Development of FACTS Procedures for Combined Chlorine and Ozone in Aqueous Solutions.
Final rept. Jun-Dec 77,
AMERICAN UNIV WASHINGTON D C DEPT OF CHEMISTRY
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Most colorimetric procedures for chlorine analysis in treated water and wastewater suffer from the fact that they are not specific for free available chlorine. However, the FACTS Free Available Chlorine Test with Syringaldazine procedure is specific for free available chlorine in the presence of the common interferences found in water. This study describes the research leading to the modification of FACTS to give a procedure for total available chlorine and combined available chlorine. The modified FACTS procedure obeys Beers Law through the range of 0-10 mg1 total available chlorine as Cl2 with a lower limit of 0.2 mg1 as Cl2. Ozonation is being explored as an alternative method for disinfection. Therefore, the FATCS procedure has also been modified to determine residual ozone in aqueous solutions obeying Beers Law through the range of 0-6 mg1 ozone with a lower limit of 0.2 mg1 ozone. Author
- Inorganic Chemistry