PMID- 19541346
OWN - NLM
STAT- MEDLINE
DCOM- 20091006
LR  - 20090727
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 407
IP  - 18
DP  - 2009 Sep 1
TI  - Comparison of sources of submicron particle number concentrations measured at two 
      sites in Rochester, NY.
PG  - 5071-84
LID - 10.1016/j.scitotenv.2009.05.040 [doi]
AB  - Sources contributing to the submicron particles (100-470 nm) measured between 
      January 2002 and December 2007 at two different New York State Department of 
      Environmental Conservation (NYS DEC) sites in Rochester, NY were identified and 
      apportioned using a bilinear receptor model, positive matrix factorization (PMF). 
      Measurements of aerosol size distributions and number concentrations for 
      particles in the size range of 10-500 nm have been made since December 2001 to 
      date in Rochester. The measurements are being made using a scanning mobility 
      particle sizer (SMPS) consisting of a DMA and a CPC (TSI models 3071 and 3010, 
      respectively). From December 2001 to March 2004, particle measurements were made 
      at the NYS DEC site in downtown Rochester, but it was moved to the eastside of 
      Rochester in May 2004. Each measurement period was divided into three seasons 
      i.e., winter (December, January, and February), summer (June, July, and August), 
      and the transitional periods (March, April, May, September, October, and 
      November) so as to avoid experimental uncertainty resulting from too large 
      season-to-season variability in ambient temperature and solar photon intensity 
      that would lead to unstable/non-stationary size distributions. Therefore, the 
      seasons were analyzed independently for possible sources. Ten sources were 
      identified at both sites and these include traffic, nucleation, 
      residential/commercial heating, industrial emissions, secondary nitrate, ozone- 
      rich secondary aerosol, secondary sulfate, regionally transported aerosol, and a 
      mixed source of nucleation and traffic. These results show that the measured 
      total outdoor particle number concentrations in Rochester generally vary with 
      similar temporal patterns, suggesting that the central monitoring site data can 
      be used to estimate outdoor exposure in other parts of the city.
FAU - Kasumba, John
AU  - Kasumba J
AD  - Center for Air Resources Engineering and Science, Clarkson University, Potsdam, 
      NY 13699-5708, United States.
FAU - Hopke, Philip K
AU  - Hopke PK
FAU - Chalupa, David C
AU  - Chalupa DC
FAU - Utell, Mark J
AU  - Utell MJ
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20090621
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
RN  - 0 (Environmental Pollutants)
SB  - IM
MH  - Environmental Pollutants/*analysis
MH  - New York
MH  - Particle Size
MH  - Probability
EDAT- 2009/06/23 09:00
MHDA- 2009/10/07 06:00
CRDT- 2009/06/23 09:00
PHST- 2008/09/20 00:00 [received]
PHST- 2009/05/19 00:00 [revised]
PHST- 2009/05/20 00:00 [accepted]
PHST- 2009/06/23 09:00 [entrez]
PHST- 2009/06/23 09:00 [pubmed]
PHST- 2009/10/07 06:00 [medline]
AID - S0048-9697(09)00509-9 [pii]
AID - 10.1016/j.scitotenv.2009.05.040 [doi]
PST - ppublish
SO  - Sci Total Environ. 2009 Sep 1;407(18):5071-84. doi: 
      10.1016/j.scitotenv.2009.05.040. Epub 2009 Jun 21.