Optimized Portable Cordless Vacuum Method for Sampling Dry, Hard Surfaces for Dusts

Details

• Personal Author:
  Froines J ; Kim SY ; Que Hee S
• Description:
  Surface sampling in industrial/environmental hygiene is a growing field that needs validated standardized methods. There are few standard methods, one being the American Society for Testing and Materials (ASTM) method involving a portable, cordless air sampling pump. In the present work, the ASTM technique was modified to increase efficiency and versatility. A soil sample was first dried and sieved. Known weights of different sieved sizes (125um-180um, 90um-125um, and 63um-90um) were then sampled at an average flow rate of 4.0 +/- 0.2 L/min from a template of inner dimensions 10 cm by 10 cm on two different surfaces (rough and smooth). Five consecutive sampling passes were performed. For the smooth surface, the first pass efficiency for the largest particles were 45% +/- 45% (CV = 100%), and 75% +/- 20% (CV = 27%) for the smallest particles. After three passes, the efficiency independent of particle size exceeded 83 percent with a CV better than 11 percent. After five passes, the efficiency exceeded at least 85 percent with about the same precision as for three passes. The rough surface allowed higher efficiencies for the first two sampling passes. Three to five passes are recommended to achieve acceptable efficiencies for the surface loose dust/soil range 100 ug/cm2 to 1,500 ug/cm2. [Description provided by NIOSH]
• Subjects:
  Dust Lead Occupational Health Safety
• Keywords:
  Author Keywords: Lead Dust Metals Dust Organics Dusts Dust Samplers Dust Sampling Lead Dust Sampling Equipment Sampling Methods Surface Sampling Surface Soil

  More +
• ISSN:
  1047-322X
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  15
• Issue:
  6
• NIOSHTIC Number:
  nn:20057896
• Citation:
  Appl Occup Environ Hyg 2000 Jun; 15(6):503-511
• CAS Registry Number:
  Lead (CAS RN 7439-92-1)
• Federal Fiscal Year:
  2000
• NORA Priority Area:
  Work Environment and Workforce: Mixed Exposures
• Performing Organization:
  University of California, Los Angeles, California
• Peer Reviewed:
  True
• Start Date:
  19950930
• Source Full Name:
  Applied Occupational and Environmental Hygiene
• End Date:
  19990929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:3b0dbce2ed5b0677deb0abf408ee47c98b6546e583a789ed3aa69a5c628c6722a7716446f101d2a588cd837f841701f00f33144596cb45bbec29d24a357608c1
• Download URL:
  https://stacks.cdc.gov/view/cdc/215101/cdc_215101_DS1.pdf
• File Type:
  [PDF - 362.94 KB ]