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Your search keyword '"Lioy, Paul J."' showing total 21 results
Start Over Author "Lioy, Paul J." Topic environmental issues
21 results on '"Lioy, Paul J."'

1. Characterization of spatial impact of particles emitted from a cement material production facility on outdoor particle deposition in the surrounding community

Author

Ho Yu, Chang, McCandlish, Elizabeth, Stern, Alan H., and Lioy, Paul J.

Subjects
Air quality -- Research, Cement plants -- By-products -- Environmental aspects, Emissions (Pollution) -- Chemical properties -- Environmental aspects, Particles -- Environmental aspects, Environmental services industry, Environmental issues, Science and technology
Abstract

Doi: 10.1080/10473289.2011.599281 The objective of this study was to estimate the contribution of a facility that processes steel production slag into raw material for cement production to local outdoor particle [...]

Published
2011
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2. Using national and local extant data to characterize environmental exposures in the National Children's Study: Queens County, New York

Author

Lioy, Paul J., Isukapalli, Sastry S., Trasande, Leonardo, Thorpe, Lorna, Dellarco, Michael, Weisel, Clifford, Georgopoulos, Panos G., Yung, Christopher, Brown, Margot, and Landrigan, Philip J.

Subjects
Children -- Health aspects -- Usage -- Research, Biological monitoring -- Usage -- Research -- Health aspects, Environmental issues, Health
Abstract

OBJECTIVE: The National Children's Study is a long-term epidemiologic study of 100,000 children from 105 locations across the United States. It will require information on a large number of environmental [...]

Published
2009
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3. Modeling of personal exposures to ambient Air Toxics in Camden, New Jersey: an evaluation study

Author

Wang, Sheng-Wei, Tang, Xiaogang, Wu, Xiangmei, Lioy, Paul J., and Georgopoulos, Panos G.

Subjects
Camden, New Jersey -- Environmental aspects, Toluene -- Health aspects -- Evaluation, Air quality management -- Evaluation, Occupational health and safety -- Evaluation -- Chemical properties -- Health aspects -- Environmental aspects, Benzene -- Health aspects -- Evaluation, Air pollution -- Chemical properties -- Health aspects -- Environmental aspects, Environmental services industry, Environmental issues, Science and technology
Abstract

ABSTRACT This study presents the Individual Based Exposure Modeling (IBEM) application of MENTOR (Modeling Environment for Total Risk studies) in a hot spot area, where there are concentrated local sources [...]

Published
2009

4. Evaluation and comparison of continuous fine particulate matter monitors for measurement of ambient aerosols

Author

Zhu, Kunning and Lioy, Paul J.

Subjects
Air quality -- Research -- Health aspects -- Methods, Environmental monitoring -- Methods -- Research -- Health aspects, Particles -- Distribution -- Health aspects -- Methods -- Research, Company distribution practices, Environmental services industry, Environmental issues, Science and technology
Abstract

ABSTRACT To provide a scientific basis for the selection and use of continuous monitors for exposure and/or health effects studies, and for compliance and episode measurements at strategic locations in [...]

Published
2007

5. Will the circle be unbroken: a history of the U.S. National Ambient Air Quality Standards

Author

Chow, Judith C., Watson, John G., Feldman, Howard J., Nolen, Janice E., Wallerstein, Barry, Hidy, George M., Lioy, Paul J., McKee, Herbert, Mobley, David, Baugues, Keith, and Bachmann, John D.

Subjects
Lung diseases -- Care and treatment, Global warming -- Political aspects -- Health aspects, Air quality -- Evaluation -- Health aspects -- Political aspects, Children -- Health aspects, Energy management systems -- Standards -- Evaluation, Environmental services industry, Environmental issues, Science and technology, National Research Council -- Political activity -- Political aspects -- Standards -- Evaluation
Abstract

INTRODUCTION Following is the 2007 A & WMA Critical Review (1-3) Discussion: 'Will the Circle Be Unbroken: A History of the U.S. National Ambient Air Quality Standards.' In the review, [...]

