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Saturday, July 11, 2020 | History

1 edition of Measurement and source apportionment of PM ́́ roadway emissions found in the catalog.

Measurement and source apportionment of PM ́́ roadway emissions

Measurement and source apportionment of PM ́́ roadway emissions

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Published by Washington State Dept. of Transportation, Available through the National Technical Information Service in [Olympia, Wash.], [Springfield, Va .
Written in English

    Subjects:
  • Air -- Pollution -- Washington (State) -- Measurement.,
  • Air -- Pollution -- Idaho -- Measurement.,
  • Dust -- Measurement.

  • Edition Notes

    Statementby Candis Claiborn ... [et al.]
    ContributionsClaiborn, Candis., Washington (State). Dept. of Transportation., Washington State Transportation Commission., Washington State Transportation Center.
    The Physical Object
    Paginationvi, 85 p. :
    Number of Pages85
    ID Numbers
    Open LibraryOL14700684M

      In Brazil, the principal source of air pollution is the combustion of fuels (ethanol, gasohol, and diesel). In this study, we quantify the contributions that vehicle emissions make to the urban fine particulate matter (PM ) mass in six state capitals in Brazil, collecting data for use in a larger project evaluating the impact of air pollution on human by:   Particulate matter ≤ μm (PM) was measured during two 1-week campaigns in each school, both outdoors and in the classroom. Source apportionment resulted in nine sources: mineral, organic/textile/chalk, traffic, secondary sulfate and organics, secondary nitrate, road dust, metallurgy, sea spray, and heavy oil by:

      The identified location of the source for factor 2 was to the southeast of the measurement station, where there is a major road about 30 m away from the monitoring site. This proximity supports the assignment of factor 2 to fresh motor vehicle emissions from local traffic such as gasoline-powered cars or light by: Source apportionment. Sources of PM in downtown Boston were identified using two different methods: US Environmental Protection Agency PMF (ref. 9) and the absolute principle component analysis (APCA). 10 These methods were selected because both have been extensively used in fine particulate source apportionment in the past. 14, 18, 19Cited by:

    PM is a heterogeneous mix of chemical elements and sources, with road traffic being the major source in large cities. A significant part of these emissions come from non-exhaust processes, such as brake, tire, road wear, and road dust : Academic Press. Size distributions of polycyclic aromatic hydrocarbons in aerosol emissions from biofuel combustion. Journal of Aerosol Science , 33 (3), DOI: /S(01) Nasr Yousef M.J Omar, Bin Abas, Kamal Aziz Ketuly, Norhayati Mohd by:


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Measurement and source apportionment of PM ́́ roadway emissions Download PDF EPUB FB2

Measurement and Source Apportionment of PM10 Roadway Emissions Author: Candis Claiborn, Arundhati Mitra, Brian Lamb, Hal Westberg Subject: Air quality management, Exhaust gases, Measurement, Methodology, Particulates, Pavements, Pollutants, Surface course \(Pavements\), Unpaved roads Keywords.

The objectives of this research are to develop a methodology for assessing PM 10 emissions from roads, and to compare emission factors developed from this method to those published factors currently in use by regulatory agencies.

Upwind and downwind concentrations of PM 10 were monitored at several paved and unpaved roadway sites in eastern Washington and northern Idaho.

Consequently, with respect to the central European countries, the humidity of road surface is lower and leaves to higher road dust emissions.

Previous source apportionment studies reveal that PM 10 pollution in Barcelona is mainly driven by local sources: road traffic exhaust (21%), non-exhaust (17%) and construction sites (25%) (Amato et al., a).Cited by: In line with the assumptions made by comparing the diagnostic ratios of PAHs, which showed that the majority of the PAHs originated from diesel exhaust and suggested that diesel exhaust was a major source of PM 10, the source apportionment shows diesel exhaust was the second largest source of PM 10 inside the by: A Bayesian source apportionment (SA) method is developed to provide source impact estimates and associated uncertainties.

Bayesian-based ensemble averaging of multiple models provides new source profiles for use in a chemical mass balance (CMB) SA of fine particulate matter (PM). The approach estimates source impacts and their uncertainties by using a short-term application of four Cited by: In the field of atmospheric sciences, source apportionment (SA) models aim to re-construct the impacts of emissions from different sources of atmospheric pollutants, e.g., particulate matter (PM), based on ambient data registered at monitoring sites (Bruinen de Bruin, Koistinen, Yli-Tuomi, Kephalopoulos, & Jantunen,Hopke and Song,Watson et al., ).

