Development of the Chemical Exposure Monitor with Indoor Positioning (CEMWIP) for Workplace VOC Surveys

Details

• Alternative Title:
  J Occup Environ Hyg
• Personal Author:
  Brown, KK ; Shaw, PB ; Mead, KR ; Kovein, RJ ; Voorhees, RT ; Brandes, AR
• Description:
  The purpose of this article was to research and develop a direct-reading exposure assessment method that combined a real-time location system with a wireless direct-reading personal chemical sensor. The personal chemical sensor was a photoionization device for detecting volatile organic compounds. The combined system was calibrated and tested against the same four standard gas concentrations and calibrated at one standard location and tested at four locations that included the standard locations. Data were wirelessly collected from the chemical sensor every 1.4 sec, for volatile organic compounds concentration, location, temperature, humidity, and time. Regression analysis of the photo-ionization device voltage response against calibration gases showed the chemical sensor had a limit of detection of 0.2 ppm. The real-time location system was accurate to 13 cm ± 6 cm (standard deviation) in an open area and to 57 cm ± 31 cm in a closed room where the radio frequency has to penetrate drywall-finished walls. The streaming data were collected and graphically displayed as a three-dimensional hazard map for assessment of peak exposure with location. A real-time personal exposure assessment device with indoor positioning was practical and provided new knowledge on direct reading exposure assessment methods.
• Subjects:
  Air Pollutants, Occupational Air Pollution, Indoor Environmental Monitoring Occupational Exposure Surveys And Questionnaires United States Volatile Organic Compounds
• Keywords:
  3-D Hazard Map Direct-reading Method (DRM) Exposure Assessment Photo-ionization Detector (PID) Real-time Location System (RTLS) Volatile Organic Compounds (VOCs)
• Source:
  J Occup Environ Hyg. 13(6):401-412
• Pubmed ID:
  26786234
• Pubmed Central ID:
  PMC5068360
• Document Type:
  Journal Article
• Funding:
  CC999999/Intramural CDC HHSUnited States/
• Volume:
  13
• Issue:
  6
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:e63758a4f697af3554aab0bf2ed30dd8d2c7bc1a5c3d3d5789812adfd4eca8e4
• Download URL:
  https://stacks.cdc.gov/view/cdc/42202/cdc_42202_DS1.pdf
• File Type:
  [PDF - 1.83 MB ]