ASSESSMENT AND COMPARISON OF ASBESTOS FIBRE CONCENTRATIONS AND DISPERSION IN RESIDENTIAL, COMMERCIAL AND TRAFFIC AREAS IN TEHRAN

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ATABI FARIDEH; RASHIDI YOUSEF; HASSANKHANI HOSSEIN

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Journal: Environmental Sciences Year:2015 | Volume:13 | Issue:1 Page(s): 43-52

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Title

ASSESSMENT AND COMPARISON OF ASBESTOS FIBRE CONCENTRATIONS AND DISPERSION IN RESIDENTIAL, COMMERCIAL AND TRAFFIC AREAS IN TEHRAN

Author(s)

ATABI FARIDEH | RASHIDI YOUSEF | HASSANKHANI HOSSEIN | Issue Writer Certificate

Keywords

ASBESTOS FIBERSQ2

TOXINSQ1

ASBESTOS FIBRE CONCENTRATIONSQ1

MEASUREMENTQ1

Abstract

One of the most important environmental issues in Tehran is air pollution. Alongside classic pollutants, TOXINS are also challenges facing Tehran. In this work the concentration of asbestos in terms of its temporal and spatial distribution has been studied. The use of asbestos in brake and power transmission systems of vehicles and the increase in the number of cars in the city, has led the authors to measure the concentration and dispersion of asbestos fibres in recent years. Accordingly, airborne ASBESTOS FIBRE CONCENTRATIONS in the urban environment of Tehran were evaluated between September 2012 and September 2013. The airborne fibre concentrations of 200 air samples collected from 50 different sites in five areas of Tehran were analyzed with phase-contrast optical microscopy (PCM) and scanning electron microscopy (SEM). There were significant differences in the ASBESTOS FIBRE CONCENTRATIONS between areas and seasons. Since there is no global standard relating to asbestos we had to compare the results against both the World Health Organization and environmental agencystandards in the US and Europe, leading to a standard of 5×10−5 PCM f/ml. To evaluate the seasonal variations in fibre concentrations, we collected air samples at the same sites in each of the four seasons. The samples were collected on membrane filters (Millipore type AA; pore size 0.8 mm; diameter 47 mm; Millipore, Bedford, MA) using an open face filter holder (model FP050/2; Schleicher and Schull, Dassel, Germany). Sampling was performed at a flow rate of 10 l/min using a suction pump (SKC, English); sampling times ranged from 8 to 12. The highest geometric mean concentration of asbestos was found in traffic areas and in winter measuring 9×10−3 PCM f/ml. and the mean of highest sampling concentration within a year was found in traffic areas which is 45×10−3 PCM f/ml. We conclude that the high volume of traffic, industrial consumption of asbestos, and geographical and climatic conditions are responsible for the high airborne asbestos levels in non-occupational environments in Tehran.

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APA: Copy

ATABI, FARIDEH, RASHIDI, YOUSEF, & HASSANKHANI, HOSSEIN. (2015). ASSESSMENT AND COMPARISON OF ASBESTOS FIBRE CONCENTRATIONS AND DISPERSION IN RESIDENTIAL, COMMERCIAL AND TRAFFIC AREAS IN TEHRAN. ENVIRONMENTAL SCIENCES, 13(1 ), 43-52. SID. https://sid.ir/paper/117692/en

Vancouver: Copy

ATABI FARIDEH, RASHIDI YOUSEF, HASSANKHANI HOSSEIN. ASSESSMENT AND COMPARISON OF ASBESTOS FIBRE CONCENTRATIONS AND DISPERSION IN RESIDENTIAL, COMMERCIAL AND TRAFFIC AREAS IN TEHRAN. ENVIRONMENTAL SCIENCES[Internet]. 2015;13(1 ):43-52. Available from: https://sid.ir/paper/117692/en

IEEE: Copy

FARIDEH ATABI, YOUSEF RASHIDI, and HOSSEIN HASSANKHANI, “ASSESSMENT AND COMPARISON OF ASBESTOS FIBRE CONCENTRATIONS AND DISPERSION IN RESIDENTIAL, COMMERCIAL AND TRAFFIC AREAS IN TEHRAN,” ENVIRONMENTAL SCIENCES, vol. 13, no. 1 , pp. 43–52, 2015, [Online]. Available: https://sid.ir/paper/117692/en

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