Determinants of Indoor Carbonaceous Aerosols in Homes in the Northeast United States

Details

• Personal Author:
  Deslauriers JR ; Garshick E ; Grady ST ; Kang C-M ; Koutrakis P ; Redlich CA ; Slade M ; Deslauriers JR ; Garshick E ; Grady ST ; Kang C-M ; Koutrakis P ; Redlich CA ; Slade M
• Description:
  Background: Little is known about sources of residential exposure to carbonaceous aerosols, which include black carbon (BC), the elemental carbon core of combustion particles, and organic compounds from biomass combustion (delta carbon). Objective: Assess the impact of residential characteristics on indoor BC and delta carbon when known sources of combustion (e.g., smoking) are minimized. Methods: Between November 2012-December 2014, 125 subjects (129 homes) in Northeast USA were recruited and completed a residential characteristics questionnaire. Every 3 months, participants received an automated sampler to measure fine particulate matter (PM2.5) in their home during a weeklong period (N = 371 indoor air samples) and were also questioned about indoor exposures. The samples were analyzed using a transmissometer at 880 nm (reflecting BC) and at 370 nm. The difference between the two wavelengths estimates delta carbon. Outdoor BC and delta carbon were measured using a central site aethalometer. Results: Geometric mean indoor concentrations of BC and delta carbon (0.65 µg/m³ and 0.19 µg/m³, respectively), were greater than central site concentrations (0.53 µg/m³ and 0.02 µg/m³, respectively). Multivariable analysis showed that greater indoor concentrations of BC were associated with infrequent candle use, multi-family homes, winter season, lack of air conditioning, and central site BC. For delta carbon, greater indoor concentrations were associated with apartments, spring season, and central site concentrations. Significance: In addition to outdoor central site concentrations, factors related to the type of housing, season, and home exposures are associated with indoor exposure to carbonaceous aerosols. Recognition of these characteristics should enable greater understanding of indoor exposures and their sources. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollution Air Pollution, Indoor Environmental Monitoring Men Occupational Health Particulate Matter Safety Smokers Surveys And Questionnaires Women

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• Keywords:
  Author Keywords: Air Pollution Carbon Combustion Environmental Monitoring Humans IAQ Indoor Air Quality Indoor Environments Organic Compounds Particulates Personal Exposure Questionnaires Samplers Smoking

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• ISSN:
  1559-0631
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article ; Journal Article
• Place as Subject:
  Connecticut ; Florida ; Massachusetts ; OSHA Region 1 ; OSHA Region 4
• 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:
  1-7
• Volume:
  33
• Issue:
  3
• NIOSHTIC Number:
  nn:20064428
• Citation:
  J Expo Sci Environ Epidemiol 2023 May/Jun; 33(3):1-7
• Contact Point Address:
  Jessica R. Deslauriers, Yale Occupational and Environmental Medicine Program, Department of Medicine, Yale University School of Medicine, New Haven, CT
• Email:
  Jessica.deslauriers-snodgrass@va.gov
• CAS Registry Number:
  Carbon (CAS RN 7440-44-0) ; Carbon (CAS RN 7440-44-0)
• Federal Fiscal Year:
  2023
• Performing Organization:
  Yale University School of Medicine
• Peer Reviewed:
  True
• Start Date:
  20010701
• Source Full Name:
  Journal of Exposure Science and Environmental Epidemiology
• End Date:
  20260630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0311e56a0997e723e4cf1ec02095b918fa5140ba3c81fe59596ad1cf5513155711163dbcdea77833080ec6a188299d8467b270a9030055e77044625353d3bb50
• Download URL:
  https://stacks.cdc.gov/view/cdc/222885/cdc_222885_DS1.pdf
• File Type:
  [PDF - 832.77 KB ]