CAJ | 학술논문

在阳离子表面活性剂溴化十六烷基三甲胺(CTMAB)存在下,研究了对氯苯基荧光酮(p-CPF)与锌的显色反应条件和光度性质.在pH=8.4的Na2HPO4-KH2PO4缓冲溶液中,锌与p-CPF形成1∶1的红色络合物,所形成的络合物的最大吸收波长位于568 nm处,表观摩尔吸光系数为7.20×104 L·mol-1·cm-1;红色络合物至少稳定10 h以上,锌含量在0～2.40 μg/5mL范围内符合比耳定律.拟定方法用于药物中微量锌的测定,结果满意.
재양리자표면활성제추화십륙완기삼갑알(CTMAB)존재하,연구료대록분기형광동(p-CPF)여자적현색반응조건화광도성질.재pH=8.4적Na2HPO4-KH2PO4완충용액중,자여p-CPF형성1∶1적홍색락합물,소형성적락합물적최대흡수파장위우568 nm처,표관마이흡광계수위7.20×104 L·mol-1·cm-1;홍색락합물지소은정10 h이상,자함량재0～2.40 μg/5mL범위내부합비이정률.의정방법용우약물중미량자적측정,결과만의.
In the presence of cationic surfactant cetyltrimethylammonium bromide(CTMAB), reaction conditions and photometric properties of p-chlorophenylfluorone (p-CPF) with zinc were studied. The results showed that absorption wavelength of p-CPF-Zn-CTMAB complex was 568 nm and the apparent molar absorptivity was 7.20×104 L·mol-1·cm-1 in the buffer solution (pH 8.4 of Na2HPO4-KH2PO4). The red complex was stable for 10 hours at least. Beer's law was obeyed when the content of zinc was in the range of 0～2.40 μg/5mL. The developed method has been applied to the determination of trace zinc in the medicine with satisfactory results.