Abstract
Ambient air samples collected from five monitoring sites in Portland, OR during July 1999 to August 2000 were analyzed for 43 hazardous air pollutants (HAP). HAP concentrations were compared to carcinogenic and non-carcinogenic benchmark levels. Carcinogenic benchmark concentrations were set at a risk level of one-in-one-million (1x10(-6)). Hazard ratios of 1.0 were used when comparing HAP concentrations to non-carcinogenic benchmarks. Emission sources (point, area, and mobile) were identified and a cumulative cancer risk and total hazard index were calculated for HAPs exceeding these health benchmark levels. Seventeen HAPs exceeded a cancer risk level of 1x10(-6) at all five monitoring sites. Nineteen HAPs exceeded this level at one or more site. Carbon tetrachloride, 1,3-butadiene, formaldehyde, and 1,1,2,2-tetrachloroethane contributed more than 50% to the upper-bound lifetime cumulative cancer risk of 2.47x10(-4). Acrolein was the only non-carcinogenic HAP with hazard ratios that exceeded 1.0 at all five sites. Mobile sources contributed the greatest percentage (68%) of HAP emissions. Additional monitoring and health assessments for HAPs in Portland, OR are warranted, including addressing issues that may have overestimated ...Continue Reading
References
Jan 1, 1992·British Journal of Industrial Medicine·H A RoelsR R Lauwerys
Mar 1, 1987·American Journal of Public Health·I M Ritchie, R G Lehnen
Jun 1, 1973·Annals of Internal Medicine·L H McConnellM G Schmidt
Feb 1, 1997·American Journal of Industrial Medicine·T F Mancuso
May 7, 1998·Toxicology and Industrial Health·J C CaldwellD A Axelrad
Jan 5, 2000·Journal of the Air & Waste Management Association·A S RosenbaumJ P Cohen
Mar 7, 2000·Environmental Research·T J WoodruffD A Axelrad
Jun 22, 2000·Risk Analysis : an Official Publication of the Society for Risk Analysis·R A Morello-FroschJ C Caldwell
Citations
Sep 13, 2012·Environmental Engineering Science·Ki-Hyun KimSoon Hee Lee
Aug 8, 2009·American Journal of Respiratory and Critical Care Medicine·Hitesh S DeshmukhGeorge D Leikauf
Jun 8, 2010·American Journal of Respiratory Cell and Molecular Biology·An Soo JangGeorge D Leikauf
Oct 17, 2007·Environmental Health Perspectives·Ken SextonPhilip J Lupo
May 24, 2007·Environmental Health Perspectives·Michael A Callahan, Ken Sexton
May 24, 2007·Environmental Health Perspectives·Ken Sexton, Dale Hattis
Apr 14, 2007·Environmental Health Perspectives·Tracey J WoodruffDaniel A Axelrad
Apr 4, 2012·International Journal of Environmental Research and Public Health·Ken Sexton
May 1, 2012·The Science of the Total Environment·Maite de BlasJon Iza
Jul 14, 2010·Environment International·Chang-fu WuJohn Williamson
Nov 11, 2008·Environment International·Chang-Fu WuL-J Sally Liu
Apr 26, 2008·Journal of Hazardous Materials·Hang Thi NguyenMin-Young Kim
Feb 19, 2008·Health & Place·Jesse C McEntee, Yelena Ogneva-Himmelberger
Mar 24, 2007·Environment International·Jana KlánováIvan Holoubek
Oct 11, 2012·Environmental Toxicology·Daniel J HochmanEdward G Brooks
Nov 30, 2011·TheScientificWorldJournal·Duy Xuan HoJi-Won Ahn
Mar 15, 2006·Environmental Pollution·Pavel CuprIvan Holoubek
Feb 24, 2015·Environmental Health Insights·Ken Sexton, Stephen H Linder
Jul 10, 2018·Journal of the Air & Waste Management Association·Shen Tian, Melissa Bilec
Aug 3, 2018·Lab on a Chip·Hong-Beom KwonYong-Jun Kim
Aug 26, 2009·Lab on a Chip·Yong-Ho KimYong-Jun Kim
Jun 6, 2013·Environmental Science. Processes & Impacts·Neslihan AkdenizBrian P Hetchler
Apr 3, 2019·Annual Review of Public Health·Diane A Garcia-GonzalesMichael Jerrett
May 18, 2020·Environmental Science and Pollution Research International·Min-Ji KimSung-Ok Baek
Feb 12, 2019·Environmental Epidemiology·Mary Willis, Perry Hystad
Jul 9, 2008·Environmental Science & Technology·Stephen H LinderKen Sexton