Shamzani Affendy Mohd Din

Mass Concentration of Airborne Particulates in Selected Museums at Kuala Lumpur and Perak Darul Ridzuan

Indoor pollutants gives harmful effects to human health and became the main cause of the cultural heritage deterioration. The research focuses on the airborne particulates at the indoor of the museum galleries. Equipment used to sample inhalable dust was the 7-hole sampler and the Cyclone sampler for sample respirable dust. The results show that mass concentrations at selected location were exceeding the limit of safety Indoor Air Quality (IAQ) and Malaysia standard limit for TSP and PM10 in 8 hours sampling. Thus, it is important to control the level of contaminants within the buildings for safety purposes. Keywords : Air Pollution ; Airborne Particulates ; Indoor ; Human Health ; Cultural Heritage. eISSN 2514-751X

Inhalable and Respirable Dust Metal Concentration in Existing and Construction Stage of Airport Infrastructure

With the explosion due to shipment of Lithium-ion battery that causes the loss of MH370 issue raised in 2015, the aviation stakeholders begin to pay attention towards the metal compound to exist in and surrounding the flights and airport. This research supports this issue by critically analyzed the metal concentration found at the existing international airport and the construction of the nearby international airport, hence suggesting comprehensive result towards the fundamental knowledge to this giant intelligent infrastructure. The personal airborne particles sampling were done between two classification size of airborne particles that were respirable and inhalable dust. The metal content tested by using the ICPMS was done to determine the amount of concentration of Ba, Cr,Cu, Fe, Mn, Ni, Pb, V and Zn. Comparison between two types of built environment for an airport infrastructure is found through this analysis. This study also further showed that metals concentration level varies between the respirable and inhalable dust. The mean ranges of respirable dust found in the airport and its construction site are between 0.0575 and 72.413 mg mg−3. Lower ranges in inhalable dust are found between 0.048 and 55.190 mg m−3. Thus, sum up to an overall average for all metal concentrations at 36.235 and 27.619 mg m−3, for respirable and inhalable dust, accordingly. The dominant metals for all sampling locations in airports are Fe, Zn, and Ni. The highest is iron for both inhalable dust and respirable dust at average readings of 72.413 and 55.190 mg m−3, correspondingly. Hence, suggesting the amount of respirable to inhalable dust are exceed at 13.49 per cent. Thus, amount to the ratio of respirable towards inhalable dust at 56.74 per cent. These results indicate that as the above chemical content reaching alveolar region, it brings hazard to the human health. It is to be highlighted that the average ratio of respirable towards inhalable dust for existing building in operations are slightly higher than the fraction found at the construction site of an airport at 0.16 per cent. Thus, indicating that human presence influenced more towards the respirable dust dissemination in an environment.

Influence of Coal-Fired Power Plant Combustions Toward Neighbourhood Residents

Generally, human spend about 30–90% of their daily time indoor. Therefore, permanent and temporary residential area located surrounding the coal-fired power plant should be the today’s major concern. This is for the escalate uncontrol number of the coal-fired power plant and urbanisation with numbers of residential area surrounding its location that can provide high health risk towards its occupiers. The inhalable and respirable dust sample are collected at three residential with the radius of 5 km, 15 km, and 20 km to the coal-fired power plant.This sample are then digested and analysed with the high sensitive ICPMS (Nexion 300×) on the concentrations of Ba, Cr, Cu, Fe, Mn, Ni, Pb, V, and Zn in both respirable and inhalable particles Results shows that 50.55% of respirable dust towards inhalable dust at outdoor and 52.94% for indoor samples collected at residential area 20 km to point-source. Thus, suggesting that indoor air quality in Sitiawan occupied higher risk for human health rather than the outdoor atmospheric ambient. At the residential area of 15 km to point-source, the indoor ratio of respirable towards inhalable dust are higher than the outdoor ambient. In comparison between outdoor ratios, it can be found that the ratio is decreasing at outdoor ambient as the distance increase from the coal-fired power plant. The mean ranges of respirable dust found collected at a residential nearby coal-fired power plant in Manjung are between 0.0345 and 84.128 mg m−3. Higher ranges are found average in the inhalable dust at 0.0483 and 81.890 mg m−3. Thus, sum up to an overall average for all metal concentrations at 42.081 and 40.969 mg m−3, for respirable and inhalable dust, accordingly. The dominant metals for all sampling locations in residentials are Fe, Zn, and Ni. The highest is Fe for both inhalable dust and respirable dust at 82.506 and 139.900 mg m−3, correspondingly. Hence, suggesting the amount of ratio respirable towards inhalable dust at 50.67%.