Published
2007

6. Improving estimation of indoor exposure to inhalable particles for children in the first year of life

Author

Shalat, Stuart L., Lioy, Paul J., Schmeelck, Kathleen, and Mainelis, Gediminas

Subjects
Asthma in children -- Causes of -- Usage -- Measurement, Hazardous substances -- Measurement -- Usage, Robots -- Control systems, Environmental services industry, Environmental issues, Science and technology
Abstract

ABSTRACT There is growing scientific evidence linking early childhood exposure to environmental agents with asthma and other illnesses that may not appear until later in life. Unfortunately the direct measurement [...]

Published
2007

7. An evaluation of the role of risk-based decision-making in a former manufactured gas plant site remediation

Author

Vyas, Vikram M., Gochfeld, Michael G., Georgopoulos, Panos G., Lioy, Paul J., and Sussman, Nancy R.

Subjects
Gas power plants -- Environmental aspects -- Evaluation, Decision-making -- Evaluation -- Environmental aspects -- Analysis, Environmental remediation -- Analysis -- Environmental aspects, Environmental services industry, Environmental issues, Science and technology, Comprehensive Environmental Response, Compensation, and Liability Act of 1980
Abstract

ABSTRACT Environmental remediation decisions are driven by the need to minimize human health and ecological risks posed by environmental releases. The Risk Assessment Guidance for Superfund Sites enunciates the principles [...]

Published
2006

8. Comparisons of the dust/smoke particulate that settled inside the surrounding buildings and outside on the streets of southern New York City after the collapse of the World Trade Center, September 11, 2001

Author

Yiin, Lih-Ming, Millette, James R., Vette, Alan, Ilacqua, Vito, Quan, Chunli, Gorczynski, John, Kendall, Michaela, Chen, Lung Chi, Weisel, Clifford P., Buckley, Brian, Yang, III, and Lioy, Paul J.

Subjects
World Trade Center and Pentagon Attacks, 2001 -- Environmental aspects -- Research, Dust -- Research -- Environmental aspects, Environmental services industry, Environmental issues, Science and technology, Research, Environmental aspects
Abstract

ABSTRACT The collapse of the World Trade Center (WTC) on September 11, 2001, generated large amounts of dust and smoke that settled in the surrounding indoor and outdoor environments in [...]

Published
2004

9. Identification of sources contributing to Mid-Atlantic regional aerosol. (Technical Paper)

Author

Lee, Jong Hoon, Yoshida, Yasuko, Turpin, Barbara J., Hopke, Philip K., Poirot, Richard L., Lioy, Paul J., and Oxley, James C.

Subjects
Aerosols -- Environmental aspects -- Statistics -- Measurement -- Reports, Environmental services industry, Environmental issues, Science and technology
Abstract

ABSTRACT Source types or source regions contributing to the concentration of atmospheric fine particles measured at Brigantine National Wildlife Refuge, NJ, were identified using a factor analysis model called Positive [...]

Published
2002

10. Effects of surface type and relative humidity on the production and concentration of nitrous acid in a model indoor environment

Author

Wainman, Thomas, Weschler, Charles J., Lioy, Paul J., and Zhang, Junfeng

Subjects
Humidity -- Research, Wallpaper -- Research, Carpets -- Research, Polytetrafluoroethylene -- Research, Nitrogen dioxide -- Research, Gases industry -- Research, Environmental issues, Science and technology
Abstract

The following study utilized a nested chamber design which was constructed to observe the effects of three surface types (wallpaper, carpet and teflon) and two levels of relative humidity (50% and 70% RH) on gas-phase nitrous acid (HONO) formation through the heterogeneous reaction of nitrogen dioxide (NO(sub2)) with sorbed water vapor. It has been proven that the use of unvented combustion home appliances results in high indoor concentrations of NO(sub2), which is a concern because of it's power to irritate the respiratory tract.

Published
2001

11. Secondary formation and the Smoky Mountain organic aerosol: an examination of aerosol polarity and functional group composition during SEAVS

Author

Blando, James D., Porcja, Robert J., Li, Tsung-Hung, Bowman, David, Lioy, Paul J., and Turpin, Barba J.

Subjects
Air pollution -- Research, Aerosols -- Research, Atmospheric research -- Environmental aspects, Environmental issues, Science and technology
Abstract

Direct Fourier transform infrared spectroscopy allowed the separation by polarity and identification of aerosol collected during the Smoky Mountain Aerosol and Visibility Study at Look Rock, TN. Results also revealed that the submicron organic aerosol was predominantly polar. The concentrations, composition and size distribution of the Smokey Mountain aerosol is governed by secondary formation processes.

