A Laboratory Exposure System to Study the Effects of Aging on Super-micron Aerosol Particles
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
A laboratory system was constructed that allows the super-micron particles to be aged for long periods of time under conditions that can simulate a range of natural environments and conditions, including relative humidity, oxidizing chemicals, organics and simulated solar radiation. Two proof-of-concept experiments using a non-biological simulant for biological particles and a biological simulant demonstrate the utility of these types of aging experiments. Green Visolite®, which is often used as a tracer material for model validation experiments, does not degrade with exposure to simulated solar radiation, the actual biological material does. This would indicate that Visolite® should be a good tracer compound for mapping the extent of a biological release using fluorescence as an indicator, but that it should not be used to simulate the decay of a biological particle when exposed to sunlight. The decay in the fluorescence measured for B. thurengiensis is similar to what has been previously observed in outdoor environments.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1204086
- Report Number(s):
- SAND--2014-0997; 499212
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fluorescence spectra and biological activity of aerosolized bacillus spores and MS2 bacteriophage exposed to ozone at different relative humidities in a rotating drum
Numerical simulation of solar heat absorption within indoor space by means of composite grid method
Journal Article
·
Wed Oct 14 00:00:00 EDT 2015
· Journal of Quantitative Spectroscopy and Radiative Transfer
·
OSTI ID:1214702
Numerical simulation of solar heat absorption within indoor space by means of composite grid method
Conference
·
Tue Dec 30 23:00:00 EST 1997
·
OSTI ID:345221