Spectrophotometric determination of ozone in solutions: Molar absorption coefficient in the visible regionстатьяИсследовательская статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 27 сентября 2019 г.
Аннотация:A new approach for the determination of ozone concentration in solutions in organic
liquids based on spectrophotometric absorbance measurements in the visible region was
proposed and substantiated. The molar absorption coefficient of ozone in the absorption
maximum at ~600 nm is 8.0 mol-1 L cm-1 for hydrocarbons (hexane, heptane, isooctane), CHCl3
and CCl4, and 5.3 mol-1 L cm-1 for methanol and 4.5 mol-1 L cm-1 for water (±10%). The
coefficient monotonically decreases with increasing dielectric constant of the liquid. The low
molar absorption coefficient allows the use of spectrophotometric measurements for
determination of high ozone concentrations ranging from approximately 1·10-2 mol L-1 up to 1.0
mol L-1.