Residual ozone was measured by the indigo method after ozone
treatment on distilled water for 1 min at each temperature (25, 45, 50
and 55 °C). As shown inTable 2, in all ozone treated samples, the concentrations of residual ozone were in the range from 0.08 to 0.31 mg/l
when treated at 25, 45, 50 and 55 °C. Also, the concentration of ozone
decreased as the treatment temperature increased.
Residual ozone was measured by the indigo method after ozone
treatment on distilled water for 1 min at each temperature (25, 45, 50
and 55 °C). As shown inTable 2, in all ozone treated samples, the concentrations of residual ozone were in the range from 0.08 to 0.31 mg/l
when treated at 25, 45, 50 and 55 °C. Also, the concentration of ozone
decreased as the treatment temperature increased.
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