用间羧基偶氮氯膦和氯化十六烷基吡啶光度测定废水中钍

Determination of Thorium in Wastewater with CPAmK and Cetylpyridiniumchloride Photometry

研究了在氯化十六烷基吡啶（CPC）存在下,用间羧基偶氮氯膦（CPAmK）光度测钍的方法。在0.2mol·1^(-1)HCl介质中,并有表面活性剂CPC存在时,钍与CPAmK形成的配合物最大吸收峰在678nm处,摩尔吸光率为1.5×10~5,钍浓度在0～5μg/10ml范围内符合比耳定律。此方法应用于废水中钍的测定取得较满意的结果。

Under presence of cetylpyridinium chloride (CPC),the determination of thorium with photometry was studied. When the detective system is in the medium of 0.2 M HCI and the surfactant CPC exists, the maximum absorption peak of the combination of thorium and CPAmK is found at the wave length of 678 nm and the molar absorption rate is about 1.5×105. In the thorium concentration range of 0-5 μg/ 10ml, the determination conforms to the Beale-law. The result is favorable.