Published
1998

12. Chemical mass balance source apportionment of lead in house dust

Author

Adgate, John L., Willis, Robert D., Buckley, Timothy j., Chow, Judith C., Watson, John G., Rhoads, George G., and Lioy, Paul J.

Subjects
Lead -- Measurement, Lead based paint -- Environmental aspects, Dust -- Analysis, Environmental issues, Science and technology
Abstract

Crustal materials, deposited airborne particulates and other exterior, as well as interior sources contribute to the amount of lead present in house dust. About two-thirds of house dust lead present in urban homes is being attributed to exterior proximate sources. One-third of house dust lead present in urban homes, meanwhile, comes from interior lead-based paint sources.

Published
1998

13. Integrated exposure and dose modeling and analysis system. 1. Formulation and testing of microenvironmental and pharmacokinetic components

Author

Georgopoulus, Panos G., Walia, Ashwin, Roy, Amit, and Lioy, Paul J.

Subjects
Pharmacokinetics -- Research, Pollutants -- Research, Environmental issues, Science and technology
Abstract

The Exposure and Dose Modeling and Analysis System (EDMAS) is a modular integrated system aimed at providing state-of-the-art tools for doing integrated assessments of microenvironmental and pharmacokinetic components exposure and dose for individuals and population. The system makes use of computational tools and various data retrieval, management, statistical analysis, and visualization methods to integrate the modeling of the components.

Published
1997

15. Indoor air chemistry: formation of organic acids and aldehydes

Author

Zhang, Junfeng, Wilson, William E., and Lioy, Paul J.

Subjects
Aldehydes -- Research, Organic acids -- Research, Indoor air quality -- Research, Environmental issues, Science and technology
Abstract

Research has indicated that aldehydes and organic acids can be formed as a result of indoor air chemistry. This phenomenon was confirmed in an experiment that simulated typical indoor conditions. In the experiment, gas-phase reactions of ozone with the unsaturated VOCs 4-vinylclohexene, limonene and styrene were used to generate formaldehyde and formic acid. Benzaldehyde was also formed as a result of the reaction between styrene and ozone.

Published
1994

16. Characteristics of aldehydes: concentrations, sources, and exposures for indoor and outdoor residential microenvironments

Author

Junfeng Zhang, Qingci He, and Lioy, Paul J.

Subjects
Aldehydes -- Research, Formaldehyde -- Research, Atmospheric chemistry -- Research, Air pollution -- Environmental aspects, Environmental issues, Science and technology
Abstract

The concentrations, exposures and the role of aldehydes in the ozone layer were investigated by using their indoor and outdoor measurements. Aldehydes, which are known health hazards, are also components of photochemical smogs. Samples from nine aldehydes were taken and analyzed. Results showed a high concentration of aldehydes indoors and the relative abundance of formaldehydes. Aldehydes were also detected in ozone concentrations in indoor samples. Outdoor exposures to formaldehydes and total aldehydes, however, were negligible compared to values obtained from indoor exposures.

Published
1994

17. Do we know enough to take a risk-based approach?

Author

North, D. Warner, Deisler, Paul, Mirer, Frank, Omenn, Gilbert S., Lioy, Paul J., Cooper, William, Auerbach, Stanley, Harwell, Mark A., Graham, John D., Kim, Nancy, Finkel, Adam M., and Burke, Thomas A.

Subjects
Risk assessment -- Usage, Scientists -- Environmental policy, Environmental policy -- Management, Environmental protection -- Methods, Environmentalists -- Environmental policy, Environmental issues
Published
1991

18. Exposure to chromium dust from homes in a chromium surveillance project

Author

Freeman, Natalie C.G., Stern, Alan H., and Lioy, Paul J.

