Whittaker Powerpoint June 08
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Presentation to Columbia SC IAQA chapter about the uses for laser particle counting devices in assessing indoor air quality.
![Brief History of the Particle Counter ,[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Semelhante a Whittaker Powerpoint June 08
Semelhante a Whittaker Powerpoint June 08 (20)
Whittaker Powerpoint June 08
- 1. Applications of the Opticle Particle Counter in an IAQ Assessment Columbia SC Chapter IAQA Workshop June 26, 2008 Presented by: Craig Whittaker, CIE, Ph.D. Environmental Solutions Group
- 8. Recent Studies on the Health Effects of Fine Airborne Particles European study found that fine particles that are inhaled can affect the blood vessels, leading to an increased risk of heart disease - American Journal of Respiratory and Critical Care Medicine Children with asthma had significantly decreased lung function following exposure to indoor air pollution that included fine airborne particles - National Institute of Allergy and Infectious Diseases
- 10. The three components of a particle counter: 1) airflow system 2) optical system 3) electronics
- 53. Additional Research Areas What role does the environmental condition play? Dampness Barometric Pressure Building Pressurization Temperature
- 55. ISO 14664-1 Cleanroom Standards 293,000 29,300 2,930 293 29 5 µ m 8,320,000 35,200,000 ISO 9 832,000 3,520,000 ISO 8 83,200 352,000 ISO 7 8,320 35,200 102,000 237,000 1,000,000 ISO 6 832 3.520 10,020 23,700 100,000 ISO 5 83 352 1,020 2,370 10,000 ISO 4 8 35 102 237 1,000 ISO 3 4 10 24 100 ISO 2 2 10 ISO 1 1 µ m 0.5 µ m 0.3 µ m 0.2 µ m 0.1 µ m
Notas do Editor
- Penicillium, aspergillus and trichoderma spores fall into the 2.5-micron size
- Living room area of the crawl is the top picture
- Kitchen area of the crawl is the top picture
- Living room area of the crawl is the top picture
- Total counts from 21 projects where particle counts (PC), spore traps (SpT) and airborne cultures (Cult) were collected. The graph on the left indicates the counts for the initial, or pre-remediation assessment. The graph on the right indicates the counts for the post-remediation verification (PRV) assessment.
- Average counts for the 21 projects. This data is more meaningful as it displays numbers that many IAQ professionals will accept as familiar. Particle counts are generally higher than spore counts; particle counts are higher than spore counts in 15 of 21 pre-remediation readings and in 19 of 21 post-remediation readings.
- Raw data from the 21 projects illustrated in the previous two slides. On average, 66% of the particles collected in the 1.0 to 10.0-micron sizes prior to remediation were fungal spores and 43% of particles collected post-remediation were fungal spores.
- These slides are optional (time permitting)
- Chart shows maximum concentration limits for particles equal to and larger than the sizes shown
- Four good written resources for people interested in learning more about the role of particle counters in an IAQ investigation