Chlorine dioxide inactivation of bacterial threat agents.
Lett Appl Microbiol
; 53(2): 225-30, 2011 Aug.
Article
em En
| MEDLINE
| ID: mdl-21623848
ABSTRACT
AIMS:
To evaluate the efficacy of chlorine dioxide (ClO(2)) against seven species of bacterial threat (BT) agents in water. METHODS ANDRESULTS:
Two strains of Bacillus anthracis spores, Yersinia pestis, Francisella tularensis, Burkholderia pseudomallei, Burkholderia mallei and Brucella species were each inoculated into a ClO(2) solution with an initial concentration of 2.0 (spores only) and 0.25 mg l(-1) (all other bacteria) at pH 7 or 8, 5 or 25°C. At 0.25 mg l(-1) in potable water, six species were inactivated by at least three orders of magnitude within 10 min. Bacillus anthracis spores required up to 7 h at 5°C for the same inactivation with 2.0 mg l(-1) ClO(2).CONCLUSIONS:
Typical ClO(2) doses used in water treatment facilities would be effective against all bacteria tested except B. anthracis spores that would require up to 7 h with the largest allowable dose of 2 mg l(-1) ClO(2). Other water treatment processes may be required in addition to ClO(2) disinfection for effective spore removal or inactivation. SIGNIFICANCE AND IMPACT OF STUDY The data obtained from this study provide valuable information for water treatment facilities and public health officials in the event that a potable water supply is contaminated with these BT agents.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Óxidos
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Esporos Bacterianos
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Bactérias
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Microbiologia da Água
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Desinfecção
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Compostos Clorados
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Desinfetantes
Idioma:
En
Revista:
Lett Appl Microbiol
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Estados Unidos