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首页> 外文期刊>Analytical Sciences >Synchronous Fluorometric Determination of Trace Amounts Anthracene in Fluoranthene Using Dibenzofuran as a Zone-melting Medium for the Separation
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Synchronous Fluorometric Determination of Trace Amounts Anthracene in Fluoranthene Using Dibenzofuran as a Zone-melting Medium for the Separation

机译：以二苯并呋喃为区域熔融介质进行同步荧光法测定荧蒽中的痕量蒽

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Trace amounts of anthracene can be separated from fluoranthene and most of the concomitant impurities by a zone-melting technique using dibenzofuran as a zone-melting medium. Anthracene thus separated can be determined by synchronous fluorescence spectrometry without removal of dibenzofuran. The determination limit is 2ppm. After 100mg of a fluoranthene sample and 4g of purified dibenzofuran had been uniformly mixed, the mixture was charged in a glass tube with an i.d, of 4mm. The zone-pass was repeated 20 times with an upward travel at a speed of 100mm/h under constant stirring. The lower half of the zone-molten ingot was cut out exactly and dissolved in xylene. Anthracene could be determined from the synchronous fluorescence intensity at 384nm.
机译：通过使用二苯并呋喃作为区域熔融介质的区域熔融技术，可以将痕量的蒽与荧蒽和大多数伴随的杂质分离。如此分离的蒽可以通过同步荧光光谱法测定而无需除去二苯并呋喃。测定极限为2ppm。将100mg荧蒽样品和4g纯化的二苯并呋喃均匀混合后，将混合物装入i.d为4mm的玻璃管中。在恒定搅拌下，以100mm / h的速度向上移动，重复20次区域通过。精确切出熔融区域铸锭的下半部分，并溶解在二甲苯中。蒽可由384nm处的同步荧光强度确定。

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