Publications by authors named "Mohammed Ahmad S Al-Shamsi"
Article Synopsis
- Mangroves play a crucial role in mitigating and adapting to climate change but are at risk from pollutants like polycyclic aromatic hydrocarbons (PAHs).
- In a study conducted in August 2013, mangrove seawater and sediment samples from two areas along the Red Sea Coast were analyzed, revealing higher PAH concentrations in sediments from Sharam but higher levels in seawater from Alkhor.
- Dominant PAH components included phenanthrene and pyrene, with different patterns of aromatic ring abundance observed in seawater and sediment, indicating varying sources of pollution—petrogenic for sediments and pyrogenic for seawater.
The gas emissions generated from fires could cause mortalities and diseases in firefighters. Gas emissions from fire contain a mixture of a wide range of organic and inorganic gases, depending on several elements that are not currently known. In this study, firefighters were equipped with portable gas detectors to measure selected organic and inorganic gases in 26 emergency fire incidents.
View Article and Find Full Text PDFUrban street dust was collected from 22 locations in Riyadh, Saudi Arabia, and nine metals (Pb, Cr, Zn, Co, Cu, Al, Fe, Mn, and Ni) were investigated. The concentrations of these metals were employed in several common contamination evaluation indices to examine the contamination and the health risk caused by metals. Evaluation of these indices showed that they had variable degrees of contamination sensitivity.
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- The study examines how urban structures and land use patterns influence metal contamination in two different metropolitan cities: Jeddah, characterized as a corridor city, and Madinah, a compact city.
- Findings reveal that in Madinah, metal concentrations increase towards the city center due to limited activities, while in Jeddah, contamination levels are higher near industrial sites like oil refineries and seaports, indicating a scattered distribution pattern.
- Although both cities show no significant cancer risks from metal exposure, chromium (Cr) poses the highest non-carcinogenic health risk, contributing more than 24% to the overall risk in both locations.
New scientific discoveries for new applications of materials (e.g., metals) lead to extensive industrial use of these materials, which in turn, has significant negative health and environmental impacts.
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