酸性铬兰K与锡(Ⅱ)的光度法研究  

Spectrophotometric study on acid chrome blue K and Tin(Ⅱ)

作　　者：何珺 阮琼[1] 刘诚 盛云程 邝鸿福 He Jun;Ruan Qiong;Liu Cheng;Sheng Yuncheng;Kuang Hongfu(School of Chemistry and Chemical Engineering,Yunnan Normal University,Kunming 650500,Yunnan)

机构地区：[1]云南师范大学化学化工学院,云南昆明650500

出　　处：《云南化工》2020年第6期69-70,73,共3页Yunnan Chemical Technology

摘　　要：研究了在碱性介质和Tween-20存在下,酸性铬兰K(ACBK)与锡(Ⅱ)显色的光度法研究。结果表明,生成的玫瑰红色络合物在波长λmax=508nm处有最大吸收,ε达到2.131×10^6L·mol^-1·cm^-1,线性范围在0~1.0μg/50mL范围内符合朗伯-比耳定律。该显色体系稳定,快捷高效,结果可靠,方法用于样品中微量锡(Ⅱ)含量的测定,结果满意。In the presence of Tween-20 and alkaline medium,acid chrome blue K(ACBK)and TinⅡwere studied by spectrophotometry.The results show that the Rose Red Complex has the maximum absorption at 508 nm.ε=2.131×10^6·mol^-1·cm^-1.The Linear Range is 0-1.0μg/50 mL,which accords with Johann Heinrich Lambert’s law.The method has been applied to the determination of Trace Tin II in samples with satisfactory results.

关 键 词：锡(Ⅱ) 酸性铬兰K 分光光度法 

分 类 号：TQ427.26[化学工程]