indoor air quality measurement Articles

  • Indoor Air Quality and Gases

    Potentially hazardous gases is a critical issue in the workplace. Wireless technology provides means of monitoring and measuring toxic levels before health is at risk.   ...


    By PPM Technology

  • Indoor Air Quality

    Indoor Air Quality-Makes Me Sick EVM 7 measures it all   How often do you here ‘I need some fresh air’. Why do we say that? Maybe you simply want a break from the wife and kids or work colleagues! But it may be because the indoor air you are breathing in is contaminated. Indoor air contains significantly higher levels of contaminants than outside air.   ...


    By Shawcity Limited

  • 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 ...


    By Atlantic Environmental, Inc.

  • Comparison of indoor air quality in restaurant kitchens in Tehran with ambient air quality

    Air pollution is a major environmental health problem, affecting developed and developing countries around the world. Although the indoor air database is weak due to the scarcity of monitoring results, these estimates indicate that a serious indoor air problem may exist in developing countries. In developed countries, pollutant concentrations indoors are similar to those outdoors, with the ratio ...


    By University of Tehran

  • Double benefit of monitoring Indoor Air Quality (IAQ)

    It is a difficult balance to save money and energy yet maintain a comfortable and healthy indoor air environment. A logical solution to controlling indoor air pollution is good ventilation coupled with IAQ monitoring using gas sensors. This can ensure healthy indoor air as well as a more efficient HVAC system.  Typical IAQ investigation and examination consists of taking single-point ...


    By PPM Technology

  • Simultaneous determination of PM fractions, particle number and particle size distribution in high time resolution applying one and the same optical measurement technique

    Abstract The Fidas fine dust monitoring systems comprise an optical aerosol spectrometer, which is characterized by very good instrument characteristics, and utilize a sophisticated approach to convert the measured information on particle number and particle size into mass concentrations. As monitoring of PM requires reliable and quality-controlled performance of the measuring systems, ...


    By Palas GmbH

  • Continuous monitoring of multiple Indoor Air Quality (IAQ) parameters

    Measuring and monitoring hazardous gases is a critical issue in industrial and workplace safety.  Many facilities are especially vulnerable to the effects of an unhealthy indoor environment when fuel-burning vehicles are used indoors. Placing an IAQ monitoring system in buildings and facilities enables immediate identification of IAQ problems, the sources and causes of any problem can be ...


    By PPM Technology

  • `Green Buildings` can lead to problems with Indoor Air Quality (IAQ)

    In striving to construct energy-efficient, cost-effective buildings, the imperative issue of their indoor air quality (IAQ) is often overlooked. This can lead to an unhealthy indoor environment and to conditions such as sick building syndrome (SBS) or other building related illnesses (BRI). In the past few decades, energy conservation measures have led to airtight building construction that can ...


    By PPM Technology

  • 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, ...

  • Differential impacts of smoke-free laws on indoor air quality

    The authors assessed the impacts of two different smoke-free laws on indoor air quality. They compared the indoor air quality of 10 hospitality venues in Lexington and Louisville, Kentucky, before and after the smoke-free laws went into effect. Real-time measurements of particulate matter with aerodynamic diameter of 2.5 µm or smaller (PM2.5) were made. One Lexington establishment was excluded ...

  • How to Achieve Good Indoor Air Quality in Operating Rooms

    There are two primary objectives in achieving acceptable air quality in the operating room: (1) control of anesthetic gases for the benefit of operating room staff, and (2) infection control for the benefit of the patient. Control of Anesthetic Gases Supply and scavenging systems, as well as general ventilation in the OR, must be functioning optimally for the surgical ...


    By Atlantic Environmental, Inc.

  • 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 ...


    By SAGE Publications

  • US Regulation of Wood-burning and Indoor Air Pollution

    Recently, the US EPA released their final proposal to update the new source performance standards (NSPS) for new woodstoves and heaters, and to add NSPS for the first time for pellet stoves, furnaces, hydronic heaters, and masonry heaters.   The measures, if approved, would take effect in 2015.  The report states, "Emissions from wood stoves occur near ground level in residential ...


    By Environics, Inc.

  • Improving air quality in the office

    Most people spend the main part of their day indoors – in the home, school or office environment. Focusing specifically on improving air quality in the office and workplace setting, we are looking at the key potential sources of pollution which impact upon air quality and employees’ health. Examples include, outdoor air (particularly relevant if the workplace is next to a busy road), ...


    By Commercial Air Filtration

  • Urban indoor-outdoor aerosol measurements in Portugal and the global warming scenario

    Aerosols play a major role both in climate change and air quality. They affect climate by interfering with radiative transfer and the atmospheric temperature. Aerosol particulate matter has also been associated with various adverse health effects. Aerosol particles' number and size distributions were measured inside and outside the houses in the urban areas of Evora and Lisbon in Portugal. The ...


    By Inderscience Publishers

  • Case study of odor and indoor air quality assessment in the dewatering building at the Stickney Water Reclamation Plant

    Indoor air quality (IAQ) and odors were determined using sampling/monitoring, measurement, and modeling methods in a large dewatering building at a very large water reclamation plant. The ultimate goal was to determine control strategies to reduce the sensory impacts on the workforce and achieve odor reduction within the building. Study approaches included: (1) investigation of air mixing by ...


    By IWA Publishing

  • Biomonitoring of indoor air genotoxic properties in ten schools using Scindapsus aureus

    School is the most important indoor environment for children besides their home. Indoor air quality in school is a critical parameter that needs to be considered for children's health. Atmospheric measurements provide concentrations of pollutants which are used for risk assessments. However, those data are limited to study complex interactions between pollutants, and the genotoxic potential of ...


    By Inderscience Publishers

  • An ambient indoor air environment is vital to ensure a safe and healthy workplace

    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”. Poor IAQ is a contributing factor to both short and long-term health issues, these ...


    By PPM Technology

  • 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 ...


    By PPM Technology

  • Warehouse Optimization: Balancing Equipment Performance and Worker Safety Through Emissions Measurements and Air Quality Monitoring

    Successful warehouse functionality is dependent on both maximizing equipment performance and providing a safe and healthy environment for workers that encourages productivity. However, these two factors are often at odds with each other as warehouse equipment such as forklifts, burnishers and delivery trucks emit toxic gases that can have the potential to create poor indoor air quality which ...

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