A5014024125- Advanced Chemical Sensor Technologies
- Air Quality and Health Impacts
- Water Quality Monitoring and Analysis
- Spectroscopy and Chemometric Analyses
- Electrical and Bioimpedance Tomography
- Air Quality Monitoring and Forecasting
- Occupational and environmental lung diseases
- Atmospheric chemistry and aerosols
- Analytical chemistry methods development
- Aerosol Filtration and Electrostatic Precipitation
- IoT and GPS-based Vehicle Safety Systems
- Radioactivity and Radon Measurements
- Mineral Processing and Grinding
- Laser-induced spectroscopy and plasma
- Fire Detection and Safety Systems
- Occupational Health and Safety Research
- Occupational exposure and asthma
- IoT-based Smart Home Systems
National Institute for Occupational Safety and Health
2019-2024
Inland Northwest Health Services
2019
A method for the quantification of airborne organic carbon (OC) and elemental (EC) within aerosolized diesel particulate matter (DPM) is described in this article. DPM a known carcinogen encountered many industrial workplaces (notably mining) ambient atmosphere. The here collects particles onto quartz fiber filter, after which reflection-mode infrared spectra are measured on mid-infrared Fourier transform (FT-IR) spectrometer. Several absorption bands investigated their efficacy quantifying...
This review considers the use of filters to sample air in mining workplace environments for dust concentration measurement and subsequent analysis hazardous contaminants, especially respirable crystalline silica (RCS) on compatible with wearable personal monitors (PDM). The summarizes filter vendors, sizes, costs, chemical physical properties, information available modeling, laboratory testing, field performance. Filter media testing selection should consider characteristics required mass by...
Direct-on-Filter (DoF) analysis of respirable crystalline silica (RCS) by Fourier Transform Infrared (FTIR) spectroscopy is a useful tool for assessing exposure risks. With the RCS limits becoming lower, it important to characterize and reduce measurement uncertainties. This study systematically evaluated two filter types (i.e., polyvinyl chloride [PVC] polytetrafluoroethylene [PTFE]) measurements DoF FTIR spectroscopy, including filter-to-filter day-to-day variability blank reference...
Diesel particulate matter (DPM) is a common and well-known health hazard in the mining environment. The regulatory method for monitoring both organic elemental carbon (OC, EC) portions of DPM laboratory-based thermal-optical with typical turnaround time one week. In order to evaluate exposure levels take corrective action prior overexposure, portable real-time device capable quantifying OC EC needed. To that end, researchers from National Institute Occupational Safety Health (NIOSH) designed...
Respirable dust mass is a prevalent occupational health hazard to the mining workforce. Mineral matrices observed in mine environment are complex, time varying, and heterogeneous. This poses challenge assessing exposure using Fourier transform infrared (FT-IR) spectrometry as calibrations for constituent species (e.g., crystalline silica) have historically been trained homogeneous standards or simple mixtures therein. Investigations considered direct-on-filter analysis, which collects FT-IR...