air pollutants from iron and steel making operations have historically been an environmental concern. the factory located at ahwaz, iran, has two production lines namely, 630 and 650, which produce iron parallel edge. the objective of the study is to determine indoor respiratory particulate matter (rpm) and feo concentrations and their comparison with niosh standards. this is a cross–sectiona...

soil samples were collected from seven sites in and around the metropolitan area of mexicocity. the locations were chosen as possible sources of fugitive dusts which contribute to suspended particulate matter in the atmosphere of mexico city. x-ray fluorescence (xrf) was used to determine the concentrations of several major elements (si, k, ca, ti, mn, and fe), as well as of other trace element...

Readers will be introduced to the most common sampling and analytical techniques that are being used indoors for air quality monitoring though simultaneous determination of several pollutants (i.e., inorganic organic gaseous contaminants airborne particulate matter) possible challenges encountered by implementing them. Thus, i) personal exposure equipment; (ii) portable multipollutant monitors;...

Polycyclic aromatic hydrocarbons (PAHS) have been determined in the atmosphere of Isfahan, Iran. Airborne particulate matter was sampled using a high-volume air sampler at roof-top level (~6m). Extraction of PAHS from airborne particulate matter has been performed using SFE system and the relationship between the extraction temperature and the recovery of PAHS</su...

There is evidence to suggest that airborne droplets play an important role in the transmission of respiratory diseases. The highest risk exposure these pathogens indoor environments, where airflow control has been recognized as one most effective engineering means combat its spread. However, this can contribute a significant increase energy costs, conventional ventilation often not designed rem...

Building occupants, including cleaning personnel, are exposed to a wide variety of airborne chemicals when cleaning agents and air fresheners are used in buildings. Certain of these chemicals are listed by the state of California as toxic air contaminants (TACs) and a subset of these are regulated by the US federal government as hazardous air pollutants (HAPs). California’s Proposition 65 list ...

Charcoal is a fuelwood commonly used for domestic purposes on the household scale in Africa and Southeast Asia. Earnings from charcoal production contribute to income of local inhabitants rural areas. Unfortunately, airborne emissions traditional charcoal-making process affect both human health ambient environment. A series studies were performed at village Vietnamese Mekong Delta (VMD) assess:...

Air flow in ducts is one of the basic processes ventilation and air conditioning. Knowledge this phenomenon laws according to it indispensable for drawing up sizing calculations duct networks, determining energy needed move as well aerodynamic parameters related ducts. Industrial buildings include large spaces with various sources releases harmful substances. Type these their location depends o...