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研究了酚与MBTH形成的红色偶氮化合物的极谱行为。该化合物在氢氧化钠-硼酸介质中于—0.54V(vs.SCE)处呈现一个灵敏的吸附波,波高与酚浓度在0.01～1.5μg·ml~(-1)范围内呈良好线性关系。方法简便快速,选择性较好。用于水和空气样品中的酚测定,结果满意。
The polarographic behavior of red azo compounds formed by phenol and MBTH was studied. The compound showed a sensitive adsorption wave at -0.54V (vs.SCE) in sodium hydroxide - boric acid medium. The wave height and the phenol concentration showed a good linearity in the range of 0.01-1.5μg · ml -1. The method is simple and fast, the selectivity is better. The results were satisfactory for the phenol determination in water and air samples.