Indoor Air Sampling Articles on Environmental XPRT

Indoor air quality problems

We have a number of employees in our office who have itchy, watery eyes, nasal congestion, headaches, lethargy and trouble concentrating. Most of the affected folks report they feel better at home and worse after they’ve been in the office for about an hour. We had the office tested for mold but nothing remarkable was found. What’s going on? While exposure to molds can certainly ...

Mar. 24, 2009

By Atlantic Environmental, Inc.

Indoor air quality in primary schools

The indoor air quality (IAQ) in classrooms is expected to play a key role in the assessment of the effects of the children's personal exposure to air pollution since they spend on average 7–11 h per weekday at school. A statistical treatment was conducted over a database of indoor air parameters and the primary schools where these parameters were sampled (urban area of Lisbon, Portugal). The aim ...

Dec. 28, 2012

By Inderscience Publishers

Indoor Air Quality Complaint Response

Hygieneering’s Industrial Hygiene department recently responded to Indoor Air Quality concerns by occupants in a hospital following a localized fire within their building. The response including conducting air sampling for potential contaminants associated with the fire and an evaluation of remediation efforts. Recommendations were provided to change air flow patterns to better ...

Feb. 2, 2011

By Hygieneering, Inc.

The Application of TO-15 to Naphthalene Measurements in Indoor Air

Introduction Naphthalene has recently become a compound of concern in many vapor intrusion investigations as a result of its reclassification to a carcinogen by California EPA and its proposed change to a 'likely carcinogen' by the USEPA. Naphthalene is commonly found in petroleum-based fuels and may be present at former manufactured gas plants. To assess the health risk of naphthalene vapor ...

Jan. 1, 2007

By Eurofins Air Toxics Inc

Remote monitoring of Indoor Air Quality (IAQ)

Indoor air quality (IAQ) relates to a number of environmental factors inside a building that can impinge on the health, comfort, or work performance of the building’s occupants. Monitoring IAQ is vital because it is estimated that the average person spends 90% of their time breathing “indoor air”. Remote monitoring of IAQ sampling data collected by PPM ...

Nov. 22, 2012

By PPM Technology

Proactive Indoor Air Quality Surveys Save Budgets

As facility budgets tighten, managers are realizing the many benefits that money spent for proactive indoor air quality is a smart investment. Here is a simple comparison to exemplify the point. Indoor air quality investigations conducted in response to employee complaint or illness clusters cost $3.00 to $10.00 per square foot of space investigated compared to 2 to 10 cents per square foot for a ...

Jan. 1, 2007

By 1Source Safety and Health, Inc.

General Air Sampling Guidelines (PDF)

This Standard Operating Procedure (SOP) provides guidance in developing and implementing sampling plans to assess the impact of hazardous waste sites on ambient air. It presents the United States Environmental Protection Agency/Environmental Response Team's (U.S. EPA/ERT's) approach to air sampling and monitoring and identifies equipment requirements. It is not within the scope of this SOP to ...

Jan. 1, 1994

By US EPA - Environmental Protection Agency

Building Services Management - Air Sampling -

Untitled Document Maintenance professionals are often the first responders to mold complaints in their facilities. building occupants can be exposed to fungal (mold) ...

Jan. 1, 2004

By EMSL Analytical, Inc.

Indoor Air as a Source of VOC Contamination in Shallow Soils Below Buildings

US EPA and many state regulatory agency guidance documents recommend below foundation vapor sampling as a key element of site investigations to determine if vapor migration from underlying soil into buildings is a completed exposure pathway (USEPA, 2002; WIDHFS, 2003; San Diego County, 2004; PADEP, 2004). If volatile organic compounds (VOCs) are detected below the building foundation, then VOC ...

Jan. 1, 2006

Study of the indoor air quality in hospitals in South Chennai, India — microbial profile

A 3-month pilot study (February—April 2006) was conducted to determine the quality of indoor air in hospitals in the Tamil Nadu region of India and to characterize the predominant aerobic bacteria and fungi present. The main objectives were (1) to sample the indoor air of three different hospitals in Chennai for bioaerosols to generate baseline data using the Petri plate gravitational settling ...

Oct. 1, 2008

By SAGE Publications

Vapor intrusion and indoor air quality due diligence during property transactions

Vapor intrusion (i.e. the migration of volatile chemicals from contaminated soil and/or ground water through the subsurface into overlying building structures) as a contributing indoor air has become a growing concern for property owners and prospective purchasers in recent years as it can cause significant indoor air quality problems. This is largely due to the increased focus on this issue by ...

