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Quantification of Spore-forming Bacteria Carried by Dust ParticlesIn order to establish a biological contamination transport model for 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 cleanroom environments 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.
Document ID
20070016679
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Lin, Ying
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Cholakian, Tanya
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Gao, Wenming
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Osman, Shariff
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Barengoltz, Jack
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 23, 2013
Publication Date
July 16, 2006
Subject Category
Spacecraft Design, Testing And Performance
Meeting Information
Meeting: COSPAR Scientific Assembly
Location: Beijing
Country: China
Start Date: July 16, 2006
End Date: July 23, 2006
Funding Number(s)
CONTRACT_GRANT: NRA-03-OSS-01
Distribution Limits
Public
Copyright
Other
Keywords
particles
spacecraft
spore clustering
spores
contamination
bio-contamination

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