Molar absorption coefficient of ozone in aqueous solutions

被引:21
|
作者
Levanov, A. V. [1 ]
Isaikina, O. Ya. [2 ]
Tyutyunnik, A. N. [1 ]
Antipenko, E. E. [1 ]
Lunin, V. V. [1 ,2 ]
机构
[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
[2] Russian Acad Sci, Topchiev Inst Petrochem Synth, Leninskii Pr 29, Moscow 119991, Russia
关键词
spectrophotometry; iodometry; ozone; quantitative determination; molar absorption coefficient; INDIGO METHOD; DECOMPOSITION; TRANSFORMATION; ULTRAVIOLET; WATER;
D O I
10.1134/S1061934816060083
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The value of the molar absorption coefficient of ozone in aqueous solutions (2992 +/- 71 M-1 cm(-1) at 260 nm) is found based on the determination of ozone concentration by iodometry. This value is confirmed by the results of determination of O-3 concentration by reaction with the bromide ion and virtually coincides with the maximum absorption coefficient of ozone in the gas phase in the region the Hartley band. In the determinations of ozone concentration in aqueous solutions by direct spectrophotometry, we recommend the value of the molar absorption coefficient epsilon(D-3)(260) = 3000 M-1 cm(-1).
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页码:549 / 553
页数:5
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