A simple and sensitive fluorescence method for the determination of trace ozone in air using acridine red as a probe |
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| Authors: | Qingye Liu Chenyin Lin Xinghui Zhang Guiqing Wen Aihui Liang |
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| Institution: | Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, College of Environment and Resource, Guangxi Normal University, Guilin, China |
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| Abstract: | The ozone in an air sample was trapped by H3BO3‐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. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | ozone acridine red associated particle fluorescence method |
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