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Quantification of Benzene in 150 Ambient Air Samples Final Report Period June 16 August 151977
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Procedures for Collecting Ambient Air Samples / How EPA ~ Criteria pollutants mean air pollutants for which National Ambient Air Quality Standards have been established. You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more. Ambient Air Sampling (PDF) (26 pp, 278 K, 3/28/2016, SESDPROC-303-R5)
Ambient Concentrations of Benzene - U.S EPA Web Server ~ Benzene is an air toxic emitted from gasoline service stations, motor vehicle exhaust and fuel evaporation, the burning of coal and oil, and various other sources. In addition to being a common air pollutant, benzene may also contaminate water. Urban areas generally have higher ambient air concentrations of benzene than other areas.
Monitoring of Benzene in Ambient Air with Organic Vapor Badges ~ Monitoring of Benzene in Ambient Air with Organic Vapor Badges Kochy K. Fung and Barbara J. Wright ERT Newbury Park, California Benzene is a toxic substance commonly found in ambient air, especially in the urban environment. Benzene is an in-dustrial solvent and is also a component of gasoline, typical-ly present in concentrations of 1-2 percent.
Ambient Air Benzene Concentrations in Canada (1989-1993 ~ uled sample collection period. This was done to purge the sample lines and the pump with ambient air. The pump drew air at a flowrate of 1 to 2 L/min. The sample flow was split to a mass flow controller that allowed a constant flow of 10 to 15 mL/min to the canister, with the remaining air exhausted. Canister samples were shipped to the laboratory
a year long study of ambient air concentrations of benzene ~ 30th day, to obtain 12 air samples at the same nine sampling positions. The results from diffusive monitoring indicated that the mean annual benzene-in-air concentration around the service station was 3.8 µg/m3 (range of the means was 1.6 - 6.9 µg/m3). The individual two-week samples gave benzene levels in the range <1.0 - 10.6 µg/m3.
Concentrations and trends of benzene in ambient air over ~ 1. Introduction. One of the emerging areas in air pollution management is the measurement and mitigation of ambient toxics. Several states as well as the USEPA have initiated monitoring of air toxics in recent years (Air toxics website, 2004a).In New York State, systematic measurement of toxic compounds started in 1990 with monitors located both in urban and rural areas to provide spatial and .
Journal of Chemical and Pharmaceutical Research, 2012, 4(6 ~ The samples are subjected to analysis for Benzene and BAP using GC-MS based on USEPA Compendium method TO 3 for Benzene and TO 13A for BAP. By using GC-MS we can able to determine the Benzene levels in Ambient air minimum 0.01µg/m 3 and by using GC we can able to determine the BAP levels of Ambient Air Particulate phase minimum 0.01ng/ m 3.
Characterization of Benzene and Other Air Toxics in Akwesasne ~ QEstimate ambient benzene concentrations from emission inventories using dispersion modeling. 13 . Q9 ambient air samples, 1 field blank and 1 collocated sample (duplicate) . 8/11/2007 0.49 0.78 0.16 1.07 1.46 2.82 0.65 0.99
Simple and accurate quantification of BTEX in ambient air ~ The per capita mortality rate attributable to ambient air pollution (per 10⁵ adults per year) was less than 150 in nine cities, between 150-204 in nine cities, and between 276-373 in three .
Background Indoor Air Concentrations of Volatile Organic ~ ambient air. The samples were obtained from U.S. and foreign locations and included numerous commercial buildings, schools, and residences. Hodgson and Levin (2003) compiled central tendency data (mean and median) and maximum concentrations for a large number of VOCs, and the 90th and 95th
Standard - Ambient air quality - Standard method for ~ Ambient air quality - Standard method for measurement of benzene concentrations - Part 5: Diffusive sampling followed by solvent desorption and gas chromatography - SS-EN 14662-5:2005This part of EN 14662 is in accordance with the generic methodology selected as the basis of the European Union for the determination of benzene in ambient a.
a preliminary study of ambient air benzene around ~ a similar order to the air quality standards proposed for benzene in some European countries. A further study is in progress to assess the variability of ambient benzene levels around one service station over a period of 12 months.
Ambient Air Monitoring for Benzene: 24-Hour Integrated ~ Both ends were sealed with compression fittings to complete the assembly of a sample cartridge. In field use, the fittings were removed and one end was connected to an ambient air sampler for the collection of a 24-hour benzene sample. After sampling, the compression fittings were reinstalled and the cartridges sent to the analysis laboratory.
