Measurement of Chlorine Dioxide in Water by DPD Colorimetric Method

An improved colorimetric method for chlorine dioxide and chlorite ion in drinking water using lissamine green B and horseradish peroxidase.

Lissamine Green B (LGB) was carefully selected as a potential candidate for the development of a new U.S. Environmental Protection Agency (EPA) method that is intended for use at water utilities to determine chlorine dioxide (ClO2) in drinking water. Chlorine dioxide reacts with LGB in aqueous solution to decrease the absorbance of LGB in direct proportion to the ClO2 concentration. LGB was con...

Legionella control by chlorine dioxide in hospital water systems

egionnaires’ disease is caused by Legionella bacteria, which colonize 12–70% of hospital water systems (Lin et al, 1998b). Of the Legionnaires’ disease cases reported to the Centers for Disease Control and Prevention (CDC), 25–45% were hospital-acquired (Benin et al, 2002). Legionella and other opportunistic pathogens colonize water systems; cause pneumonia, wound, and bloodstream infections in...

Rapid measurement of soil water by gravimetric method

Biochemical method for chlorine dioxide determination.

Chlorine dioxide is a disinfectant used worldwide. In this article, a new enzymatic method for the determination of chlorine dioxide has been developed. This rapid spectophotometric assay is able to detect from 0.2 to 4 mg/liter of chlorine dioxide. The method is based on the capacity of horseradish peroxidase to decolorize reactive yellow 17 in the presence of chlorine dioxide. The effects of ...

Determination of Chlorine Dioxide and Chlorite in Water

The main task of a drinking water distribution system is to supply each consumer with a sufficient quantity as well as quality of water consistent with the regulations of the Government of the Slovak Republic No. 496/2010 Collection of Laws (including the minimal requirements of European directive 98/83/ES, annex I, parts A, B and the national requirements). The lack of suitable sources of drin...