Determination of ozone in aqueous by flow-injection analysis with chemiluminescence detection

Utilizing the phenomenon that himinol can be oxidized by the dissolved ozone to produce luminescence and a new method of using chemiluminescence to determine the concentration of ozone in aqueous was established in this study. Ozoue generated by an ozonator dissolved in distilled water by bubbling, which was diluted to different concentration ozone solutions by FI system. The CL emission result was directly proportional to the concentration of ozone in solution. The work curve of γ = 27. 65.8Ln ( X) - 192. 75, was acquired for the concentration range of ozone from 20 μ g/L to 65 μ g/L and the detection limit was 8. 5 μ g/L. Another work curve of γ =0. 0018x -23. 711 was also acquired for the high concentration of ozone from 0. 089 mg/L to 0. 890 mg/L. The concentration of ozone was measured by indigo method. An ozonated drinking water sample was analyzed through FIA-CL method. It shows that the result is credible and the method is convenient.