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2007•Journal of Zhengzhou UniversityRequires access

Determination of 2-methylnaphthalene and 2-methylnaphthoquinone-1,4 in reaction solution by UV spectrophotometry

Fu Wang

Open publisher page 1 citations

Abstract

Aim: To explore a new UV spectrophotometry method for the determination of 2-methylnaphthalene(2-MN) and 2-methylnaphthoquinone-1,4(2-MNQ) in reaction solution.Methods:According to UV spectral properties of 2-MN and 2-MNQ in anhydrous alcohol, the equivalence absorbency double-wavelength UV spectrophotometry was adopted, and 275.6 nm and 332.8 nm were selected as determination wavelengths. Results: The method was linear within the range of 7.776～46.656 mg/L of 2-MN and 6.882～41.291 mg/L of 2-MNQ. The average recoveries of 2-MN and 2-MNQ were 99.5% and 99.4%, respectively. The relative standard deviations were 1.29% and 1.07%, respectively. Conclusion: The contents of 2-MN and 2-MNQ could be obtained simultaneously without previous separation by this method, which is simple, rapid and accurate.

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Aim: To explore a new UV spectrophotometry method for the determination of 2-methylnaphthalene(2-MN) and 2-methylnaphthoquinone-1,4(2-MNQ) in reaction solution.Methods:According to UV spectral properties of 2-MN and 2-MNQ in anhydrous alcohol, the equivalence absorbency double-wavelength UV spectrophotometry was adopted, and 275.6 nm and 332.8 nm were selected as determination wavelengths. Results: The method was linear within the range of 7.776～46.656 mg/L of 2-MN and 6.882～41.291 mg/L of 2-MNQ. The average recoveries of 2-MN and 2-MNQ were 99.5% and 99.4%, respectively. The relative standard deviations were 1.29% and 1.07%, respectively. Conclusion: The contents of 2-MN and 2-MNQ could be obtained simultaneously without previous separation by this method, which is simple, rapid and accurate.

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Available abstract

Aim: To explore a new UV spectrophotometry method for the determination of 2-methylnaphthalene(2-MN) and 2-methylnaphthoquinone-1,4(2-MNQ) in reaction solution.Methods:According to UV spectral properties of 2-MN and 2-MNQ in anhydrous alcohol, the equivalence absorbency double-wavelength UV spectrophotometry was adopted, and 275.6 nm and 332.8 nm were selected as determination wavelengths. Results: The method was linear within the range of 7.776～46.656 mg/L of 2-MN and 6.882～41.291 mg/L of 2-MNQ. The average recoveries of 2-MN and 2-MNQ were 99.5% and 99.4%, respectively. The relative standard deviations were 1.29% and 1.07%, respectively. Conclusion: The contents of 2-MN and 2-MNQ could be obtained simultaneously without previous separation by this method, which is simple, rapid and accurate.

Key concepts: Spectrophotometry, Chemistry, Anhydrous, Analytical Chemistry (journal), Chromatography, Linear range, Relative standard deviation, Detection limit

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