分光光度法测定铬黑T解离常数实验设计

孙瑞卿, 许紫婷, 陈珠灵, 林佳丽

Experimental Design on the Determination of Dissociation Constants of Eriochrome Black T by Spectrophotometry

Ruiqing Sun, Ziting Xu, Zhuling Chen, Jiali Lin

表4 455 nm处铬黑T溶液吸光度及计算

样品编号 pH A(λ455 nm) $ \lg \left( {\frac{{{A_0} - {A_1}}}{{{A_1} - {A_2}}}} \right) $ 样品编号 pH A(λ455 nm) $ \lg \left( {\frac{{{A_0} - {A_1}}}{{{A_1} - {A_2}}}} \right) $ 16 7.85 0.254 23 11.58 0.375 ?0.100 17 8.63 0.252 24 11.76 0.407 0.1 18 8.97 0.256 ?1.840 25 11.98 0.447 0.371 19 10.06 0.275 ?1.040 26 12.27 0.467 0.533 20 10.42 0.28 ?0.950 27 12.58 0.493 0.814 21 10.84 0.294 ?0.750 28 12.81 0.51 1.111 22 11.26 0.333 ?0.390 29 12.98 0.53