薄层光密度法测定低含量的N－（α－萘基）咔唑和N－（β－萘基）咔唑

TLC Densitometric Determination of N-(β-naphthyl)carbazole and N-(α-naphthyl) carbazole from Photo-induced S_(RN) 1 Reaction

测定了光诱导ＳＲＮ１反应生成的Ｎ－（α－萘基）咔唑和Ｎ－（β－萘基）咔唑。光化学反应产物用硅胶板展开，外标法定量，测定波长２８８ｎｍ，斑点的线性范围０～２μｇ，回收率１００．５％，相对标准偏差４．８％，Ｎ－（α－萘基）咔唑含量＜１％，Ｎ－（β－萘基）咔唑含量２．２６％。

Samples are developed on a silica gel TLC plate and the separated spots are scanned by TLC scanner of reflection mode,The said substances have been determined by this simple and accurate method,using external standard.