Field study of high flow rate respirable size selective samplers for silica measurement

Details

• Personal Author:
  Harper M ; Kashon M ; Lee T ; Harper M ; Kashon M ; Lee T
• Description:
  Objective: To determine the feasibility of utilizing the high flow rate samplers (CIP10-R, FSP10 and GK2.69) in measurements of respirable crystalline silica collected from various occupational environments by comparison with low flow rate samplers (10- mm nylon cyclone and Higgins-Dewell type cyclone). Methods: Samples were collected in seven occupational sites in the US, including construction (masonry and demolition), silica sand production, metal mine and labor union training centers, and five stonemasonry sites in Ireland. Side-by-side personal sampling was conducted with 6 combinations of high and low flow rate samplers. When personal sampling was unavailable, a stationary Lippman-type sampling apparatus was utilized and placed near the working area. Gravimetric analysis was used to determine respirable dust mass concentration and X-ray diffraction analysis was used to determine quartz mass concentration. Results: Eleven sets of area samples and 268 pairs of personal samples were obtained. Due to large variation in field condition, the respirable dust mass and quartz mass concentrations ratios <0.3 and >3.0 between the high and low flow rate samplers were considered as outliers. The frequency of samples above the limit of detection of quartz (5ug) was significantly (p<0.05) higher when the CIP10-R and FSP10 samplers were used compared to low flow rate samplers while the GK2.69 cyclone did not show significant difference from low flow rate samplers. The same result was produced in the frequency of above limit of quantification (15 ug) between high and low flow rates samplers. Some pairs of the samplers showed significant differences (p<0.05) in respirable dust mass concentration and quartz mass concentration but these differences disappeared when outliers were removed. Some pairs of the samplers showed a significant difference from a 1:1 relationship in accordance with linear regression analysis when outliers were removed. However, while the differences were significant, they are not large. Conclusions: The high flow rate samplers did not generally show significant differences in respirable dust mass and quartz mass concentration. The high flow rate samplers also provide more dust for subsequent sample analysis, allowing for better precision. However, higher flow-rate samplers may have other attributes that could influence the decision as to whether they should be used for personal sampling. [Description provided by NIOSH]
• Subjects:
  Aluminum Silicates Construction Industry Dust Irritants Metals Mining Occupational Health Quartz Respiratory System Safety Silicon Compounds Silicon Dioxide

  More +
• Keywords:
  Construction Construction-industry Dust-particles Dust-samplers Gravimetric-analysis Metal-compounds Metal-mining Metallic-compounds Quartz-dust Respiration Respiratory-irritants Samplers Silica-dusts Silicates Silicon-compounds Silicosis Stone-processing Stone-products

  More +
• Publisher:
  American Industrial Hygiene Association
• Document Type:
  Text
• Genre:
  Abstract or Summary ; Abstract or Summary
• Place as Subject:
  OSHA Region 3 ; OSHA Region 8 ; Utah ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH) ; National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division ; HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health ; Workplace Safety & Health
• Location:
  North America ; North America
• Pages in Document:
  75
• NIOSHTIC Number:
  nn:20046281
• Citation:
  AIHce 2015: American Industrial Hygiene Conference and Exposition, May 30 - June 4, 2015, Salt Lake City, Utah. Falls Church, VA: American Industrial Hygiene Association, 2015 May; :75
• CAS Registry Number:
  Quartz (SiO2) (CAS RN 14808-60-7) ; Silica (CAS RN 7631-86-9) ; Quartz (SiO2) (CAS RN 14808-60-7) ; Silica (CAS RN 7631-86-9)
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Construction ; Mining ; Construction ; Mining
• Peer Reviewed:
  False
• Source Full Name:
  AIHce 2015: American Industrial Hygiene Conference and Exposition, May 30 - June 4, 2015, Salt Lake City, Utah
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:890ccabd5a4d28d84d0a778660d200094537f9cbe6f2e40d4b9fe04faa16e6204aa4385d65c6a59c56298472e9570fd50bd67fdb1881c2103131a8b28277c811
• Download URL:
  https://stacks.cdc.gov/view/cdc/201385/cdc_201385_DS1.pdf
• File Type:
  [PDF - 684.01 KB ]