Background
The inhalation of airborne respirable crystalline silica (RCS) particulates is a recognized occupational hazard, with potentially severe health consequences including silicosis, lung cancer, chronic obstructive pulmonary disease (COPD), and kidney disease. RCS exposure is particularly prevalent in industries and activities such as construction, mining, demolition, sandblasting, quarrying, ceramics production, foundries, stone cutting and countertop production, refractory brick manufacturing, tombstone creation, oil and gas operations, pottery work, fiberglass and glass manufacturing, and flint knapping. The Occupational Safety and Health Administration (OSHA) has established a permissible exposure limit (PEL) for employees at 50 µg/m3 of respirable crystalline silica, averaged over an 8-hour workday. Compliance with this standard is critical to ensure worker health and safety in these high-risk sectors.
Description
To address the pressing need for real-time silica monitoring, a team of researchers at the University of Nevada, Reno, have developed an innovative technique. They leverage the power of a quantum cascade laser (QCL) in tandem with photoacoustic instrumentation to instantly detect and measure the mass concentration of respirable crystalline silica (RCS) dust. The existing prototype is specifically tailored to monitor levels of silica, coal dust, and kaolinite dust, making it highly relevant for mining settings.
Advantages
Patent & Literature