基于亨利定律的水中臭氧浓度检测方法研究

为提高水中臭氧(O3)浓度检测方法的普适性、准确性和便捷性,提出了一种新的非接触式的水中O3浓度检测方法.基于亨利定律(Henry's Law),采用电化学方法,建立空气中O3浓度与水中O3浓度的回归方程,从而推导出水中O3浓度.实验结果显示,水体O3传感器的检出限为0.02 mg/L,检测上限为0.40 mg/L,可...

Research on Detection Method of Ozone Concentration in Water Based on Henry's Law

In order to improve the universality, accuracy and convenience of the methods to detect the concentration of ozone in water, a new non-contact method for the determination of ozone in water was proposed in this paper. Based on the Henry''s law and electrochemical method, the regression equation of "ozone concentration in air-ozone concentration in water" was established, and the ozone concentration in water was deduced. The results showed that the detection limit of ozone sensor in water was 0.02 mg/L, the upper detection limit was 0.40 mg/L, the coefficient of determination R² is 0.998 9, the maximum value of relative error was 7.05%, the maximum value of RSD was 2.82%. Actual sample test results showed that the data measured by the water ozone detection sensor were in complete agreement with the data measured by the DPD ozone rapid determination kit. This method not only integrated the advantages of intelligent sensor technology, such as miniaturization, networking, real-time measurement, etc. , but also had low cost, simple structure, fast response time, and was suitable for the rapid detection of ozone concentration in water.