Subjects
Chromium -- Health aspects, Dust -- Health aspects, Environmental issues, Health
Abstract

Investigators used a Lioy-Weisel-Wainman sampler to analyze the chromium content in house-dust samples obtained from households near chromium waste sites in Hudson County, New Jersey. Chromium concentrations in dust ([micro]g/g)--indicative of nonbackground source contributions--were significantly higher in Jersey City homes than in control homes outside of Hudson County (228 and 111 [micro]g/g, respectively; p [is less than] .001). Chromium dust loadings on surfaces (ng/[cm.sup.2]), representing the amount of chromium available for contact and a direct measure of exposure potential, were also higher in Jersey City homes than in control homes (31 ng/[cm.sup.2] and 14 ng/[cm.sup.2], respectively; p = .008). Near some of the sites, investigators found elevated chromium dust loads more frequently in homes occupied by at least one household member who had elevated urine chromium, as determined in a separate screening project, than in homes occupied by members whose urine chromium was not elevated. Individuals with elevated urine chromium levels were found less frequently in homes in which good housekeeping practices were evident than in homes absent such practices., DURING THE PAST 10 Y, investigators have identified more than 160 chromate production waste sites within Hudson County, New Jersey--particularly within Jersey City.[1] These sites are distributed throughout the community [...]

Published
1997

19. Breath ammonia depletion and its relevance to acidic aerosol exposure studies

Author

Norwood, Daphne M., Wainman, Thomas, Lioy, Paul J., and Waldman, Jed M.

Subjects
Ammonia -- Physiological aspects, Acids -- Physiological aspects, Aerosols -- Physiological aspects, Environmental issues, Health
Abstract

. It is thought that gaseous ammonia in breath neutralizes acidic air pollution and thereby potentially mitigates the pulmonary effects of pollution. The efficacy of breath ammonia depletion methods reported in recent acid aerosol exposure-health response studies was investigated. Fourteen subjects (21 to 54 y of age) performed one or more of the following hygiene maneuvers: (a) acidic oral rinse (pH 2.5); (b) tooth brushing, followed by acidic oral rinse; (c) tooth brushing, followed by distilled water rinse; and (d) distilled water rinse. Initial ammonia levels ranged from 120 to 1 280 ppb (147-1 570 [micro]g/[m.sup.3]). Acidic rinsing resulted in an immediate 90% reduction in exhaled ammonia in all subjects, and a return to 50% of baseline levels occurred within 1 h. Depletion that resulted from tooth brushing or distilled water alone was not significant. It was concluded that acidic oral rinsing is an effective method of reducing airway ammonia, but repeated oral rinsing may be required to maintain consistent, low-breath-ammonia conditions during acid aerosol exposure studies., AMBIENT AMMONIA neutralizes sulfuric acid aerosols, and its neutralization products--([NH.sub.4])[2S0.sub.4] and [NH.sub.4][HSO.sub.4]--are thought to have significantly less irritant potency than [H.sup.2.SO.sup.4].[1,2] The relative acidity of acid aerosols has been associated [...]

Published
1992

21. Effects of Air Pollution on Children's Respiratory Health in Three Chinese Cities

Author

QIAN, ZHENGMIN, CHAPMAN, ROBERT S., TIAN, QIUXUE, CHEN, YANG, LIOY, PAUL J., and ZHANG, JUNFENG

Subjects
Wuhan, China -- Environmental aspects, Air pollution -- Health aspects, Respiratory insufficiency in children -- Causes of, Prevalence studies (Epidemiology) -- Analysis, Environmental issues, Health
Abstract

During the winter of 1988-1989, parents of 2,789 elementary-school students completed standardized questionnaires. The students were 5-14 y of age and were from three urban districts and one suburban district of three large Chinese cities. The 4-y average ambient levels of total suspended particles in the three cities differed greatly during the period 1985-1988: Lanzhou, 1,067 [micro]g/[m.sup.3]; urban Wuhan, 406 [micro]g/[m.sup.3]; Guangzhou, 296 [micro]g/[m.sup.3]; and suburban Wuhan, 191 [micro]g/[m.sup.3]. The authors constructed unconditional logistic-regression models to calculate odds ratios and 95% confidence intervals for prevalences of several respiratory symptoms and illnesses, adjusted for district, use of coal in the home, and parental smoking status. There was a positive and significant association between total suspended particle levels and the adjusted odds ratios for cough, phlegm, hospitalization for diseases, and pneumonia. This association was derived from only the 1,784 urban children and, therefore, the authors were unable to extrapolate it to the suburban children. The results also indicated that parental smoking status was associated with cough and phlegm, and use of coal in the home was associated only with cough prevalence ([Alpha] - 0.05)., MANY REPORTS regarding the effects of indoor and outdoor air pollution on children's respiratory health have appeared in the scientific literature, including studies conducted in the People's Republic of China [...]

Published
2000

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