【摘要】 在含水量90％的非离子型微乳液-乳化剂OP/正丁醇/正庚烷/水中,以5-Br-PADAP为显色剂,吸光光度法测定镉,结果表明,络合物的λ_max为565nm,摩尔吸光系数达2.14×10⁵L·mol^-1cm^-1,与相同含水量的乳化剂OP胶束体系相比,测定灵敏度明显提高,试验条件有所改善,镉含量在0～8.0μg/10ml范围符合比耳定律。更多还原

【Abstract】 It is reported that in an nonionic microemulsified solution containing appropriate amounts of OP, n-butanol and n-heptane and 90% of water, the photometric reaction of cadmium （Ⅱ） with 5-Br-PADAP is remarkably sensitized as compared with that in a solution without n-butanol and n-heptane , The results of the photometric study obtained are as following: Absorption maxima of the complex: 565nm; Molar Absorptivity: 2.14×10⁵L ·mol^-1 ·cm^-1 ;Obeyance of Beer’s Law: 0⁸. Oμg/10ml. The method has been applied to the determination of cadmium in waste water samples with satisfactory results.更多还原