催化分光光度法测定痕量苯酚

Determination of trace phenol by catalytic spectrotometry

目的：建立测定痕量苯酚的新方法。方法：基于硫酸介质中,苯酚能催化溴酸钾氧化茜素红的褪色反应,建立了催化分光光度法测定痕量苯酚的新方法。结果：方法的线性范围为0.08-1.20μg/m l,检出限0.046μg/m l。RSD为1.92%、2.24%,样品加标回收率为97.5%-104.0%。结论：该方法简便快速,常见物质干扰小,用于环境水样痕量苯酚的测定,结果满意。

Objective：To develop a simple and sensitive method for the determination of trace phenol in water samples of environment.Methods：Based on the catalytic effect of phenol for the oxidation of arizarin red（AR） by potassium bromate in sulphuric acid medium,a catalytic spectrophotometric method was proposed for the determination of trace phenol.Results：The linear range and the determination limit for phenol were 0.08～1.20 μg/ml and 0.046 μg/ml,respectively.The RSD was 1.92%,2.24%,The recovery rate was 97.5%-104.0%.Conclusion：It is quick and simple with little interference.It can be applied to the determination of trace phenol in water samples of environment with satisfactory results.