air analysis Articles
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A simple and fast micromethod for the analysis of polychlorinated biphenyls in air by sorbent enrichment and ultrasound-assisted solvent extraction
Abstract A combination of sorbent enrichment and ultrasound-assisted solvent extraction has been used to determine polychlorinated biphenyls in air. Analytes were sampled by pumping a known volume of air through a porous polymer (Tenax TA). The enriched adsorbent was transferred into a glass vial, and ultrasound-assisted extraction of the analytes was then performed in n-hexane. ...
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Site: Residential neighborhoods, Phoenix AZ - Case study
Date Conducted: March 2012 to December 2013 (project in progress) Client: Arizona DEQ Oversite Agency: Arizona DEQ Project Description: Vapor intrusion assessment of over 100 residential units located over a PCE groundwater plume. Hartman providing work scope, overseeing soil gas sampling program to define groundwater contamination, conducting on-site indoor air analysis, overseeing indoor air ...
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Site: Commercial building & surrounding neighborhood, Indianapolis, IN - Case study
Date Conducted: June 2013 to January 2014 Client: EcoInnovators Oversite Agency: Indiana DEM Project Description: Vapor intrusion assessment of an existing commercial building and surrounding residential neighborhood. Contaminant of concern: PCE. Hartman wrote investigation work scope, oversaw soil gas sampling program to define PCE vadose zone contamination, conducted on-site indoor air ...
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Polyurethane Foam as an Effective Adsorbent for Pesticides in Air (GC Analysis)
Polyurethane foam (PUF) is a lightweight, easy-to-use material for sampling pesticides in air. Low back pressure allows sampling times and representative samples. A PUF filter cartridge designed to attach to the front of an ORBO-1000 PUF sampling cartridge traps aerosols and particulate matter, is easily and conveniently assembled, and can be removed from the ORBO-1000 cartridge and capped ...
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Application of an Enzyme-Linked Immunosorbent Assay for the Analysis of Paraquat in Human-Exposure Samples
Paraquat is a toxic quaternary ammonium compound used as an herbicide around the world. Easy, fast, and inexpensive but sensitive methods are needed to study the effects of long-term, low-level exposure of paraquat on human health. An enzyme-linked immunosorbent assay (ELISA) was used for quantification of paraquat in urine and air-filter samples collected in a human-exposure study among farm ...
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Using PID for Benzene detection
Rather than having to rely on human senses in a workplace setting it is advisable to use an appropriate form of quantitative monitoring; indeed the onus is on the employer to do the risk assessment. Remembering the old adage attributed to Lord Kelvin that you can’t manage what you don’t measure, there are methods published by the Health and Safety Executive in the UK and NIOSH in ...
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An Introduction to the Different Types of Air Sampling Techniques
Monitoring air quality is both an essential part of health and safety and for ensuring a pleasant workplace environment. For example, in breweries or dry food storage areas, where carbon dioxide is produced as part of the fermentation process, monitoring gas levels is key for protecting workers’ health.1 Even in office buildings, where chemical processing may not be a risk, monitoring ...
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Asbestos in Dusts Can Pose Health and Safety Issues for Building Occupants
Asbestos was used heavily in many building materials in the United States up until the mid-1980s. According to the U.S. Environmental Protection Agency (EPA), “Asbestos fibers may be released into the air by the disturbance of asbestos-containing material during product use, demolition work, building or home maintenance, repair, and remodeling.” The EPA goes on to report, ...
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The Role of Gas Detection in Offshore Applications
Off-shore drilling is a highly hazardous process with dangers of complexes equipment, harsh environments, severe weather as well as toxic gases and volatile organic compounds (VOCs) which can be found mixed in with the products being extracted. Toxic gas emissions are a danger in the environments in which offshore applications are found, creating unsafe conditions for personnel. This results in ...
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Selecting the Right Air Quality Monitor
There are many types of air quality monitors available, but which one is the best choice for measuring gaseous air pollutant concentrations? There are two classes of such air quality monitors: sampling monitors and in-situ monitors (“in-situ” = “in the original position”). Sampling monitors utilises a manifold through which the air to be analysed is pumped. A small air ...
