Liu Qingye, Lin Chenyin, Zhang Xinghui, Wen Guiqing, Liang Aihui
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, College of Environment and Resource, Guangxi Normal University, Guangxi, Guilin, 541004, China.
Luminescence. 2014 Dec;29(8):1102-6. doi: 10.1002/bio.2665. Epub 2014 Apr 14.
The ozone in an air sample was trapped by H3 BO3 -LK solution to produce iodine (I2) that interacted with excess I(-) to form I3(-). In pH 4.0 acetate buffer solutions, the I3(-) reacted with acridine red to form acridine red-I3 ion association particles that resulted in the fluorescence peak decreased at 553 nm. The decreased value ΔF553 nm is linear to the O3 concentration in the range 0.08-53.3 × 10(-6) mol/L, with a detection limit of 4 × 10(-8) mol/L. This fluorescence method was used to determine ozone in air samples, and the results were in agreement with that of indigo carmine spectrophotometry.
