Estimation of workroom emissions from electroplating

Details

• Personal Author:
  Conroy LM ; Franke JE ; Scheff PA ; Wadden RA ; Conroy LM ; Franke JE ; Scheff PA ; Wadden RA
• Description:
  Effective control of emissions from electroplating is necessary to maintain a healthy workplace. However, in many cases the emission rates are not well characterized. Based on intensive testing of 8 plating operations during production we have developed a number of methods for estimating emissions of chromium, nickel, copper, and sulfur. For each test area concentrations were determined from particulate samples collected on open face filters using calibrated personnel pumps. The samples were collected hourly at several locations in the vicinity of each source. The tilters were analyzed using PIXE (proton induced xray emission spectroscopy). In each case, measurements of area concentrations were transformed to emission rates by using appropriate mass balance models in conjunction with measured ventilation rates. In addition source activities such as area plated, amp hours consumed, and total power usage were recorded simultaneously with concentration measurements. Comparison of the emission rates with source activities often allowed us to determine emission factors as well as the emission rates. For example, the emission factor for hard and decorative chrome electroplating for three processes varied between 0.08 and 1.47 mg Cr/amp-hr. These results were consistent with limited data available from the California Air Resources Board (0.02 - 3 mg Cr/amp-hr depending on control system). The methods provide a first estimate for determining workroom emissions when no other data are available, and are a useful way to extend field test measurements. For systems with local exhaust ventilation the approach also allows determination of mass-based collection efficiency. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Chemistry Environmental Exposure Occupational Health Particulate Matter Personal Protective Equipment Risk Assessment Risk Factors Safety Ventilation Workplace

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• Keywords:
  Airborne Particles Airborne Particulates Chemical Composition Chemical Properties Emission Sources Exposure Levels Filters Models Particulates Personal Protection Personal Protective Equipment Pumps Risk Factors Sampling Work Environment Workers

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• Publisher:
  American Industrial Hygiene Association
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Abstract or Summary ; Abstract or Summary
• Place as Subject:
  Illinois ; Missouri ; OSHA Region 5 ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH) ; National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health ; Workplace Safety & Health
• Location:
  North America ; North America
• Pages in Document:
  37
• NIOSHTIC Number:
  nn:20048190
• Citation:
  American Industrial Hygiene Conference and Exposition, May 21-27, 1994, Anaheim, California. Fairfax, VA: American Industrial Hygiene Association, 1994 May; :37
• CAS Registry Number:
  Chromium (CAS RN 7440-47-3) ; Copper (CAS RN 7440-50-8) ; Nickel (CAS RN 7440-02-0) ; Sulfur (CAS RN 7704-34-9) ; Chromium (CAS RN 7440-47-3) ; Copper (CAS RN 7440-50-8) ; Nickel (CAS RN 7440-02-0) ; Sulfur (CAS RN 7704-34-9)
• Federal Fiscal Year:
  1994
• Performing Organization:
  University of Illinois at Chicago, Illinois
• Peer Reviewed:
  False
• Start Date:
  19901201
• Source Full Name:
  American Industrial Hygiene Conference and Exposition, May 21-27, 1995, Kansas City, Missouri
• End Date:
  19941130
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:bc1ed902db042a0fb68fb79b4b64009278276851d8ce19ed06d054521dfa491706632077904539aa8d8c6a20417541d8935b4235f80ccb6ef6f9e3caa509ea86
• Download URL:
  https://stacks.cdc.gov/view/cdc/203009/cdc_203009_DS1.pdf
• File Type:
  [PDF - 558.26 KB ]