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本文研究了在溴化十六烷基三甲基铵存在下，６，７－二羟基－２，４－二苯基苯骈吡喃氯化物与钨的胶束增敏反应，在０．１６～０．３０ｍｏｌ／Ｌ盐酸介质中，钨与ＤＤＰＢＣ生成红色配合物，其组成比为１：２，最大吸收峰在５１５ｎｍ处，摩尔吸光系数ε＝６．４７×１０￣４。含钨量０～１２μｇ／１０ｍＬ符合比尔定律。用于多种金属有机化合物中微量钨的测定，方法简单、快速、结果满意。
In this paper, micellar sensitization of 6,7-dihydroxy-2,4-diphenylbenzopyran chloride to tungsten in the presence of cetyltrimethylammonium bromide has been investigated. At 0.16 ~ 0.30mol / L hydrochloric acid medium, tungsten and DDPBC red complex, the composition ratio of 1: 2, the maximum absorption peak at 515nm, the molar extinction coefficient ε = 6.47 × 10 ~ 4. Beer’s law is obeyed when the content of tungsten is 0-12μg / 10mL. For a variety of metal organic compounds trace determination of tungsten, the method is simple, fast and satisfactory results.