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我们合成了试剂2,3,4-三羟基-4′-磺酸-偶氮苯(TCAB): 铋与TCAB络合物溶液的吸光度与酸度及波长的关系见图示。铋络合物的最大吸收在460毫微米,试剂的最大吸收在380毫微米。
We synthesized the reagent 2,3,4-trihydroxy-4’-sulfonic acid-azobenzene (TCAB): The relationship between absorbance and acidity and wavelength of bismuth and TCAB complex solution is shown in the figure. The maximum absorption of the bismuth complex is 460 nm and the maximum absorption of the reagent is 380 nm.