It is an urgent need to determine the concentration of ozone in atmosphere; however, most current methods are limited by large-scale equipments or complex procedures. Herein, a gas-liquid chemiluminescence (GL-CL)...
A novel method to achieve real-time and long-term continuous measurement of CO2 based on in situ synthesis of AuNPs on fabrics is reported. A heterogeneous CO2 detection method and the application of continuous catalytic chemiluminescence immobilized by nanoparticles were also developed.
The chemiluminescence (CL) reaction between ozone and 3,6-dihydroxynaphtha-2,7-disulphonate (DNDS) was found under alkaline conditions. Therefore, a novel CL system for ozone detection was established. The CL signal of the CL system is weak, and the CL signal is enhanced by adding nonionic surfactants. It was found that adding 16.4 g/l Triton X-100 can enhance the CL signal. The CL reagent activated by ultraviolet (UV) light produced a CL signal was nearly 10 times stronger than the CL reagent not activated by UV light; the CL signal was enhanced by adding 8 g/l NaHCO 3 to the CL reagent irradiated by UV light. Through the optimization of these test conditions, a high-selectivity, high-sensitivity online detection method for ozone CL was established. The linear range was 0.5-150 ppbv, and the limit of detection (LOD) was 0.092 ppbv (S/N = 3).
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