Determination of Ct values for chlorine of resistant enteroviruses

Shamarie Black; Jeanette A. Thurston; Charles P. Gerba

doi:10.1080/10934520802659653

Determination of Ct values for chlorine of resistant enteroviruses

Shamarie Black, Jeanette A. Thurston, Charles P. Gerba

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

Information on the required chlorine dose or Ct value (concentration of free chlorine multiplied by contact time) is limited to only a few enteroviruses. In this study the Ct values of some of the reported more chlorine resistant enteroviruses were determined. The Efficiency Hom Model was used to predict the times for 2, 3. and 4 -log inactivation of echovirus 1 and 12, coxsackievirus B5 and poliovirus type 1 at pH 7.5 and 9 at 5°C. Coxsackievirus B5 was the most resistant to chlorine with a Ct requirement of 11.5 mg×min/L at pH 7.5 at 5°C compared to polio with a Ct of 5.3 mg×min/L under the same conditions. All the viruses were more resistant than polio 1 at pH 9.0.

Original language	English (US)
Pages (from-to)	336-339
Number of pages	4
Journal	Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume	44
Issue number	4
DOIs	https://doi.org/10.1080/10934520802659653
State	Published - Mar 2009

Keywords

Chlorine
Coxsackievirus
Ct
Disinfection
Drinking water
Echovirus
Poliovirus

ASJC Scopus subject areas

Environmental Engineering

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10.1080/10934520802659653

Cite this

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title = "Determination of Ct values for chlorine of resistant enteroviruses",

abstract = "Information on the required chlorine dose or Ct value (concentration of free chlorine multiplied by contact time) is limited to only a few enteroviruses. In this study the Ct values of some of the reported more chlorine resistant enteroviruses were determined. The Efficiency Hom Model was used to predict the times for 2, 3. and 4 -log inactivation of echovirus 1 and 12, coxsackievirus B5 and poliovirus type 1 at pH 7.5 and 9 at 5°C. Coxsackievirus B5 was the most resistant to chlorine with a Ct requirement of 11.5 mg×min/L at pH 7.5 at 5°C compared to polio with a Ct of 5.3 mg×min/L under the same conditions. All the viruses were more resistant than polio 1 at pH 9.0.",

keywords = "Chlorine, Coxsackievirus, Ct, Disinfection, Drinking water, Echovirus, Poliovirus",

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T1 - Determination of Ct values for chlorine of resistant enteroviruses

AU - Black, Shamarie

AU - Thurston, Jeanette A.

AU - Gerba, Charles P.

PY - 2009/3

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N2 - Information on the required chlorine dose or Ct value (concentration of free chlorine multiplied by contact time) is limited to only a few enteroviruses. In this study the Ct values of some of the reported more chlorine resistant enteroviruses were determined. The Efficiency Hom Model was used to predict the times for 2, 3. and 4 -log inactivation of echovirus 1 and 12, coxsackievirus B5 and poliovirus type 1 at pH 7.5 and 9 at 5°C. Coxsackievirus B5 was the most resistant to chlorine with a Ct requirement of 11.5 mg×min/L at pH 7.5 at 5°C compared to polio with a Ct of 5.3 mg×min/L under the same conditions. All the viruses were more resistant than polio 1 at pH 9.0.

AB - Information on the required chlorine dose or Ct value (concentration of free chlorine multiplied by contact time) is limited to only a few enteroviruses. In this study the Ct values of some of the reported more chlorine resistant enteroviruses were determined. The Efficiency Hom Model was used to predict the times for 2, 3. and 4 -log inactivation of echovirus 1 and 12, coxsackievirus B5 and poliovirus type 1 at pH 7.5 and 9 at 5°C. Coxsackievirus B5 was the most resistant to chlorine with a Ct requirement of 11.5 mg×min/L at pH 7.5 at 5°C compared to polio with a Ct of 5.3 mg×min/L under the same conditions. All the viruses were more resistant than polio 1 at pH 9.0.

KW - Chlorine

KW - Coxsackievirus

KW - Ct

KW - Disinfection

KW - Drinking water

KW - Echovirus

KW - Poliovirus

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Determination of Ct values for chlorine of resistant enteroviruses

Abstract

Keywords

ASJC Scopus subject areas

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