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۱Effect of Dust Level Towards Working Comfort among Employees in Train Depot
نویسنده(ها): ، ، ،
اطلاعات انتشار: World Applied Sciences Journal، بيست و نهم،شماره۸، ۲۰۱۴، سال
تعداد صفحات: ۶
A research was conducted at a locomotive depot from the month of August 2009 until April 2010. The air quality was measured at seven sampling stations using HVS and analyzed using the NMAM 7300, HACH DR 2800 method. The level of comfort among 64 workers was determined by issuing some questionnaire forms. The air pollutants that studied were heavy metals, cation and anion. Results from the research showed that the highest content of heavy metals was arsenic with an average concentration of 2.152±0.352 g\m3, followed by plumbum with 1.127±0.138 μg\m3 and cadmium with 0.371±0.467 μg\m3. Heavy metals has been produced from the released smoke from motor vehicles and most of them exist in lubricating oil. Whereas for the cations parameter, Ca2+ ion recorded the highest average concentration 51.119±29.154 μg\m3 followed by Al3+ ion (18.104±23.183 μg\m3), K+ ion (10.316±2.316 μg\m3) and Mg2+ion (2.969± 0.446 μg\m3). The highest composition of anion is NO3 ion with an average concentration of 0.068±0.006 μg\m followed by SO4 ion – 3 2– (0.058±0.004 μg\m3). Cations and anions are produced due to the fact that these elements reside abundant in the earth’s crust and are polluted as a result of the exposure to the air of the outer surface. The highest average concentration of the total suspended particles was 0.694 ± 0.953 μg\m3 whereby this value did not exceed the permissible exposure limit. Overall, the parameters are all below the permissible exposure limit and the questionnaire showed that as much as 56.25% of the workers stated they were comfortable. As a conclusion, the condition of the working environment that was unpolluted with dust provided comfort or convenience of working.
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