PMID- 25158477
OWN - NLM
STAT- MEDLINE
DCOM- 20150617
LR  - 20181202
IS  - 0250-3301 (Print)
IS  - 0250-3301 (Linking)
VI  - 35
IP  - 6
DP  - 2014 Jun
TI  - [Study on transition metals in airborne particulate matter in Shanghai city's 
      subway].
PG  - 2052-9
AB  - PM10 and PM2.5 aerosol particle samples were collected at a subway station in 
      Shanghai and their morphology, chemical composition and transition metal species 
      were studied. The mass concentrations of PM10 and PM2.5 inside the subway station 
      were significantly higher than those measured in aboveground ambient air. The PM 
      levels inside subway were much higher than the state control limit. The aerosol 
      composition in the metro station was quite different from that of the aboveground 
      urban particles. Concentrations of Fe, Mn and Cr were higher than the averages of 
      aboveground urban air particles by factors of 8, 2, and 2, respectively, showing 
      a substantial enrichment in subway. Scanning electron microscope (SEM) analysis 
      showed that the subway particles had flat surfaces in combination with parallel 
      scratches and sharp edges and looked like metal sheets or flakes. Furthermore, 
      analysis of the atomic composition of typical subway particles by energy 
      dispersive X-Ray (EDX) spectroscopy showed that oxygen and iron dominated the 
      mass of the particles. The X-ray absorption near-edge structure (XANES) 
      spectroscopy results showed that a fraction (> 26%) of the total iron in the PM10 
      was in the form of pure Fe, while in the street particles Fe(III) was shown to be 
      a significant fraction of the total iron. The work demonstrated that the 
      underground subway stations in Shanghai were an important microenvironment for 
      exposure to transition metal aerosol for the people taking subway train for 
      commuting every day and those who work in the subway stations, and the metal 
      particle exposure for people in the subway station should not be ignored.
FAU - Bao, Liang-Man
AU  - Bao LM
FAU - Lei, Qian-Tao
AU  - Lei QT
FAU - Tan, Ming-Guang
AU  - Tan MG
FAU - Li, Xiao-Lin
AU  - Li XL
FAU - Zhang, Gui-Lin
AU  - Zhang GL
FAU - Liu, Wei
AU  - Liu W
FAU - Li, Yan
AU  - Li Y
LA  - chi
PT  - Journal Article
PL  - China
TA  - Huan Jing Ke Xue
JT  - Huan jing ke xue= Huanjing kexue
JID - 8405344
RN  - 0 (Air Pollutants)
RN  - 0 (Ferric Compounds)
RN  - 0 (Metals)
RN  - 0 (Particulate Matter)
RN  - E1UOL152H7 (Iron)
SB  - IM
MH  - Air Pollutants/*analysis
MH  - China
MH  - Cities
MH  - Ferric Compounds
MH  - Iron/analysis
MH  - Metals/*analysis
MH  - Particulate Matter/*analysis
MH  - *Railroads
MH  - Spectrometry, X-Ray Emission
EDAT- 2014/08/28 06:00
MHDA- 2015/06/18 06:00
CRDT- 2014/08/28 06:00
PHST- 2014/08/28 06:00 [entrez]
PHST- 2014/08/28 06:00 [pubmed]
PHST- 2015/06/18 06:00 [medline]
PST - ppublish
SO  - Huan Jing Ke Xue. 2014 Jun;35(6):2052-9.