PMID- 15991665
OWN - NLM
STAT- MEDLINE
DCOM- 20050729
LR  - 20190911
IS  - 1096-2247 (Print)
IS  - 1096-2247 (Linking)
VI  - 55
IP  - 5
DP  - 2005 May
TI  - The Steubenville Comprehensive Air Monitoring Program (SCAMP): analysis of 
      short-term and episodic variations in PM2.5 concentrations using hourly air 
      monitoring data.
PG  - 559-73
AB  - One-hour average ambient concentrations of particulate matter (PM) with an 
      aerodynamic diameter < 2.5 microm (PM2.5) were determined in Steubenville, OH, 
      between June 2000 and May 2002 with a tapered element oscillating microbalance 
      (TEOM). Hourly average gaseous copollutant [carbon monoxide (CO), sulfur dioxide 
      (SO2), nitrogen oxide (NOx), and ozone (O3)] concentrations and meteorological 
      conditions also were measured. Although 75% of the 14,682 hourly PM2.5 
      concentrations measured during this period were < or = 17 microg/m3, 
      concentrations > 65 microg/m3 were observed 76 times. On average, PM2.5 
      concentrations at Steubenville exhibited a diurnal pattern of higher early 
      morning concentrations and lower afternoon concentrations, similar to the diurnal 
      profiles of CO and NO(x). This pattern was highly variable; however, PM2.5 
      concentrations > 65 microg/m3 were never observed during the mid-afternoon 
      between 1:00 p.m. and 5:00 p.m. EST. Twenty-two episodes centered on one or more 
      of these elevated concentrations were identified. Five episodes occurred during 
      the months June through August; the maximum PM2.5 concentration during these 
      episodes was 76.6 microg/m3. Episodes occurring during climatologically cooler 
      months often featured higher peak concentrations (five had maximum concentrations 
      between 95.0 and 139.6 microg/m3), and many exhibited strong covariation between 
      PM2.5 and CO, NO(x), or SO2. Case studies suggested that nocturnal surface-based 
      temperature inversions were influential in driving high nighttime concentrations 
      of these species during several cool season episodes, which typically had 
      dramatically lower afternoon concentrations. These findings provide insights that 
      may be useful in the development of PM2.5 reduction strategies for Steubenville, 
      and suggest that studies assessing possible health effects of PM2.5 should 
      carefully consider exposure issues related to the intraday timing of PM2.5 
      episodes, as well as the potential for toxicological interactions among PM2.5, 
      and primary gaseous pollutants.
FAU - Connell, Daniel P
AU  - Connell DP
AD  - CONSOL Energy Inc. Research & Development, 4000 Brownsville Road, South Park, PA 
      15129, USA. danielconnell@consolenergy.com
FAU - Withum, Jeffrey A
AU  - Withum JA
FAU - Winter, Stephen E
AU  - Winter SE
FAU - Statnick, Robert M
AU  - Statnick RM
FAU - Bilonick, Richard A
AU  - Bilonick RA
LA  - eng
PT  - Journal Article
PT  - Research Support, N.I.H., Extramural
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - United States
TA  - J Air Waste Manag Assoc
JT  - Journal of the Air & Waste Management Association (1995)
JID - 9503111
RN  - 0 (Air Pollutants)
SB  - IM
MH  - Air Pollutants/*analysis
MH  - Environmental Monitoring/*methods/*standards
MH  - Ohio
MH  - Particle Size
MH  - Reference Values
MH  - Reproducibility of Results
MH  - Time Factors
EDAT- 2005/07/05 09:00
MHDA- 2005/07/30 09:00
CRDT- 2005/07/05 09:00
PHST- 2005/07/05 09:00 [pubmed]
PHST- 2005/07/30 09:00 [medline]
PHST- 2005/07/05 09:00 [entrez]
AID - 10.1080/10473289.2005.10464646 [doi]
PST - ppublish
SO  - J Air Waste Manag Assoc. 2005 May;55(5):559-73. doi: 
      10.1080/10473289.2005.10464646.