Ambient Air Voc Articles on Environmental XPRT

Case study : VOC analysis in ambient air by FID dectection - Complete system airmOzone

Ozone concentration has been multiplied by 5 in the last century in the middle latitudes of the northern hemisphere from 10 PPB in 1874 to approximately 50 PPB today. This is an increase of 1.6% per year; the trend is probably higher (2.4% a year) over the last decades. (Chapter 1 of the International Geosphere-Biosphere Program - World Climate Research Program) In order to stop this global ...

Feb. 28, 2017

By Chromatotec Group

Ambient Air Quality in India - An Alarming Report

Are we mortgage India against air pollution? The answer may be “Yes”. The reason is India has witnessed a phenomenal increase in the number of industries and vehicles in the last decade, along with the mushrooming of cities. As a consequence, there has been a dramatic deterioration in the quality of urban air in most regions of the country particularly in big cities like Delhi, Mumbai, Kolkatta ...

Jun. 5, 2007

What is the size distribution and sources of particles in ambient air?

The particle sizes in the ambient air are ranged from 1 nanometer to slightly more than 10 micrometers. There are three modes: coarse, fine and nano. The course mode particles are road dusts, spores and pollens. The minimum sizes of these particles are 1 to 3 micrometers. The fine mode particles are generally secondary particles formed from reactions such as smoke, sulfates, nitrates, ammonium ...

Jul. 29, 2011

By American Filtration & Separations Society

Stack gas VOC monitoring

POLLUTION S.r.l. manufactures POLARIS FID analyzer, a cutting-edge technology for the measurement of total hydrocarbons in ambient air and stack emission monitoring in accordance with EN 13526 and EN 12619. This analyser is based on Flame Ionization Detection (FID), a reference method technique to measure total hydrocarbons (THC, VOC, TOC). Polaris FID is a very handy instrument because it allows ...

Dec. 23, 2013

By Pollution Srl

Reducing Odor and VOC Emissions

The Montgomery County Regional Composting Facility (MCRCF) in Silver Spring, Maryland is designed to process 400 wet tons/day of lime amended biosolids from the Blue Plains Wastewater Treatment Plant (WWTP) in Washington, D.C. Recently, political pressures forced operations to cease at the MCRCF. Although the aerated static pile composting plant’s fate has not been completely decided, its owner, ...

Jan. 1, 1999

By BioCycle Magazine

Vertical and Diurnal characterization of volatile organic compounds in ambient air in Urban areas

More than half of the world’s population lives in cities, and their populations are rapidly increasing. Information on vertical and diurnal characterizations of volatile organic compounds (VOCs) in urban areas with heavy ambient air pollution can help further understand the impact of ambient VOCs on the local urban environment. This study characterized vertical and diurnal variations in ...

Jun. 29, 2011

By Air & Waste Management Association (A&WMA)

Weekday/Weekend Differences in Ambient Air Pollutant Concentrations in Atlanta and the Southeastern United States

Abstract The authors quantified changes between mean weekday and weekend ambient concentrations of ozone (O3) precursors (volatile organic compounds [VOC], carbon monoxide [CO], nitric oxide, and oxides of nitrogen [NOx]) in Atlanta and surrounding areas to observe how weekend precursor emission levels influenced ambient O3 levels. The authors analyzed CO, nitric oxide (NO), and NOx ...

Mar. 8, 2006

By Air & Waste Management Association (A&WMA)

Field Method Comparison between Passive Air Samplers and Continuous Monitors for VOCs and NO2 in El Paso, Texas

This study evaluates the performance of Model 3300 Ogawa Passive Nitrogen Dioxide (NO2) Samplers and 3M 3520 Organic Vapor Monitors (OVMs) by comparing integrated passive sampling concentrations to averaged hourly NO2 and volatile organic compound (VOC) measurements at two sites in El Paso, TX. Sampling periods were three time intervals (3-day weekend, 4-day weekday, and 7-day weekly) for three ...

Mar. 1, 2004

By Ogawa & Company, USA, Inc.

Evaluation of Spatial and Temporal Variability in VOC Concentrations at Vapor Intrusion Investigation Sites

ABSTRACT As vapor intrusion has become an increasing concern at corrective action sites, the USEPA and a number of state regulatory agencies have recently issued guidance documents covering the collection of subsurface gas, and above-ground air samples during vapor intrusion investigations. Most of these guidance documents do not provide specific recommendations concerning the number of each ...

Sep. 26, 2007

Superior voc protection for project situated on former railroad site case study

Project: Smith Performing Arts Center Location: Las Vegas, NV Products: Liquid Boot Gas Vapor Mitigation System, GeoVent™ Gas Venting System, Ultraseal Waterproofing System Background: Vapor intrusion has become a significant environmental issue for regulators, industry leaders, and concerned residents nationwide. The ...

