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Near real time monitoring of diesel particulate matter in underground mines.

Authors
Janisko-S; Noll-JD
Source
Proceedings of the 12th U.S./North American Mine Ventilation Symposium, Reno, Nevada, June 9-11, 2008. Wallace KG Jr., ed., Reno, NV: University of Nevada - Reno, 2008 Jun; :509-513
NIOSHTIC No.
20034170
Abstract
Studies have linked long-term inhalation of diesel exhaust with adverse health effects such as cardiovascular disease, cardiopulmonary disease, and lung cancer. Diesel exhaust levels in underground mines can approach 100 times the environmental level and are therefore monitored closely in the mining industry. Elemental carbon (EC) (a product of diesel combustion commonly referred to as "soot" has proven to be a good indicator of diesel exhaust levels. The current procedure for measuring EC levels involves taking personal samples from a mine worker's breathing zone and/or stationary samples in various parts of the mine and subsequently sending these samples to a lab for analysis by NIOSH 5040 method. Unfortunately, the whole process can take up to several weeks to complete. To address the problem of waiting weeks for results, NIOSH's Pittsburgh Research Laboratory is developing a portable device for measuring levels of elemental carbon. This optical device takes a continuous sample of air in the surrounding environment and measures the absorbance of light passing through a filter that collects diesel exhaust particulates within the instrument. This technology can provide a near real time measurement of EC with accuracy within 10% error. The ability to take near real time measurements, combined with the instrument's portability (currently small enough to be worn on a miner's belt), makes this device extremely useful in the mining industry. PowerPoint and MP3 files are available.
Keywords
Mining-industry; Underground-mining; Ventilation-systems; Air-quality-monitoring; Particulate-dust; Dust-particles; Dust-measurement; Aerosol-particles; Airborne-particles; Diesel-emissions; Exposure-limits; Dust-counters
CAS No.
7440-44-0
Publication Date
20080609
Document Type
Conference/Symposia Proceedings
Editors
Wallace-KG Jr.
Fiscal Year
2008
NTIS Accession No.
NTIS Price
ISBN No.
9780615200095
NIOSH Division
PRL
Priority Area
Mining
Source Name
Proceedings of the 12th U.S./North American Mine Ventilation Symposium, Reno, Nevada, June 9-11, 2008
State
PA; NV
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