Studies of polycyclic aromatic hydrocarbons in urban atmospheres. by Paul Crossley

Cover of: Studies of polycyclic aromatic hydrocarbons in urban atmospheres. | Paul Crossley

Published by University of Aston in Birmingham. Department of Chemistry in Birmingham .

Written in English

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Thesis (Ph.D.) - University of Aston in Birmingham 1980.

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Open LibraryOL13774613M

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Among these compounds, the polycyclic aromatic hydrocarbons (PAHs) are semivolatile species formed trough the fusion of two or more benzene rings by a pyrolitic process during the incomplete combustion of carbonaceous by: 6. Polycyclic Aromatic Hydrocarbons in the Urban Atmosphere of Mexico City 85 Torres et al.

(), where PAHs associated with PM 10 were determined in at two of the. Airborne Polycyclic Aromatic Hydrocarbons (PAH) in Bangkok Urban Air: Part II. Level and Distribution Article (PDF Available) in Polycyclic Aromatic Compounds 18(3).

Polycyclic Aromatic Hydrocarbons (PAHs) in Urban aters 3 discharges, stormwater runoff, landfill leachate, and surface runoff.

Many studies have been conducted recently regarding runoff sources of PAHs. Rainfall runs off parking lot and road surfaces, transporting PAHs that originate from tire particles, leaking motor oil, vehicle exhaust. Polycyclic aromatic hydrocarbons (PAHs) were measured in environmental samples (sponges, fish and sediment) collected in and from the Faroe-Shetland Channel and Rosemary Bank Seamount.

3 atmospheric transformations of polycyclic aromatic hydrocarbons GENERAL CONSIDERATIONS: PERSISTENCE AND TRANSFORMATIONS OF PAHs The atmospheric persistence of PAHs has received considerable attention in recent years and continues to be actively investigated.

Nine polycyclic aromatic hydrocarbons (PAHs) and four nitropolycyclic aromatic hydrocarbons (NPAHs) in the extracts from the particulates were analysed by HPLC with fluorescence and chemiluminescence detections, by: The temporal variations and major sources of polycyclic aromatic hydrocarbons (PAH) intrinsic to PM10 were investigated over a tropical urban atmosphere on.

Polycyclic aromatic hydrocarbons (PAHs) are a large group of organic compounds with two or more fused aromatic rings. They have a relatively low solubility in water, but are highly lipophilic.

Most of the PAHs with low vapour pressure in the air are adsorbed on particles. When dissolved in Studies of polycyclic aromatic hydrocarbons in urban atmospheres.

book or adsorbed on particulate matter, PAHs can undergo Cited by: A wide range of aromatic compounds has benzene rings located in ortho positions. These are called condensed or fused rings. Aromatic compounds with two or more fused aromatic benzene rings are called polycyclic aromatic hydrocarbons (PAH) and they have the general formula C 4r+2 H 2r+4 for rings without substituents, where r = number of rings.

Although the emphasis of this report is on the identification of the polycyclic aromatic hydrocarbons (PAHs) emitted from motor vehicles, PAHs are ubiquitous substances. They are found in terrestrial and aquatic plants, in soils and bottom sediments, in fresh and marine waters, in emission from volcanoes and naturally occurring forest fires, and in the products of.

Polycyclic aromatic hydrocarbons (PAHs) and carbonyls compounds are becoming a major component of atmospheric toxic air pollutants (TAPs) in Hong Kong. Many studies in Hong Kong show that traffic emission is one of the most significant contributors in urban area of Hong by: Nitro-polycyclic aromatic hydrocarbon concentrations and sources in urban and suburban atmospheres of the Mid-Atlantic region May Atmospheric Environment 37(15) Sixteen polycyclic aromatic hydrocarbons (PAH) were measured in total suspended particulate matter (TSPM) samples collected at an urban and industrial cum residential site in Agra (India) from December to December The average total PAH concentration was found to be ± 17 ng m The mea.

Polycyclic aromatic hydrocarbons (PAH) partition from the atmosphere to vegetation, soil, water, and sediment. In an effort to quantitate vegetation's ability to scavenge PAH, we collected vegetation samples from urban, suburban, and rural locations during the summer and fall of and determined PAH burdens (ng/cm2) on a mass per total leaf surface area basis.

Polycyclic aromatic hydrocarbons (PAHs) are extensively studied compounds, and have been studied for a long time (Wang et al., ).

