Mamdouh I. Khoder
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View article: Atmospheric fine organic (PAHs) aerosols in Dokki urban area at Greater Cairo, Egypt: A comprehensive analysis of seasonal characterization, source apportionment and exposure implications
Atmospheric fine organic (PAHs) aerosols in Dokki urban area at Greater Cairo, Egypt: A comprehensive analysis of seasonal characterization, source apportionment and exposure implications Open
Polycyclic aromatic hydrocarbons (PAHs) can pose a severe threat to public health. This study intends to evaluate the characteristics of fine particles (FP) and FP-bound PAH, their seasonal fluctuations, origins and health risk implication…
View article: Explaining apparent particle shrinkage related to new particle formation events in western Saudi Arabia does not require evaporation
Explaining apparent particle shrinkage related to new particle formation events in western Saudi Arabia does not require evaporation Open
The majority of new particle formation (NPF) events observed in Hada Al Sham, western Saudi Arabia, during 2013–2015 showed an unusual progression where the diameter of a newly formed particle mode clearly started to decrease after the gro…
View article: Comment on egusphere-2023-333
Comment on egusphere-2023-333 Open
Abstract. The majority of new particle formation (NPF) events observed in Hada al Sham, western Saudi Arabia during 2013–2015, showed an unusual progression where the diameter of a newly formed particle mode clearly starte…
View article: Explaining apparent particle shrinkage related to new particle formation events in western Saudi Arabia does not require evaporation
Explaining apparent particle shrinkage related to new particle formation events in western Saudi Arabia does not require evaporation Open
The majority of new particle formation (NPF) events observed in Hada al Sham, western Saudi Arabia during 2013–2015, showed an unusual progression where the diameter of a newly formed particle mode clearly started to decrease after the gro…
View article: Potentially Harmful Elements Associated with Dust of Mosques: Pollution Status, Sources, and Human Health Risks
Potentially Harmful Elements Associated with Dust of Mosques: Pollution Status, Sources, and Human Health Risks Open
Potentially harmful elements (PHEs) associated with dust generated from anthropogenic sources can be transported into mosques and deposited on the filters of the air-conditioners (AC); thereby, children and adults are exposed to such PHEs …
View article: Pollution characteristics and human health risk of potentially toxic elements associated with deposited dust of sporting walkways during physical activity
Pollution characteristics and human health risk of potentially toxic elements associated with deposited dust of sporting walkways during physical activity Open
Sporting walkways are planned features designed to facilitate physical exercise in urban areas. Potentially toxic elements (PTEs) associated with deposited dust (DD) of urban sporting walkways (USWs), suburban sporting walkways (SSWs) and …
View article: Effect of restricted emissions during COVID-19 on atmospheric aerosol chemistry in a Greater Cairo suburb: Characterization and enhancement of secondary inorganic aerosol production
Effect of restricted emissions during COVID-19 on atmospheric aerosol chemistry in a Greater Cairo suburb: Characterization and enhancement of secondary inorganic aerosol production Open
View article: Classroom Dust-Bound Polycyclic Aromatic Hydrocarbons in Jeddah Primary Schools, Saudi Arabia: Level, Characteristics and Health Risk Assessment
Classroom Dust-Bound Polycyclic Aromatic Hydrocarbons in Jeddah Primary Schools, Saudi Arabia: Level, Characteristics and Health Risk Assessment Open
Data concerning polycyclic aromatic hydrocarbons (PAHs) in Jeddah’s schools, Saudi Arabia, and their implications for health risks to children, is scarce. Classroom air conditioner filter dusts were collected from primary schools in urban,…
View article: Particulate Monitoring and Evaluation of the Low-cost Sensors Performance at the Middle East
Particulate Monitoring and Evaluation of the Low-cost Sensors Performance at the Middle East Open
<p><strong>Key Words:</strong><br>Air Quality; Air Pollution Monitoring; Low-Cost Sensors; Reference Methods, Microsensors, Experimental Campaign<br> <br><strong>Abstract:</strong>&l…
View article: Risk Assessment and Implications of Schoolchildren Exposure to Classroom Heavy Metals Particles in Jeddah, Saudi Arabia