Comparison of measurement methods for benzene in ambient air ~ Comparison of measurement methods for benzene in ambient air 3 Figure 1. Sampling tubes for diffusive (passive) and pumped (active) monitoring of gases in ambient air. a) Duplicate holder contains 2 sampling tubes with end caps, b) Capped tube for storage and transport, c) sampling tube prior to automatic analysis.
Ambient and Emission Trends of Toxic Air Contaminants in ~ averages, ambient air samples have been collected and speciated for TACs.42 TAC trends were derived using all monitoring sites in the ARB’s air quality database.43 Considering the earliest years for which reliable ambient data (late 1980s) and emission inventory data (1990) were available, 1990 was used as the starting point for this study.
Atmospheric benzene observations from oil and gas ~ Benzene is classified as an air toxic under the USA Clean Air Act in section 112, and is a known human carcinogen (IARC Group 1). Health effects associated with benzene exposure include leukemia, anemia and other blood disorders and cancers, immune system impairment, decreased respiratory function, and neural tube defects in newborn babies .
Elevated Atmospheric Levels of Benzene and Benzene-Related ~ Objectives. The objectives of this study are to evaluate ambient air for the presence of benzene and benzene[s] in residential areas where unconventional shale E&P is occurring and to determine if atmospheric levels of benzene and benzene[s] are elevated due to E&P activity when compared to the U.S. EPA Urban Air Toxics Monitoring Program (UATMP).
Quantification of benzene in groundwater sources and risk ~ The benzene concentration levels estimated in the groundwater samples at different corporate locations in the months of Jan 2011, Feb 2011 and Mar 2011 are shown in Table. 1.The average values of groundwater samples at corporate locations were in the range of 0.016–0.041 mg L −1, 0.060–0.099 mg L −1, 0.026–0.138 mg L −1, 0.044–0.100 mg L −1, 0.030–0.099 mg L −1 and 0.028 .
Benzene: Environmental Sources of Contamination, Ambient ~ The flame ionization (FI) detector used with the gas chromatograph was sensitive enough for detection of individual aromatic hydrocarbons in the 0.05 - 1 ppm range in synthetic smogs (Altshuller and demons, 1962) and in the 0.005 to 4 ppm range in ambient air samples (Altshuller and Bellar, 1963). 24
Ambient BTEX levels over urban, suburban and rural areas ~ Atmospheric concentrations of BTEX (benzene, toluene, ethylbenzene and xylene) were measured at a semi-urban site in Orleans, France, from October 2010 to August 2011. Air samples were collected .
Technical/Application Article 11 ~ Benzene is present in refined fuels and thus gives a response. Conc.(ppm) * Higher concentrations may decrease benzene response. ** Methane does not decrease tube capacity or give a response, but above 10,000 ppm it will decrease benzene readings. STEL Tests Three samples were prepared at a major oil refinery in northern California.
Overview of the Benzene and Other Toxics Exposure (BEE-TEX ~ The Benzene and other Toxics Exposure (BEE-TEX) field study was an experimental campaign designed to demonstrate novel methods for measuring ambient concentrations of hazardous air pollutants (HAPs) in real time and to attribute these concentrations to quantified releases from specific emission points in industrial facilities while operating outside facility fence lines.
Technical/Application Article 11 - Ion Science Ltd ~ Benzene is present in refined fuels and thus gives a response. 15 * Higher concentrations may decrease benzene response. ** Methane does not decrease tube capacity or giveXylene a response, but above 10,000 ppm it will decrease benzene readings. STEL Tests Three samples were prepared at a major oil refinery in northern California.
JV TASK 86 – IDENTIFYING THE SOURCE OF BENZENE IN INDOOR ~ BENZENE IN INDOOR AIR USING DIFFERENT COMPOUND CLASSES FROM TO-15 DATA Final Report (for the period of January 1, 2005, through December 31, 2006) Prepared for: AAD Document Control U.S. Department of Energy National Energy Technology Laboratory 626 Cochrans Mill Road PO Box 10940, MS 921-107 Pittsburgh, PA 15236-0940
Benzene (EHC 150, 1993) - INCHEM2 ~ Analytical methods for the determination of benzene Sample Preparation Analytical method a Detection limit b Reference Air silica gel trap indicator tube 4.9 mg/m 3 Koljkowsky (1981) Air charcoal trap, CS 2 desorption GC/FID 3.2 µg/m 3 Baxter et al. (1980) Air (ambient) Tenax GC sorbent, thermal desorption capillary GC/MS NR Pellizzari (1982 .