May 18, 2009

By Environmental Waste Management Associates LLC (EWMA)

Formaldehyde and Aromatic Volatile Hydrocarbons in the Indoor Air of Egyptian Office Buildings

Indoor and outdoor measurements of formaldehyde and the aromatic hydrocarbons: benzene, toluene, ethylbenzene, m,p-xylene and o-xylene (BTEX) were conducted at six offices in a suburban area in Giza, Egypt, during the winter 2003-04 season. The mean indoor level of formaldehyde was 59.79ppb in offices where there was no smoking and 85.01ppb in offices where people smoked. The highest mean level ...

Jan. 1, 2006

By SAGE Publications

Canarina DISPER Software · indoor air quality dispersion · algorithms 8

Canarina DISPER Software · indoor air quality dispersion 9.1.3 Wind Speed Profile The wind power law is used to adjust the observed wind speed, uref, from a reference measurement height, ...

Nov. 13, 2011

By Canarina Environmental Software

Wireless monitoring for a safe indoor environment

This article discusses the benefits of wireless technology for continously monitoring the indoor environment. In striving for the construction of energy efficient and cost-effective buildings, the imperative issue of the buildings Indoor Air Quality (IAQ) is often overlooked. This can often lead to a unhealthy indoor environment and even to conditions such as Sick Building Syndrome (SBS) or other ...

Aug. 18, 2010

By PPM Technology

Feasibility Study of an Express Assessment Protocol for the Indoor Air Quality of Air-conditioned Offices

It is costly to sample all major toxic pollutants in community air. Sampling should be conducted based on an assessment strategy and monitoring planning. Assessment methods that rely on monitoring some representative pollutants have been proposed variously at different times. In Hong Kong, the Environmental Protection Department (HKEPD) launched an Indoor Air Quality (IAQ) certification scheme to ...

Jan. 1, 2006

By SAGE Publications

Area Monitoring: Diffusion Sampling

Indoor and outdoor gas hazards that exist in open areas are usually monitored using diffusion-type sensors. A diffusion sensor has no active sample-drawing system; diffusion sensors rely on the ambient air movement and pressure to deliver the sample to the sensing element. Diffusion-type sensors are a reliable and cost-effective way to monitor open area gas hazards. When installing diffusion ...

Oct. 5, 2013

By Control Instruments Corporation

Purpose of Air and Surface Mold Sampling or Testing during Assessment

As part of determining whether an indoor environment is contaminated with excessive amounts of mold and requires remediation, Indoor Environmental Technologies (IET) routinely performs air and surface mold sampling or testing. While there are many types of sampling, IET uses two of them the most: Air sampling using a “spore trap” sampler. Considerable information ...

Mar. 20, 2015

By Indoor Environmental Technologies (IET)

Assessment and Remediation of Vapor Intrusion to Indoor Air, South Mesa State Superfund Site Gilbert, Arizona

Abstract Vapor intrusion to indoor air from volatile organic compound (VOC) contamination in the subsurface is increasingly becoming a more important exposure pathway when developing site conceptual models and ultimately obtaining site closure. Until recently, this exposure pathway was not often considered during site characterization. The direct measurement of the vapor intrusion to indoor ...

May 19, 2008

By Beacon Environmental Services, Inc.

Effect of gaseous chlorine dioxide on indoor microbial contaminants

Traditional and modern techniques for bioaerosol enumeration were used to evaluate the relative efficiency of gaseous chlorine dioxide (ClO2) in reducing the indoor microbial contamination under field and laboratory conditions. The field study was performed in a highly microbially contaminated house, which had had an undetected roof leak for an extended period of time and exhibited large areas of ...

May 1, 2008

By Air & Waste Management Association (A&WMA)

Control of Aerosol Contaminants in Indoor Air: Combining the Particle Concentration Reduction with Microbial Inactivation

ABSTRACT An indoor air purification technique, which combines unipolar ion emission and photocatalytic oxidation (promoted by a specially designed RCI cell), was investigated in two test chambers, 2.75 m3 and 24.3 m3, using nonbiological and biological challenge aerosols. The reduction in particle concentration was measured size selectively in realtime, and the Air Cleaning Factor and the Clean ...

Jan. 1, 2007

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