Risk Assessment and Implications of Schoolchildren Exposure to Classroom Heavy Metals Particles in Jeddah, Saudi Arabia Open
Classrooms Air Conditioner Filter (CACF) particles represent all of the exposed particles that have migrated to the interior environment. This study was conducted to assess the heavy metals contamination in CACF particles from Jeddah prima…
View article: New particle formation, growth and apparent shrinkage at a rural background site in western Saudi Arabia
New particle formation, growth and apparent shrinkage at a rural background site in western Saudi Arabia Open
Atmospheric aerosols have significant effects on human health and the climate. A large fraction of these aerosols originates from secondary new particle formation (NPF), where atmospheric vapors form small particles that subsequently grow …
View article: New particle formation, growth and shrinkage at a ruralbackground site in western Saudi Arabia
New particle formation, growth and shrinkage at a ruralbackground site in western Saudi Arabia Open
Atmospheric aerosols have significant effects on human health and the climate. A large fraction of these aerosols originates from secondary new particle formation (NPF), where atmospheric vapors form small particles that subsequently grow …
View article: A Predictive Model for Steady State Ozone Concentration at an Urban-Coastal Site
A Predictive Model for Steady State Ozone Concentration at an Urban-Coastal Site Open
Ground level ozone (O3) plays an important role in controlling the oxidation budget in the boundary layer and thus affects the environment and causes severe health disorders. Ozone gas, being one of the well-known greenhouse gases, althoug…
View article: Effect of Seasonal Variation on the Levels and Behaviours of Formaldehyde in the Atmosphere of a Suburban Area in Cairo, Egypt
Effect of Seasonal Variation on the Levels and Behaviours of Formaldehyde in the Atmosphere of a Suburban Area in Cairo, Egypt Open
Formaldehyde (HCHO) is a carcinogenic pollutant, has an active role in tropospheric photochemistry, and can be affected by seasonal variations. To our knowledge, this is the first comprehensive study of the effect of seasonal variation on …
View article: Street Dust—Bound Polycyclic Aromatic Hydrocarbons in a Saudi Coastal City: Status, Profile, Sources, and Human Health Risk Assessment
Street Dust—Bound Polycyclic Aromatic Hydrocarbons in a Saudi Coastal City: Status, Profile, Sources, and Human Health Risk Assessment Open
Polycyclic aromatic hydrocarbons (PAHs) in street dust pose a serious problem threatening both the environment and human health. Street dust samples were collected from five different land use patterns (traffic areas TRA, urban area URA, r…
View article: Street Dust - Bound Polycyclic Aromatic Hydrocarbons in Saudi Coastal City: Status, Profile, Sources, and Human Health Risk Assessment
Street Dust - Bound Polycyclic Aromatic Hydrocarbons in Saudi Coastal City: Status, Profile, Sources, and Human Health Risk Assessment Open
Polycyclic aromatic hydrocarbons (PAHs) in street dust pose a serious problem threatening both environment and human health. Street dust were collected from five different land use patterns (traffic areas TRA, urban area URA, residential a…
View article: Risk Assessment and Implication of Human Exposure to Road Dust Heavy Metals in Jeddah, Saudi Arabia
Risk Assessment and Implication of Human Exposure to Road Dust Heavy Metals in Jeddah, Saudi Arabia Open
Data dealing with the assessment of heavy metal pollution in road dusts in Jeddah, Saudi Arabia and its implication to human health risk of human exposure to heavy metals, are scarce. Road dusts were collected from five different functiona…
View article: Association between Exposure to Ambient Air Particulates and Metabolic Syndrome Components in a Saudi Arabian Population
Association between Exposure to Ambient Air Particulates and Metabolic Syndrome Components in a Saudi Arabian Population Open
Recent epidemiological evidence suggests that exposure to particulates may be a factor in the etiology of metabolic syndrome (MetS). In this novel study, we investigated the relationship between particulate levels and prevalence of MetS co…
View article: Pollution Assessment and Health Risk Implication of Human Exposure to Heavy Metals in Road Dusts from Different Functional Areas in Jeddah, Saudi Arabia
