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Applied and Environmental Microbiology, May 2003, p. 3002-3004, Vol. 69, No. 5
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.5.3002-3004.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Endotoxin Inactivation in Water by Using Medium-Pressure UV Lamps

W. B. Anderson,1* P. M. Huck,1 D. G. Dixon,2 and C. I. Mayfield2

Department of Civil Engineering,1 Department of Biology, University of Waterloo, Waterloo, Ontario, Canada N2L 3G12

Received 7 March 2002/ Accepted 30 January 2003

Deionized water was spiked with various concentrations of endotoxin and exposed to UV irradiation from medium-pressure UV lamps to assess endotoxin inactivation. It was found that endotoxin inactivation was proportional to the UV dose under the conditions examined. The inactivation rate was determined to be ~0.55 endotoxin unit/ml per mJ/cm2 of irradiation delivered.

* Corresponding author. Mailing address: Department of Civil Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1. Phone: (519) 888-4567, ext. 3265. Fax: (519) 746-7499. E-mail: wbanderson{at}uwaterloo.ca.

Applied and Environmental Microbiology, May 2003, p. 3002-3004, Vol. 69, No. 5
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.5.3002-3004.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



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