indoor environmental Articles

  • Indoor environment quality: a new challenge for environmental education

    Presently, most people are aware that pollution of the external air (atmospheric pollution) is prejudicial to health, but few know that the indoor environment can also have highly noxious effects in human beings. In certain cases indoor pollution even can reach levels higher than about ten times that of external pollution. All over the world there are more and more frequent unpleasant ...


    By Inderscience Publishers

  • 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.

  • Common Indoor Air Pollutants

    Is the indoor air you breathe healthy? According to the World Health Organization, 40% of all buildings pose a serious health hazard due to indoor air pollution. The EPA calls indoor air pollution the #1 pollution problem inAmerica. The following is a list of common indoor air pollutants: Dust, Pollen, and Other Allergens Chemical Fumes and Vapors Mold and Fungus Toxic ...

  • 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 ...


    By Inderscience Publishers

  • 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

  • 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 ...


    By Hygieneering, Inc.

  • Dealing with Indoor Air Quality Issues

     According to the Environmental Protection Agency (EPA) journal, the average American spends about ninety percent of their time indoors. This is why the chances are overwhelming that most of the air you breathe either has entered via your building's ventilation system... or filtered in through doors, windows, or porous wall materials. Along the way, the air might have picked up any number ...


  • Mold Remediation Guidance For Indoor Environment

    Remediation contractors are generally very conscientious, trying hard to bring each project to a condition where it will pass “clearance  testing” (the  Post-Remediation  Verification  [PRV] inspection) on the first try. Sometimes the cleaning attempts are unsuccessful. This will certainly cost the contractor additional cleaning ...

  • 10 Commandments 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”.    PPM Technology and our partners Hinds International have ...


    By PPM Technology

  • 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.

  • 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 ...


    By PPM Technology

  • Why monitor 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”. In order to accurately understand a building’s indoor air quality, it is ...


    By PPM Technology

  • The Measurement and Prediction of Conditions within Indoor Microenvironments

    Biocontaminants, such as dust mites and microfungi, can live in building habitats with a spatial scale of only a few millimetres. With the recent development of very small size microchip-based sensors, it is now practicable to measure the humidity at different locations within these microenvironments. In the laboratory study described here, sensors were used to measure the conditions in a number ...


    By SAGE Publications

  • Six Ways to Improve Indoor Air Quality Now

    Air quality is an important issue to anyone’s health, and many people don’t realize that their health issues and illnesses could be significantly diminished if their air quality was improved. There is much scientific evidence to suggest that the indoor air can be more polluted than the air outdoors, even in industrialized areas. When people spend eight or more hours a day in the same building, ...

  • 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 ...

  • Indoor air quality and mold case study

    Service(s) performed: Indoor air quality and mold management services Summary: EFI Global has provided indoor air quality and asbestos abatement services to numerous school districts and universities nationwide. At a public educational system with 7 campuses totaling over 5 million square feet, our environmental professionals performed comprehensive indoor ...


    By EFI Global, Inc.

  • Validity and reliability testing of a post–occupancy evaluation questionnaire on indoor environmental quality and occupants' satisfaction

    A post–occupancy evaluation (POE) conceptual framework and questionnaire were developed and tested for occupant satisfaction in sustainable buildings. The purpose of this study was to test the POE questionnaire for validity and reliability and report the test results as well as those of a confirmatory case study analysis. An online, self–administered questionnaire was completed by 218 occupants ...


    By Inderscience Publishers

  • Evaluation of Respiratory Symptoms and Their Possible Association with Residential Indoor Bioaerosol Concentrations and Other Environmental Influences

    The study discussed here evaluated the presence of self-reported respiratory symptoms and their association with indoor bioaerosol concentrations over a year-long study in the El Paso, Texas, region. The authors collected air samples from homes to assess seasonal differences in bacterial and fungal bioaerosol concentrations. They distributed a health questionnaire to the participating homeowner ...

  • Relationship between indoor environmental quality and building envelopes covered by plants: a review of the literature

    It is not clear whether the benefits of improving outdoor environmental conditions inherent in urban plants apply to building indoor environment when plants are integrated on building envelopes. This paper reviews published research to date to clarify whether building envelopes covered by plants have effects on indoor environmental quality, and building occupants' health and comfort. The review ...


    By Inderscience Publishers

  • Canarina DISPER software · odor in the indoor environment · commands 7

    In the Status bar at the bottom, we have X,Y and Z coordinate values in meters and data on our environmental system. Point the mouse where you want in the program window and the X,Y and Z values will be shown in the status bar at the bottom. If you select XY-Plane, a grid appears.   On the left bottom corner, two different text boxes appear: The position of the XY-plane with respect to the ...

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