By OPSIS AB
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How Can TO-15 Help You Solve Your Next IAQ Problem?
Untitled Document Have you ever been asked to investigate unpleasant odors in a home or at the workplace? Are occupants developing headaches or a feeling of nausea? It may be prudent for you to include a general volatile organic compound (VOC) scan in your sampling strategy. The best way to sample the widest range of compounds with the greatest of ease is TO-15. VOCs ...
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Offshore Applications - The Role of Gas Detection
Off-shore drilling is a highly hazardous process with dangers from complex equipment and harsh environments. Severe weather as well as toxic gases, including volatile organic compounds (VOCs) are all present during the extraction process. Toxic gas emissions are a danger in the environments in which offshore applications are found. They create unsafe conditions for personnel from a poisoning and ...
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Hard to Find Configurations Part 2
Welcome back to the continuation on the “Hard To Find Filters”. Part 2 In the last post I covered the first 2 points of the ideal filer. In this post I will detail points 3, 4 and 5 Point 3 … be pure, down to nanograms, of the substance that you are measuring. Ideally, the filter used to capture particles in air or liquid for analysis, should contain zero of the substance ...
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Case study - Crafting your oxidizer maintenance plan
OXIDIZER SERVICE SERIES: PART 2 Many will come to this article hoping for a one-size-fits-all checklist for maintaining an oxidizer system. As a company that offers service on any oxidizer regardless of style or original manufacturer, we at Anguil have long wanted the same. A set recipe for success would certainly make life easier. For those in need of a quick answer or a starting point from ...
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Air emissions impact measurements at a perchloroethene remediation site
As part of an U.S. EPA time critical removal action, an air monitoring system was established to measure real-time impacts of perchloroethene (PCE) on the surrounding areas. The soils and groundwater beneath the site (located in West Fargo, North Dakota) were treated using in situ heating of soil and groundwater, with the produced vapors collected using conventional vapor extraction. In order ...
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Site: Clocktowers Site, Lancaster PA - Case study
Date Conducted: March 2011 to July 2012 Client: General Dynamics OTS Oversite Agency: PA-DEP & EPA Region 3 Project Description: Vapor intrusion assessment of TCE to existing school and residential units located on a former watch manufacturing facility property. Hartman providing work scope, conducted soil gas, sub-slab soil gas, and indoor air sampling programs, on-site analysis by Method ...
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Roaming analysis of the air quality in Paris using Ecombox - Case Study
AirParif partnered with ECOMESURE on data acquisition on a mobile measurement campaign. 4 analyzers were placed into a car (2 TSI Dustraks and 2 42i) in Paris. Two of them were sampling the air from outside the car and two of them the air from inside. The aim of this study was to characterize the efficiency of the car air filters. All data were synchronized (GPS and pollution measurements) ...
By Ecomesure
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News on Air 2013, Volume 3: Products for Analysis and Quantification
Welcome to the third volume of our News On Air bulletin. This edition focuses on the often overlooked and neglected, but one of the most crucial steps in the analytical workflow: selecting the correct reagents and analytical reference materials for your application. In this edition, you can get tools to help you select applications for air sampling; find air and emmissions proficiency testing ...
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Sampling Air-Suspended Particulate Contaminants from Disk Drives
Our MPS-3 Microanalysis Particle Samplers have helped many engineers collect samples from computer disk drives for microanalysis and solve contamination problems. The MPS-3 Microanalysis Particle Sampler is an invaluable tool for the engineer to collect air-suspended particle samples from a disk drive for analysis. It is especially designed to make it easy for conducting analysis using advanced ...
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Passive vs Active Sampling for Sensor-based Ambient Air Quality Monitoring
Air pollution with its cascading effects across the population has become a serious matter of concern. To address this air pollution problem, availability of accurate and reliable air quality data is crucial. The quality of air monitoring depends upon how the sample of air is collected and how it is analysed. This paper majorly focuses on passive vs active sampling for air quality monitoring. ...
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