论文部分内容阅读
在硫酸介质中,四溴双酚A(T BBP-A)对Fenton反应产生的羟基自由基氧化藏红T的反应具有抑制作用,据此建立了分光光度法测定痕量四溴双酚A的新方法。探讨不同酸介质种类、硫酸溶液用量、FeSO4溶液用量、藏红T用量、过氧化氢用量、加热时间和加热温度等因素对反应体系的影响。在较佳实验条件下,方法的线性回归方程为:$A=-0.0005+2668.1C,相关系数r=0.9929,线性范围为5.0×10-6—3.2×10-4mg/mL,检出限为2.8×10-6mg/mL。将方法应用于实际样品的测定,加标实验回收率在86.7%—107%之间,相对标准偏差(RSD)为4.3%—5.1%。该方法具有操作简便、快速特点,测定结果令人满意。
In the sulfuric acid medium, tetrabromobisphenol A (T BBP-A) has an inhibitory effect on the reaction of hydroxyl radicals produced by the Fenton reaction to form the red tantalum T. A spectrophotometric method for the determination of trace tetrabromobisphenol A new method. The effects of different acid medium types, the amount of sulfuric acid solution, the amount of FeSO4 solution, the amount of safranin T, the amount of hydrogen peroxide, heating time and heating temperature on the reaction system were discussed. Under the optimal experimental conditions, the linear regression equation was: $ A = -0.0005 + 2668.1C, correlation coefficient r = 0.9929, the linear range was 5.0 × 10-6-3.2 × 10-4mg / mL, the detection limit was 2.8 × 10 -6 mg / mL. The method was applied to the determination of real samples. The recoveries of spiked experiments ranged from 86.7% to 107%, and the relative standard deviations (RSDs) ranged from 4.3% to 5.1%. The method has the advantages of easy operation and fast characteristic, and the determination result is satisfactory.