They are considered hazardous air pollutants in the group of non-halogenated organic compounds along with benzene, phenols, aldehydes, etc. PAHs exist in the atmosphere inFile Size: KB.

Polycyclic aromatic hydrocarbons (PAHs) among the urban air toxics are of global concern due to their multiple effects on human population. Attention is more importantly on PAHs bound to PM and ultrafine fraction of the airborne particulates that are reportedly known for their higher health risk [1, 2].Cited by: This is the first estimation of the contribution of ultrafine particles to the lung deposition of particle-bound polycyclic aromatic hydrocarbons (PAHs) in the atmosphere.

The size distributions of nine PAHs (4−6 rings) were measured at roadside and suburban sites in winter in Japan. Deposition efficiencies and fluxes of PAHs in ultrafine mode (Cited by: [1] Eighteen polycyclic aromatic hydrocarbons (PAHs) were simultaneously measured in surface seawater and boundary layer air from the North Pacific toward the Arctic Ocean during the Fourth Chinese National Arctic Research Expedition in the summer of Atmospheric Σ 18 PAH ranged from to pg m −3, with the highest concentrations observed in the Cited by: Vehicle exhaust is a major source of exposure to Polycyclic Aromatic Hydrocarbons (PAHs) found in the urban atmosphere.

Newsagents usually work close to heavy traffic flow. The purpose of this study was to assess the breathing zone exposure of newsagents to PAHs found in the urban atmosphere of Tehran City during summer and autumn seasons and Cited by: 1. Atmospheric Polycyclic Aromatic Hydrocarbons (PAH) in Manipur of the Northeast India: Monitoring on Urban, Rural, and Mountain Sites.

Polycyclic Aromatic Cited by: Total suspended particulate matter (TSP) was collected during the summer and winter in five cities in China (Shenyang, Beijing, and Shanghai), Russia (Vladivostok), and Korea (Busan) from to Nine polycyclic aromatic hydrocarbons (PAHs) with four to six rings, including pyrene (Pyr) and benzo[a]pyrene (BaP), were determined using high-performance liquid Author: Kazuichi Hayakawa, Ning Tang, Edward Nagato, Akira Toriba, Jin-Min Lin, Lixia Zhao, Zhijun Zhou, Wu.

Source Apportionment of Polycyclic Aromatic Hydrocarbons in the Urban Atmosphere: A Comparison of Three Methods. Environmental Science & Technology37 (9), DOI: /es Barnabé Ngabé and, Laurier Poissant. Polycyclic Aromatic Hydrocarbons in the Air in the St.

Lawrence Basin (Québec).Cited by: The Mechanisms of Atmospheric Oxidation of the Aromatic Hydrocarbons Jack G. Calvert, Roger Atkinson, Karl H. Becker, Richard M. Kamens, John H.

Seinfeld, Timonthy H. Wallington, and Greg Yarwood. Levels of Polycyclic Aromatic Hydrocarbons (PAHs) in Atmospheric Environment of Urban Areas in Latin America. Polycyclic Aromatic Compounds: Vol. 38, No. 2, pp. Cited by: 2. Polycyclic aromatic hydrocarbons (PAHs) in suspended particulate matter (SPM) contribute significantly to health risk.

Our objectives were to assess the size distribution and sources of 26 PAHs and 11 polycyclic aromatic compounds (PACs) in Cited by: n-Alkanes and polycyclic aromatic hydrocarbons (PAHs) were identified in particle-sized aerosols of the urban and rural atmospheres of Guangzhou, of the organic compounds were mainly associated with fine particles with aerodynamic diameters less than μm in the urban and rural by: Polycyclic aromatic hydrocarbons (PAHs) were measured near Interst just east of Research Triangle Park, North Carolina, USA.

The goals of this project were to ascertain whether a sufficient quantity of PAHs could be collected using low flow ( L/minute) over 8-h periods and if so, do investigate how the PAHs correlate to local sources, atmospheric pollutants and Author: Dennis K.

Mikel, Viney P. Aneja. Atmospheric Environment 37 () – Particle-associated polycyclic aromatic hydrocarbons in urban air ofHong Kong H.

Guoa,*, S.C. Leea, K.F. Hoa, X.M. Wangb, S.C. Zouc aDepartment of Civil and Structural Engineering, Research Centre for Urban Environmental Technology and Management, The Hong Kong Polytechnic University, Hung Hom, Kowloon.

