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Please use this identifier to cite or link to this item: http://hdl.handle.net/2014/39937

Title: Quantification of spore-forming bacteria carried by dust particles
Authors: Lin, Ying
Cholakian, Tanya
Gao, Wenming
Osman, Shariff
Barengoltz, Jack
Keywords: spores
particles
contamination
spacecraft
spore clustering
bio-contamination
Issue Date: 16-Jul-2006
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006.
Citation: 36th COSPAR Scientific Assembly, Beijing, China July 16-23, 2006.
Abstract: In order to establish a biological contamination transport modelfor predicting the cross contamination risk during spacecraft assembly and upon landing on Mars, it is important to understand the relationship between spore-forming bacteria and their carrier particles. We conducted air and surface sampling in indoor, outdoor, and cleanroomenvironments to determine the ratio of spore forming bacteria to their dust particle carriers of different sizes. The number of spore forming bacteria was determined from various size groups of particles in a given environment. Our data also confirms the existence of multiple spores on a single particle and spore clumps. This study will help in developing a better bio-contamination transport model, which in turn will help in determining forward contamination risks for future missions.
URI: http://hdl.handle.net/2014/39937
Appears in Collections:JPL TRS 1992+

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