Pollution Assessment and Health Risk Implication of Human Exposure to Heavy Metals in Road Dusts from Different Functional Areas in Jeddah, Saudi Arabia Open
Data dealing with the assessment of heavy metal pollution in road dusts in Jeddah, Saudi Arabia and its implication to human health risk of human exposure to heavy metals, are scarce. Road dusts were collected from five different functiona…
View article: Aerosol optical properties at rural background area in Western Saudi Arabia
Aerosol optical properties at rural background area in Western Saudi Arabia Open
To derive the comprehensive aerosol in situ characteristics at a rural background area in Saudi Arabia, an aerosol measurements station was established to Hada Al Sham, 60 km east from the Red Sea and the city of Jeddah. The present sturdy…
View article: Temporal variations of fine and coarse particulate matter sources in Jeddah, Saudi Arabia
Temporal variations of fine and coarse particulate matter sources in Jeddah, Saudi Arabia Open
Temporal variations of fine and coarse PM mass, elemental constituents, and sources were examined in Jeddah, Saudi Arabia, for the first time. The main source of PM2.5-10 is natural windblown soil and road dust, whereas the pred…
View article: Evaluation of the Effects of Airborne Particulate Matter on Bone Marrow-Mesenchymal Stem Cells (BM-MSCs): Cellular, Molecular and Systems Biological Approaches
Evaluation of the Effects of Airborne Particulate Matter on Bone Marrow-Mesenchymal Stem Cells (BM-MSCs): Cellular, Molecular and Systems Biological Approaches Open
Particulate matter (PM) contains heavy metals that affect various cellular functions and gene expression associated with a range of acute and chronic diseases in humans. However, the specific effects they exert on the stem cells remain unc…
View article: Evaluation of the Effects of Airborne Particulate Matter on Bone Marrow-Mesenchymal Stem Cells (BM-MSCs): Cellular, Molecular and Systems Biological Approaches
Evaluation of the Effects of Airborne Particulate Matter on Bone Marrow-Mesenchymal Stem Cells (BM-MSCs): Cellular, Molecular and Systems Biological Approaches Open
Particulate matter (PM) contains heavy metals that affect various cellular functions and gene expression associated with an array of acute and chronic diseases, in humans. However, their specific effects on the stem cells remain unclear. H…
View article: Health risk associated with airborne particulate matter and its components in Jeddah, Saudi Arabia
Health risk associated with airborne particulate matter and its components in Jeddah, Saudi Arabia Open
View article: Relationship of polycyclic aromatic hydrocarbons with oxy(quinone) and nitro derivatives during air mass transport
Relationship of polycyclic aromatic hydrocarbons with oxy(quinone) and nitro derivatives during air mass transport Open
View article: Influence of petrochemical installations upon PAH concentrations at sites in Western Saudi Arabia
Influence of petrochemical installations upon PAH concentrations at sites in Western Saudi Arabia Open
View article: In Vivo Exposures to Particulate Matter Collected from Saudi Arabia or Nickel Chloride Display Similar Dysregulation of Metabolic Syndrome Genes
In Vivo Exposures to Particulate Matter Collected from Saudi Arabia or Nickel Chloride Display Similar Dysregulation of Metabolic Syndrome Genes Open
Particulate matter (PM) exposures have been linked to mortality, low birth weights, hospital admissions, and diseases associated with metabolic syndrome, including diabetes mellitus, cardiovascular disease, and obesity. In a previous in vi…
View article: Association between sleeping hours and cardiometabolic risk factors for metabolic syndrome in a Saudi Arabian population
Association between sleeping hours and cardiometabolic risk factors for metabolic syndrome in a Saudi Arabian population Open
Objectives Epidemiological and molecular studies have shown that sleep duration is associated with metabolic syndrome (MtS), a disease that is on the rise in the Kingdom of Saudi Arabia. We aim to investigate the association between sleep …
View article: Urinary metabolites of polycyclic aromatic hydrocarbons in Saudi Arabian schoolchildren in relation to sources of exposure
Urinary metabolites of polycyclic aromatic hydrocarbons in Saudi Arabian schoolchildren in relation to sources of exposure Open
View article: Effects of airborne particulate matter on alternative pre-mRNA splicing in colon cancer cells
Effects of airborne particulate matter on alternative pre-mRNA splicing in colon cancer cells Open