Authors: Wagner, Andrew; Hoffman, Melissa; Green, Christopher F.; Barth, Edward; Davidson, Craig; Gibbs, Shawn G.; Scarpino, Pasquale V.

Source: Journal of Environmental Engineering and Science, Volume 5, Number 1, January 2006 , pp. 75-79(5)

Publisher: NRC Research Press

Abstract:

Aerosolized disinfectant use has appealing qualities for inactivation and remediation of biologically contaminated materials. Their ability to reach exterior and interior spaces of walls and difficult to access areas has potential as a simple and cost effective remediation technique. Stachybotrys chartarum was used as a test organism against four disinfectants: chlorine dioxide, sodium hypochlorite, thiabendazole, and cupric sulfate – sodium hydroxide solution. Tests were conducted independently. The organism was exposed for 4 and 8 h periods to the aerosolized disinfectant. The building material was commercially available gypsum board with paper facing. This material was inoculated under sterile conditions. The commercially available treatments were administered as aerosols generated from a collison nebulizer directed into a sterile growth chamber housing inoculated gypsum board. Surface samples were collected before and after exposures to determine treatment effects. The aerosolized chlorine dioxide and sodium hypochlorite treatments successfully inactivated the organism after 8 h of continuous exposure. Key words: Stachybotrys chartarum, aerosolized disinfectant, gypsum board, fungi.

Les désinfectants en aérosol présentent des qualités intéressantes pour l'inactivation et la restauration des matériaux contaminés par des matières biologiques. Leur capacité à atteindre les espaces extérieurs et intérieurs de murs et des zones d'accès difficile montre le potentiel d'une méthode de restauration simple et peu coûteuse. Stachybotrys chartarumi a servi d'organisme d'essai pour quatre désinfectants : le dioxyde de chlore, l'hypochlorite de sodium, le thiabendazole et une solution de sulfate de cuivre/hydroxyde de sodium. Des essais ont été effectués de manière indépendante. L'organisme a été exposé au désinfectant aérosol durant des périodes de quatre et de huit heures. Le matériau de construction était du placoplâtre recouvert de papier offert sur le marché. Ce matériau a été inoculé sous conditions stériles. Les traitements offerts sur le marché ont été administrés sous forme d'aérosol généré par un nébuliseur Collison dirigé dans une chambre de culture stérile contenant du placoplâtre inoculé. Les échantillons de surface ont été collectés avant et après les expositions afin de déterminer les effets du traitement. Les traitements aérosols de dioxyde de chlore et d'hypochlorite de sodium ont réussi à inactiver l'organisme après 8 heures d'exposition continue. Mots clés : Stachybotrys chartarum, désinfectant aérosol, placoplâtre, champignons. [Traduit par la rédaction]

Document Type: Research article

Publication date: 2006-01-01

More about this publication?

• Since January 2002, NRC Research Press has published the Journal of Environmental Engineering and Science. During the seven-year history of the journal, the co-editors, Dr. Donald S. Mavinic and Dr. Daniel W. Smith, built a high-quality journal that was well respected by its community of researchers in Canada and around the world. The last issues of the Journal of Environmental Engineering and Science was published in November 2008 together with a supplement.

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• In this Subject: General & Civil Engineering ,  Hydraulic & Environmental Engineering
• By this author: Wagner, Andrew ;  Hoffman, Melissa ;  Green, Christopher F. ;  Barth, Edward ;  Davidson, Craig ;  Gibbs, Shawn G. ;  Scarpino, Pasquale V.

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