PMID- 28276550
OWN - NLM
STAT- MEDLINE
DCOM- 20170530
LR  - 20181202
IS  - 2050-7895 (Electronic)
IS  - 2050-7887 (Linking)
VI  - 19
IP  - 4
DP  - 2017 Apr 19
TI  - Particle size specific distribution of perfluoro alkyl substances in atmospheric 
      particulate matter in Asian cities.
PG  - 549-560
LID - 10.1039/c6em00564k [doi]
AB  - Seasonal and local characteristics of perfluorinated alkylated substances (PFASs) 
      were examined using size-segregated particles including an ultrafine range. The 
      examination included sampling and analysis of ambient particles collected at four 
      sites located in different environments in three different countries, Japan 
      (Kanazawa and Okinawa), Hong Kong and India. To minimize the evaporation 
      artefacts derived from PFASs during the sampling, an air sampler that permitted 
      particles smaller than 0.1 mum (PM(0.1)) to be separated at a moderate pressure 
      drop (<5-15 kPa), was used for all of the air sampling procedures. In the case of 
      Kanazawa, a local city in Japan, the concentration of PFASs was found to be 
      dominated by carboxylates, especially PFOA, PFNA and PFDA regardless of the 
      particle size and sampling period. Ultrafine particles were found to be the 
      largest contributor to the mass fraction of PFCAs, while the maximum PFOS mass 
      fractions were determined to be in the coarse-sized fractions. The seasonal 
      difference in the total PFAS concentration can be largely attributed to 
      precipitation. The results were basically similar for all sites that were 
      examined. The type of land use may be a more influencing factor on the mass 
      fraction of the PFASs than the country of origin. The dependency of PFAS mass 
      fraction on the specific surface of the particle suggests that ultrafine PFAS 
      particles are segregated, not only by gas deposition but could also be segregated 
      by a mechanism involving compositional dependence or the primary source of the 
      particles. Other possible sources of PFASs, other than from traffic are also 
      possible.
FAU - Ge, H
AU  - Ge H
AD  - School of Environmental Design, College of Science and Engineering, Kanazawa 
      University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan. 
      mfuruch@staff.kanazawa-u.ac.jp.
FAU - Yamazaki, E
AU  - Yamazaki E
FAU - Yamashita, N
AU  - Yamashita N
FAU - Taniyasu, S
AU  - Taniyasu S
FAU - Ogata, A
AU  - Ogata A
FAU - Furuuchi, M
AU  - Furuuchi M
LA  - eng
PT  - Journal Article
PL  - England
TA  - Environ Sci Process Impacts
JT  - Environmental science. Processes & impacts
JID - 101601576
RN  - 0 (Air Pollutants)
RN  - 0 (Hydrocarbons, Fluorinated)
RN  - 0 (Particulate Matter)
SB  - IM
MH  - Air Pollutants/*analysis
MH  - Atmosphere/*chemistry
MH  - Cities
MH  - Environmental Monitoring
MH  - Hong Kong
MH  - Hydrocarbons, Fluorinated/*analysis
MH  - India
MH  - Japan
MH  - *Particle Size
MH  - Particulate Matter/*analysis
EDAT- 2017/03/10 06:00
MHDA- 2017/05/31 06:00
CRDT- 2017/03/10 06:00
PHST- 2017/03/10 06:00 [pubmed]
PHST- 2017/05/31 06:00 [medline]
PHST- 2017/03/10 06:00 [entrez]
AID - 10.1039/c6em00564k [doi]
PST - ppublish
SO  - Environ Sci Process Impacts. 2017 Apr 19;19(4):549-560. doi: 10.1039/c6em00564k.