Feb. 15, 2013

By CETCO

Pneumatic Focusing Gas Chromatography: A 3-in-1 Continuous, Automated, Ambient-Fence line-Fugitive Emissions Instrument

This project involved design improvements in both software and hardware, and commercialization of our Pneumatic Focusing Gas Chromatography technology for continuous monitoring of VOCs and Air Toxics and demonstration of its performance in year-long monitoring programs at an EPA Superfund site in Fargo North Dakota and an Oregon Department of Environmental Quality Air Toxics site in Portland ...

Feb. 24, 2010

By VOC Technologies

Characterisation of ambient benzene, toluene, ethylbenzene and m-, p- and o-xylene in an urban traffic area in Bangkok, Thailand

Ambient Volatile Organic Compounds (VOCs) were examined in a heavy traffic urban area in Bangkok, Thailand, on focusing monoaromatic compounds of benzene, toluene, ethylbenzene, m-, p- and o-xylene (BTEX). Passive samplers were used to measure ambient BTEX concentrations in the environment close to very congested roads. Prior to the measurement, the validity of passive sampler performance was ...

Dec. 9, 2008

By Inderscience Publishers

Air Emissions/Off-Gas Treatment

A number of technologies have been widely applied for removal of VOCs from off-gas streams. However, the application of these technologies to off-gases from site remediation may be quite limited. Biofiltration has been widely applied for VOC destruction in Europe and Japan, but it has only recently been used in the United States. Catalytic and thermal oxidation are widely used for the destruction ...

Jan. 1, 1997

By Federal Remediation Technologies Roundtable

A healthier air supply

A recent study carried out at an IVF Lab in the US has shown that Steril-Aire’s UVC Emitters™ used in HVAC systems can play a critical role in improving clinical outcomes Aseven and a half-year study conducted in the in vitro fertilisation cleanroom laboratory of the Lehigh Valley Hospital and Health Network in the US found that the use of ultraviolet C or “UVC” lights ...

Mar. 20, 2012

Urban Air Quality Management

' Poor air quality due to pollution is a serious environmental problem in most urban areas. The greatest burden of pollution is on human health. Urban air quality management requires an integrated approach that (i) identifies the most serious problems and measures that offer cost-effective and feasible solutions across a range of economic sectors and pollution sources including industries, ...

Jan. 1, 1997

By The World Bank

Air as Clean as the Driven Snow

While California is the most populated state in the nation, it is also home to some of America’s most natural and pristine wilderness and recreation areas. One such venue is the Snow Summit Ski Resort in Big Bear Lake. Situated just over two hours from Los Angeles, Snow Summit is a fullservice winter resort that opened in 1952 and operates an average of 142 days a year. ...

Feb. 1, 2006

By Johnson Matthey Emission Control Technologies

Air Monitoring for the Gulf Oil Spill

Ambient air monitoring is a priority in the ongoing efforts to contain and manage the oil spill from the Deepwater Horizon in the Gulf of Mexico. The following provides information about the kinds of airborne contaminants that are currently being monitored in the Gulf, how they are collected and how they are analyzed. For a given project, a suitable sampling plan – developed by ...

Aug. 9, 2010

Air pollution in Europe 1990-2004

Overall picture This report analyses and presents changes in air pollutant emissions and their possible health or ecosystem impacts in Europe covering the period 1990–2004. Emissions of all air pollutants fell substantially during the period 1990–2004 in the 32 EEA member countries (EEA-32), resulting in improved air quality over the region. However, ambient concentrations of particulate ...

Nov. 13, 2007

By European Environment Agency (EEA)

News on Air 2013: Special Edition for Petrochemical Industry

This volume features Air Monitoring products that are used the petrochemical industry to ensure worker and community safety. Supelco's air monitoring products are useful for sampling of indoor (workplace) air and ambient air for a wide variety of analytes, such as aldehydes, volatile organic chemicals (VOC), benzene, toluene, ethyl benzene and xylene (BTEX) and other polyaromatic compounds ...

Feb. 13, 2014

By MilliporeSigma

National Air Pollutant Emission Trends, 1900-1998

Executive Summary What information is presented in this report? This report presents the United States (U.S.) Environmental Protection Agency’s (EPA) latest estimates of national emissions for criteria air pollutants: carbon monoxide (CO), nitrogen oxides (NOX ), volatile organic compounds (VOC), sulfur dioxide (SO2 ), particulate matter (PM) less than 10 ...

Mar. 1, 2000

By US EPA - Environmental Protection Agency

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