There are three main Cited by: PM Emission. Results and Discussion • Source Apportionment Stationary Sources. Source Apportionment of Tehran's Air Pollution by Emissions Inventory Author: PARAND Created Date: 8/27/ AM. Road Construction Miles of roadway constructed Slate to counly apportionment using bousing stall data if necessary Duration of road construction activity Miles to acres conversions by type of roadway constructed Emission factor of tons/acre-month Uncontrolled PM emissions from roadVvay construction activities Figure The emission rates of gas-phase, semivolatile, and particle-phase organic compounds ranging in carbon number from C1 to C27 were measured from institutional-scale food cooking operations that employ seed oils.

Two cooking methods and three types of seed oils were examined: vegetables stir-fried in soybean oil, vegetables stir-fried in canola oil, and potatoes deep fried in hydrogenated soybean Cited by: Significant differences have been reported between dynamometer and real-world studies on PNC.

A mean diameter of 15 nm for PM emissions was measured in Leipzig, Germany in a street canyon though some lab-studies on gasoline and diesel engines have shown mean diameters between 40 and 70 nm (Wehner et al., ).Cited by: Source apportionment vs.

emission inventories of non-methane hydrocarbons (NMHC) in an urban area of the Middle East: Local and global perspectives October Atmospheric Chemistry and Physics. There are several source apportionment procedures with different levels of complexity and data requirements which can be source-oriented and/or receptor-oriented.

The classic source-oriented procedure is the use of emission factors to calculate pollutant generation based on the technology being employed and fuel usage. Source apportionment of traffic emissions of particulate matter using tunnel measurements Samantha Lawrencea, Ranjeet Sokhia, Khaiwal Ravindrab,*, Hongjun Maoa, Hunter Douglas Praina, Ian D.

Bullc aCentre for Atmospheric and Instrumentation Research (CAIR), University of Hertfordshire, Hatfield, Hertfordshire AL10 9AB, United Kingdom b School of Public Health, Post Graduate Institute. Based on emission factors derived from the AP algorithm, particulate matter from paved roads has been estimated to be a major source of PM 10 of geologic origin.

Questioner’s Name: Jerzy Bartnicki. Question: What method have you used for calculating contributions from individual sources and how did you take care of non-linear effects?.

Answer: We used the PSAT (Particle Source Apportionment Technology) tool of CAMx is a reactive tracer method where a single tracer tracks the primary PM species, on the other hand, Author: S. Aksoyoglu, G. Ciarelli, I. El-Haddad, U. Baltensperger, A. Prévôt. Sorting out the various sources of pollution is known as source apportionment.

A number of tools are used to try to locate the sources of pollutants. A number of tools are used to try to locate the sources of pollutants. Based on emission factors derived from the AP algorithm, particulate matter from paved roads has been estimated to be a major source of PM 10 of geologic origin.

This is an empirical formula based on upwind-downwind measurement of PM 10 concentrations and is dependent solely on the silt loading of the pavement and the weight of vehicles. A number of upwind-downwind studies conducted in.

A dilution source sampling system was used to quantify the organic air pollutant emissions from commercial-scale meat charbroiling operations. Emission rates of gas-phase volatile organic compounds, semivolatile organic compounds, and high molecular weight particle-phase organic compounds were simultaneously quantified on a single compound by: Primary particulate matter (PM) (also known as direct PM) means particles that enter the atmosphere as a direct emission from a stack or an open source.

Primary PM has two components: Filterable PM and condensable PM. These two PM components have no upper particle size limit. Primary PM (also known as direct PMtotal PMPM Source apportionment of traffic emissions of particulate matter using tunnel measurements Article in Atmospheric Environment – October with Reads How we measure 'reads'.

The Phoenix PM 10 Study, Volume II: Source apportionment. EC ratios based on emission inventory. On-road: poor spatial representativeness and measurement errors was addressed for.Engine Emissions Measurement Handbook, developed and co-authored by HORIBA Automotive Test Systems team addresses the main aspects of this subject.

Written with the technical user in mind, this title is a must-have for those involved in engine development and testing, and environmental researchers focusing on better ways to minimize emissions.A site-specific particulate matter PM source apportionment model has been used to estimate the contributions from local primary PM emissions, regional primary PM emissions and the regional.