The inactivation kinetics of H-1 parvovirus by chlorine

Churn, C. Calvert; Boardman, Gregory D.; Bates, Robert C.

doi:10.1016/0043-1354(84)90069-1

Cited by 11 publications

(1 citation statement)

References 9 publications

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“…It is remarkable that such a slight free-chlorine concentration, i.e., at the detection threshold of the DPD-FAS technique, was enough to inactivate more than 1 log unit of poliovirus 1 in 30 min, even though the virus was a laboratory strain (20,36). Some authors (7,17) have shown that inactivation of enteric viruses by chlorine is not a linear function of the disinfectant dose. For instance, vanden Bossche et al (40) observed a relationship between the poliovirus 1 inactivation rate and the residual ozone dose which followed a logistic model.…”

Section: Discussionmentioning

confidence: 99%

Poliovirus-1 inactivation and interaction with biofilm: a pilot-scale study

Quignon

Sardin

Kiéné

et al. 1997

Appl Environ Microbiol

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A pilot-scale study was initiated to examine the behavior of viruses pulse injected into a distribution system. The influence of a free-chlorine residual and that of virus preadsorption to clay particles was evaluated by tracing the viruses both in the water flow and after elution from the biofilm. These experiments demonstrated, first, that virus preadsorption on 40 mg of Na-montmorillonite per liter increased the residence time of the viruses within the pilot plant by roughly three times and, second, that preadsorption to clay did not prevent viruses from being inactivated by chlorine. Moreover, with no clay added, a greater amount of viruses was recovered from the biofilm than from the water flow (by a factor of 2 or 10 in the absence or presence of chlorine, respectively), indicating a tendency for virus accumulation within biofilms.

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