A rapid analytical procedure combining infrared-and ultraviolet-spectrophotometric techniques has been developed for the quantitative determination of 0.1%–15% phenanthrene in industrial grade anthracene. In principle, an infrared survey of the sample is obtained in a potassium
bromide matrix and the relative band intensities are calculated at 1315 cm−1 (7.60 μ) for anthracene and at 822 cm−1 (12.17 μ) for phenanthrene. By using this band ratio in conjunction with the anthracene content as previously determined by a standard
ultraviolet-spectrophotometric procedure, the phenanthrene concentration is calculated.
Toms River Chemical Corporation, Toms River, New Jersey 08753; present address: CIBA Corporation, Toms River, New Jersey
Publication date: July 1, 1968
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