Document Details
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Document Type |
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Article In Journal |
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Document Title |
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Indoor air quality during renovation actions: A case study نوعية الهواء الداخلي أثناء عمليات الترميم : دراسة حالة |
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Document Language |
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English |
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Abstract |
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Abstract
A temporary renovation activity releases considerably high concentrations of particulate matter, viable and non-viable, into air. These pollutants are a potential contributor to unacceptable indoor air quality (IAQ). Particulate matter and its constituents, lead, sulfate; nitrate, chloride, ammonium and fungi as well as fungal spores in air were evaluated in a building during renovation action. Suspended dust was recorded at mean value of 6.1 mgm-3, which exceeded the Egyptian limit values for indoor air (0.15 mgm-3) and occupational environments (5 mgm-3). The highest particle frequency (23%) of aerodynamic diameter (dae) was 1.7 mm. Particulate sulfate (SO42-), nitrate (NO3-), chloride (Cl-), ammonium (NH4+) and lead components of suspended dust averaged 2960, 28, 1350, 100 and 13.3 mg m-3, respectively. Viable fungi associated with suspended dust and that in air averaged 1.11x106 colony forming unit per gram (CFU g-1) and 92 colony forming unit per plate per hour (CFU p1- h-1), respectively. Cladosporium (33%), Aspergillus (25.6%), Alternaria (11.2%) and Penicillium (6.6%) were the most common fungal genera in the air, whereas Aspergillus (56.8%), Penicillium (10.3%) and Eurotium (10.3%) were the most common fungal genera associated with suspended dust. The detection of Aureobasidium, Epicoccum, Exophila, Paecilomyces, Scopularopsis, Ulocladium and Trichoderma is an indication of moisture-damaged building materials. Alternaria, Aureobasidium, Cladosporium, Scopularopsis and Nigrospora have dae > 5 µm whereas, Aspergillus, Penicillium and Verticillium have dae < 5 µm which are suited to penetrate deeply into lungs. Particulate matter from the working area infiltrates the occupied zones if precuationary measures are inadequate. This may cause deterioration of IAQ, discomfort and acute health problems. Renovation should be carefully designed and managed, in order to minimize degradation of the indoor and outdoor air quality. |
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ISSN |
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740 |
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Journal Name |
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Journal of Environmental Monitoring |
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Volume |
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6 |
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Issue Number |
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1 |
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Publishing Year |
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1425 AH
2004 AD |
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Article Type |
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Article |
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Added Date |
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Monday, August 29, 2011 |
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Researchers
| ممدوح إبراهيم خضير | Khoder, Mamdouh Ibraheim | Investigator | Doctorate | Khoder_55@yahoo.com |
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