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三羟基萤光酮类试剂已先后在比、日、苏和我国引起重视,其中丙基、二甲基、二磺苯基和水杨基萤光酮分析应用较广。近年国内在此方面发展很快,尤以卤代,硝基衍生物的报道为多。本文提出用香草基萤光酮在CTMAB存在下,不经分离和掩蔽直接测定数种铝合金中微量钛的新方法,灵敏度高,选择性好,精密度及准确度均令人满意,且简便、快速。这是三羟基萤光酮类试剂的又一新品种,且也开始获得成功的应用 1.最佳实验条件的选择试验证明,几种离子表面活性剂均有增敏作用,但以CTMAB效果最佳,在一定酸度下所形成之二元有色配合物对比度很小,灵敏度也极低,而在相同条件下,当CTMAB存在时则对比度较大(△λ=90nm),灵
Trihydroxyfluorescein ketones reagents have been in the ratio, Japan, the Soviet Union and our attention, of which propyl, dimethyl, disulfophenyl and salicyl fluorone analysis is widely used. In recent years, rapid development in this area in China, especially halogenated, nitro derivatives as much. In this paper, a new method for the direct determination of trace titanium in aluminum alloys without isolation and masking using vancomyl fluorone in the presence of CTMAB is presented. The method has the advantages of high sensitivity and selectivity, satisfactory precision and accuracy, and is simple and convenient ,fast. This is another new species of trihydroxyfluorone reagents, and also began to be successful application 1. The selection of the best experimental conditions Tests showed that several ionic surfactants have sensitizing effect, but CTMAB effect of the most The contrast of the binary colored complex formed under a certain acidity is very small and the sensitivity is very low. Under the same conditions, the contrast is larger when the presence of CTMAB (△ λ = 90nm)