Comparison of lead and tin concentrations in air at a solder manufacturer from the closed-face 37-mm cassette with and without a custom cellulose-acetate cassette insert

Details

• Personal Author:
  Burns, Dru A. ; Chisholm WP ; Harper M ; Kashon ML ; Lee EG ; Nelson, James H.
• Description:
  A polyvinyl chloride (PVC) cassette insert with PVC filter (ACCU-CAP) in a 37-mm closed -face cassette (CFC) was designed for gravimetric analysis. A customized version of the ACCU-CAP, also to be used in the CFC, was manufactured from an acid-digestible cellulose-acetate cassette insert joined to a mixed cellulose ester (MCE) filter for wet chemical analysis. The aim of this study was to compare metal particle concentrations as sampled by the customized insert (CI) in a CFC sampler with the traditional sampling method using only a MCE filter in the CFC. Thirty-nine personal and 13 area samples were taken using paired filter-based CFC and the CI in CFC samplers at a solder manufacturing plant. The CI was removed from its CFC, digested and analyzed as a whole. The MCE filter from the typical CFC was removed for analysis and then the interior of the cassette was wiped with Ghost Wipe for a separate analysis. The MCE filter only, Ghost Wipe, and CI were separately dissolved in heated nitric acid for ICP-MS analysis. Overall, the geometric mean concentration of the filter-only (FO) samples was considerably lower than that of the CI samples, by 53% for lead and 32% for tin. However, if the FO analysis was added to the corresponding Ghost Wipe analysis, i.e., filter+interior wipe (FW), the geometric mean concentrations of the FW results were similar to those of the CI results (by 113% for lead and 98% for tin). For both lead and tin the comparison of (log-transformed) metal concentrations between the FW and CI results showed no statistically significant difference (p-value=0.3009 for lead and 0.800 for tin), while the comparison between the FO and CI results shows statistically significant differences (all p-values<0.05). In conclusion, incorporating the sampler internal non-filter deposits by wiping or use of an internal filter capsule gave higher results than analyzing only the filter. Close agreement between the two methods of including non-filter deposits is an indication of general equivalency. [Description provided by NIOSH]
• Subjects:
  Aerosols Chemistry Metals Occupational Health Particulate Matter Safety
• Keywords:
  Analytical-processes Author Keywords: Aerosol Sampling CFC Sampler Chemical-analysis Chemical-composition Chemical-properties Exposure-levels Exposure-limits Filters Internal Filter Capsule Metal-compounds Metallic-compounds Particulates Sampling Sampling-equipment Solu-CAP Solu-Sert

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• ISSN:
  1545-9624
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division ; DRDS - Division of Respiratory Disease Studies
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  11
• Issue:
  12
• NIOSHTIC Number:
  nn:20044357
• Citation:
  J Occup Environ Hyg 2014 Dec; 11(12):819-825
• Contact Point Address:
  Eun Gyung Lee, National Institute for Occupational Safety and Health (NIOSH), Health Effects Laboratory Division, Exposure Assessment Branch, 1095 Willowdale Road, Morgantown, WV 26505
• Email:
  dtq5@cdc.gov
• CAS Registry Number:
  Lead (CAS RN 7439-92-1) ; Tin (CAS RN 7440-31-5)
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Manufacturing
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:72077f5fe57aef89e90edcadf558ee10221dd3fd7faf95751ef8c898fc73617d54a49598f23b75e52699f72411ee49588311c25230821dbc4bbf422223fd506f
• Download URL:
  https://stacks.cdc.gov/view/cdc/200073/cdc_200073_DS1.pdf
• File Type:
  [PDF - 200.99 KB ]