A simple and rapid method for the quanti
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P.G. Roughan
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Article
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1967
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Elsevier Science
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English
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The method described here is essentially a modification of the method of Dilley and Crane (1) but has the advantages of greater speed and simplicity and gives higher recoveries. ## MATERIALS Benzene, petroleum ether (S&80), diethyl ether, absolute ethanol, and acetone were all analytical reagent