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本文试验了稀土金属中钨的分光光度法。在0.8N盐酸介质中。钨(Ⅵ)与水相基萤光酮(SAF)、溴化十六烷基三甲基铵(CTMAB)生成稳定的黄色三元络合物。其λmax=518nm、ε_(518)=1.48×10~5.0～20微克钨/25毫升符合比耳定律。测定下限为0.005%,RSD<5%。
This paper tested rare earth tungsten in the spectrophotometry. In 0.8 N hydrochloric acid medium. Tungsten (Ⅵ) forms a stable yellow ternary complex with aqueous fluoridone (SAF) and cetyltrimethylammonium bromide (CTMAB). Its λmax = 518nm, ε_ (518) = 1.48 × 10 ~ 5.0 ~ 20 μg tungsten / 25 ml is in accordance with Beer’s Law. The lower limit of determination was 0.005% with RSD <5%.