title: A simple and sensitive fluorescence method for the determination of trace ozone in air using acridine red as a probe.
abstract: 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.
authors.affiliation: Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, College of Environment and Resource, Guangxi Normal University, Guangxi, Guilin, 541004, China.
authors.forename: Qingye
authors.initials: Q
authors.lastname: Liu
authors.forename: Chenyin
authors.initials: C
authors.lastname: Lin
authors.forename: Xinghui
authors.initials: X
authors.lastname: Zhang
authors.forename: Guiqing
authors.initials: G
authors.lastname: Wen
authors.forename: Aihui
authors.initials: A
authors.lastname: Liang
mesh_terms: D000388:Air / Q000032:analysis*; D005456:Fluorescent Dyes / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D057230:Limit of Detection; D010084:Oxidation-Reduction; D010126:Ozone / Q000032:analysis* / Q000737:chemistry; D012235:Rhodamines / Q000737:chemistry*; D012680:Sensitivity and Specificity; D012996:Solutions; D013050:Spectrometry, Fluorescence / Q000379:methods*
chemical_list: D005456:Fluorescent Dyes; D012235:Rhodamines; D012996:Solutions; C032527:acridine red; D010126:Ozone
keywords: acridine red; associated particle; fluorescence method; ozone