【摘要】 以纳米Pt/TiO2为光催化剂,光催化降解水中少量对氟苯氧乙酸,并用开路电位-时间曲线法测定反应2h时产生的氟离子含量,发现对氟苯氧乙酸的初始浓度与光催化生成氟离子的浓度成良好线性关系,从而建立了一种光催化降解-电化学联用测定水中少量对氟苯氧乙酸含量的新方法,方法线性范围为1.0×10-4~1.0×10-6 mol·L-1(R2=0.9999)。该方法适用于分析水溶液中少量的对氟苯氧乙酸。更多还原

【Abstract】 In the presence of Pt/TiO2,the photocatalytic degradation of few p-Fluorophenoxyacetic acid in sewage has been studied.Photocatalytically generated fluorine ion at 2h was determined by open circuit potential-time curve method.The experiment shows that the concentration of photocatalytically generated flurine ion is linear to the initial concentration of p-fluorophenoxyacetic acid.Based on this,a photocatalytic-electrochemical method was proposed to determine a small amount of p-fluorophenoxyacetic acid in water.The regression equation of standard working curve was:y=13.685x-0.1665(R2=0.9999)and the linear range of the determination was 1.0×10-4- 1.0×10-6 mol·L-1.The method has been used to determine a small amount of p-fluorophenoxyacetic acid in water with satisfactory results.更多还原