen for the trace determination of .alpha.-naphthol, .beta.-naphthol, and oxine in aqueous solution. The developed method is characterized by simplicity and rapidness and does not resort to either temperature control or solvent extraction.

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Related references

Davidek J.; Seifert J., 1971: Polarographic determination of alpha naphthol and beta naphthol. Sbornik Vysoke Skoly Chemicko-Technologicke v Praze E Potraviny 30: 7-16

Stein C., 1970: Thin layer chromatography and spectrophotometric determination of 1 4 2 5 di methoxyphenylazo 2 5 dimethoxyphenylazo 2 naphthol and 1 1 2 2 5 5 tetra methoxy 4 4 biphenylenebisazo di 2 naphthol in citrus red no 2. Journal of the Association of Official Analytical Chemists 53(1): 26-28

Wu, D.; Hurtubise, R.J., 1993: Fluorescence properties of 1-naphthol, 2-naphthol and 1,2,3,4-tetrahydronaphthol in aqueous alcohol solvents with and without beta-cyclodextrin. The fluorescence properties of 1-naphthol, 2-naphthol and 1,2,3,4-tetrahydronaphthol were obtained in binary aqueous-alcohol solvents with and without beta-cyclodextrin. The fluorescence of both the molecular and anionic forms of 1-naphthol and 2-...

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Stein, C., 1970: TLC and spectrophotometric determination of 1(4-(2,5-dimethoxyphenylazo)-2,5-dimethoxyphenylazo)-2-naphthol and 1,1-(2,2,5,5-tetramethoxy-4,4-biphenylenebisazo)-di-2-naphthol in Citrus Red No. 2

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Christian, G.D., 1969: Spectrophotometric determination of tartaric acid with beta-naphthol. Tartaric acid (50-800 mug) is reacted with beta-naphthol (5 mg) in 90 % sulphuric acid (2 ml) for 30 min on a steam-bath. The solution is cooled and diluted to 25 ml with 90% sulphuric acid and the absorbance is measured at 603 nm. Several absorpt...

Al-Shihry, S.S., 2005: Spectroscopic studies of inclusion complexes of 1-naphthol-4-sulfonate with beta-cyclodextrin in aqueous solution. The photophysical properties of 1-naphthol-4-sulfonate (1N4S) in some solvents and in aqueous beta-cyclodextrin solution have been investigated. The effect of beta-cyclodextrin on the fluorescence quantum yield and on the proton transfer is examin...

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