(). Airborne Polycyclic Aromatic Hydrocarbons in Suspended Particulates from the Urban Atmosphere of Rijeka, Croatia. Polycyclic Aromatic Compounds: Vol. 35, The 24th International Symposium on Polycyclic Aromatic Compounds - IS pp.

Cited by: 5. Nitrated polycyclic aromatic hydrocarbons (nPAHs) are ubiquitous environmental pollutants, which exhibits higher toxicity than their corresponding parent PAHs (pPAHs).Recent studies demonstrated that the nPAHs could represent major soil pollution, however the remediation of nPAHs has been rarely this study, biological, physical, and chemical methods have.

Suggested Citation:"APPENDIX B: POLYCYCLIC AROMATIC HYDROCARBONS IN THE AMBIENT ATMOSPHERE."National Research Council. Polycyclic Aromatic Hydrocarbons: Evaluation of Sources and gton, DC: The National Academies Press. doi: / The study was conducted at 15 sites located in the north, south, east, west, and central parts of Tehran in Air samples were analyzed for 16 polycyclic aromatic hydrocarbons (PAHs) by HPLC.

The daily PM 10 concentrations at the peak of traffic in roadside areas were found to be – µg m −: F. Halek, M. Keyanpour-rad, A. Kavousi. Polycyclic aromatic hydrocarbons (PAHs) are worldwide pollutants produced mainly during incomplete combustion and pyrolysis of organic substances.

PAH derivatives are components with hydrogen on the aromatic ring substituted by carbonyl- nitro- and hydroxyl-functional groups (N-PAH, O-PAH or OH-PAH), or a group of heterocyclic PAHs containing Cited by: Polycyclic aromatic hydrocarbons (PAHs) have found applications in a variety of industries including dyes, drugs, semiconductors, fluorescent reagents, chemiluminescent reagents, and as polychromatic and antistatic additives for plastics.

This up-to-date, single volume reference source brings together all essential information on the physical and spectral properties, methods of. A simple device consisting of a Petri dish containing cellulose paper soaked with paraffin oil (hereinafter defined “artificial leaf”, AL) was deployed in a typical urban site and paritioning of a set of PAHs between the atmosphere and AL was investigated.

Gas-phase PAHs rapidly equilibrate with AL, thus ren. Polycyclic aromatic hydrocarbons (PAHs, also polyaromatic hydrocarbons or polynuclear aromatic hydrocarbons) are hydrocarbons—organic compounds containing only carbon and hydrogen—that are composed of multiple aromatic rings (organic rings in which the electrons are delocalized).The simplest such chemicals are naphthalene, having two aromatic rings, and.

Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous organic pollutants that raise environmental concerns because of their toxicity. Their accumulation in vascular plants conditions harmful consequences to human health because of their position in the food chain.

Consequently, understanding how atmospheric PAHs are taken up in plant tissues is crucial for risk Cited by: (). Airborne Polycyclic Aromatic Hydrocarbons (PAH) in Bangkok Urban Air: Part II.

Level and Distribution. Polycyclic Aromatic Compounds: Vol. 18, No. 3, pp. Unfortunately, this book can't be printed from the OpenBook. Visit to get more information about this book, to buy it in print, or to download it as a free PDF. Tsapakis M, Stephanou EG () Occurrence of gaseous and particulate polycyclic aromatic hydrocarbons in the urban atmosphere: study of sources and ambient temperature effect on the gas/particle concentration and distribution.

Environ Pollut (1)– PubMed CrossRef Google ScholarAuthor: Lakshika Weerasundara, Meththika Vithanage.Phase distribution and particle-size dependency of polycyclic aromatic-hydrocarbons in the urban atmosphere.

Chemosphere Crossref, Google Scholar; Bosetti C, Boffetta P, La Vecchia C. Occupational exposures to polycyclic aromatic hydrocarbons, and respiratory and urinary tract cancers: a quantitative review to Cited by: This research investigated the distribution and contribution of polycyclic aromatic hydrocarbons (PAHs) and nitro-polycyclic aromatic hydrocarbons (NPAHs) bound to particulate matter (PM) emitted from open burning of rice straw (RS) into the atmosphere in the north of Vietnam.

The experiments were conducted to collect PM and total suspended Cited by: 2.

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