A comparison of PAMS and air toxics measurements |
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| Institution: | 1. Environment Research Institute, Shandong University, Jinan 250100, PR China;2. School of Mathematics, Shandong University, Jinan 250100, PR China;1. Univ Paris Descartes, Sorbonne Paris Cité, Laboratoire Santé Publique et Environnement, EA 4064, F-75270 Paris, France;2. Mairie de Paris, Direction de l''Action Sociale de l''Enfance et de la Santé, Cellule Cohorte, F-75012 Paris, France;1. Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, 7650 Remsen, Hanover, NH 03755, USA;2. Section of Biostatistics and Epidemiology, Department of Community and Family Medicine, Geisel School of Medicine at Dartmouth and Norris Cotton Cancer Center, 1 Medical Center Drive, 7927 Rubin Building, Lebanon, NH 03756, USA;3. The Brown Center for the Study of Children at Risk, Warren Alpert Medical School of Brown University, Women and Infants Hospital of Rhode Island, Providence, RI 02903, USA;1. School of Energy and Environment, City University of Hong Kong, Hong Kong;2. The Jockey Club, School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong;1. Université Pierre et Marie Curie, Paris 6, Sorbonne Universités, UMR-S 707: EPAR (Epidémiologie des maladies allergiques et respiratoires), Medical School Saint-Antoine, Paris, France;2. INSERM, U 707: EPAR, Paris, France;3. Service de Pneumologie-allergologie, Hôpital Nord, Marseille, France;4. Service de Pneumologie, Hôpital Gabriel Montpied, Clermont-Ferrand, France;5. Service de Pneumologie, Hôpital Civils, Strasbourg, France;6. Service des Maladies Respiratoires, Hôpital du Haut-Lévèque, Bordeaux, France;7. ISPED, Université Bordeaux Segalen, Bordeaux, France;8. Service de Pneumologie, Hôpital Maison Blanche, Reims, France |
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| Abstract: | One of the requirements of the 1990 Clean Air Act Amendments (CAA) is that 1-h ozone nonattainment areas that are classified severe or higher category are required to operate a network of photochemical assessment monitors (PAMS) to provide hourly measurements of volatile organic compounds (VOCs) comprising of Carbon number <12 (C2–C12), along with carbonyl measurements at 3-h intervals during the summer ozone season. Often collocated with PAMS are 24-h-integrated canister and cartridge-based measurements of selected air toxic compounds, thereby providing an opportunity for inter-comparison and validation of both sets of data. In this study, we report such a comparison and estimates of trend for benzene, m-, p- and o-xylene, toluene, ethylbenzene, 1,2,4-trimethylbenzene, formaldehyde and acetaldehyde at Bronx, NY. The analysis shows that hourly PAMS and 24-h-integrated air toxics are in good agreement with each other exhibiting similar trends and that the PAMS with the higher temporal resolution offers information on excursions of the toxic compounds that would be quite useful in assessment of acute health effects. These findings were also found to be applicable to other locations such as South De Kalb, GA; Gary, IN and Lynn, MA. |
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