PMID- 20704279
OWN - NLM
STAT- MEDLINE
DCOM- 20101220
LR  - 20181201
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 44
IP  - 17
DP  - 2010 Sep 1
TI  - Using a modified electrical aerosol detector to predict nanoparticle exposures to 
      different regions of the respiratory tract for workers in a carbon black 
      manufacturing industry.
PG  - 6767-74
LID - 10.1021/es1010175 [doi]
AB  - The present study was set out to characterize nanoparticle exposures in three 
      selected workplaces of the packaging, warehouse, and pelletizing in a carbon 
      black manufacturing plant using a newly developed modified electrical aerosol 
      detector (MEAD). For confirmation purposes, the MEAD results were compared with 
      those simultaneously obtained from a nanoparticle surface area monitor (NSAM) and 
      a scanning mobility particle sizer (SMPS). We found that workplace background 
      nanoparticle concentrations were mainly coming from the outdoor environment. Size 
      distributions of nanoparticles for the three selected process areas during the 
      work hours were consistently in the form of bimodel. Unlike nanoparticles of the 
      second mode (simply contributed by the process emissions), particles of the first 
      mode could be also contributed by the forklift exhaust or fugitive emissions of 
      heaters. The percents of nanoparticles deposited on the alveolar (A) region were 
      much higher than the other two regions of the head airway (H), tracheobronchial 
      (TB) for all selected workplaces in both number and surface area concentrations. 
      However, significant differences were found in percents of nanoparticles 
      deposited on each of the three regions while different exposure metrics were 
      adopted. Both NSAM and MEAD obtained quite comparable results. No significant 
      difference can be found between the results obtained from SMPS and MEAD after 
      being normalized. Considering the MEAD is less expensive, less bulky, and easy to 
      use, our results further support the suitability of using MEAD in the field for 
      nanoparticle exposure assessments.
FAU - Wang, Ying-Fang
AU  - Wang YF
AD  - Department of Environmental and Occupational Health, Medical College, National 
      Cheng Kung University, 138 Sheng-Li Road, Tainan 70428, Taiwan.
FAU - Tsai, Perng-Jy
AU  - Tsai PJ
FAU - Chen, Chun-Wan
AU  - Chen CW
FAU - Chen, Da-Ren
AU  - Chen DR
FAU - Hsu, Der-Jen
AU  - Hsu DJ
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Aerosols)
RN  - 0 (Air Pollutants, Occupational)
RN  - 0 (Soot)
SB  - IM
MH  - Aerosols/analysis
MH  - Air Pollutants, Occupational/analysis
MH  - *Electrical Equipment and Supplies
MH  - Environmental Monitoring/*instrumentation
MH  - Humans
MH  - *Industry
MH  - Inhalation Exposure/*analysis
MH  - Nanoparticles/*analysis
MH  - Particle Size
MH  - Reproducibility of Results
MH  - Respiratory System/*anatomy & histology
MH  - Soot/administration & dosage/*adverse effects
MH  - Surface Properties
MH  - Workforce
MH  - Workplace
EDAT- 2010/08/14 06:00
MHDA- 2010/12/21 06:00
CRDT- 2010/08/14 06:00
PHST- 2010/08/14 06:00 [entrez]
PHST- 2010/08/14 06:00 [pubmed]
PHST- 2010/12/21 06:00 [medline]
AID - 10.1021/es1010175 [doi]
PST - ppublish
SO  - Environ Sci Technol. 2010 Sep 1;44(17):6767-74. doi: 10.1021/es1010175.