PMID- 20526047
OWN - NLM
STAT- MEDLINE
DCOM- 20101210
LR  - 20191111
IS  - 1349-533X (Electronic)
IS  - 1341-0725 (Linking)
VI  - 52
IP  - 4
DP  - 2010
TI  - [Airborne particles in a multi-wall carbon nanotube production plant: observation 
      of particle emission and personal exposure 1: Measurement in the packing 
      process].
PG  - 182-8
AB  - OBJECTIVES: In order to assess the exposure risks of multiwall carbon nanotubes 
      (MWCNT) for packing workers, we carried out real-time monitoring in the two types 
      of packing facilities of MWCNT, and exposure measurements for the packing 
      workers. METHODS: In the real-time monitoring, a scanning mobility particle sizer 
      (SMPS) and an optical particle counter (OPC) were used to measure nanoscale 
      particles and sub-micron/micron scale particles, respectively. A personal sampler 
      with PM 4.0 was used to measure the personal exposures in the packing facilities. 
      RESULTS: One of the packing facilities is manually operated and the other is 
      automated. The concentrations of airborne dust in both facilities were almost the 
      same as each other at 0.24 mg/m(3) (total dust). However, the results of personal 
      exposure measurements were quite different between the two facilities. The 
      exposure concentrations of workers in the manually and automated operations were 
      2.39/0.39 (total/respirable) mg/m(3) and 0.29/0.08 (total/respirable) mg/m(3), 
      respectively. From the time series study, submicron scale particles were released 
      into the workplace air when the CNT products were put into temporary container 
      bags from a hopper and manually packed into shipping bags. However, the 
      task-related nanoscale particle release was not observed. CONCLUSIONS: The manual 
      packing operation is one of the "hot spots" in MWCNT production facilities, and 
      automation brings much improvement to reduce MWCNT exposure.
FAU - Takaya, Mitsutoshi
AU  - Takaya M
AD  - Working Environment Research Group, National Institute of Occupational Safety and 
      Health, 6-21-1 Nagao, Tama-ku, Kawasaki 214-8585, Japan.
FAU - Serita, Fumio
AU  - Serita F
FAU - Ono-Ogasawara, Mariko
AU  - Ono-Ogasawara M
FAU - Shinohara, Yasushi
AU  - Shinohara Y
FAU - Saito, Hiroyuki
AU  - Saito H
FAU - Koda, Shigeki
AU  - Koda S
LA  - jpn
PT  - English Abstract
PT  - Journal Article
DEP - 20100603
PL  - Japan
TA  - Sangyo Eiseigaku Zasshi
JT  - Sangyo eiseigaku zasshi = Journal of occupational health
JID - 9507473
RN  - 0 (Air Pollutants, Occupational)
RN  - 0 (Nanotubes, Carbon)
SB  - IM
MH  - Air Pollutants, Occupational/*analysis
MH  - Automation
MH  - Computer Systems
MH  - Environmental Monitoring
MH  - Nanoparticles/*analysis
MH  - Nanotubes, Carbon/*analysis
EDAT- 2010/06/08 06:00
MHDA- 2010/12/14 06:00
CRDT- 2010/06/08 06:00
PHST- 2010/06/08 06:00 [entrez]
PHST- 2010/06/08 06:00 [pubmed]
PHST- 2010/12/14 06:00 [medline]
AID - JST.JSTAGE/sangyoeisei/B9020 [pii]
AID - 10.1539/sangyoeisei.b9020 [doi]
PST - ppublish
SO  - Sangyo Eiseigaku Zasshi. 2010;52(4):182-8. doi: 10.1539/sangyoeisei.b9020. Epub 
      2010 Jun 3.