Fig 1.
Air dust sampling locations.
Table 1.
Parameter meaning and value of daily dose model of heavy metals in urban surface dusts.
Fig 2.
Levels of Enrichment Factors of (a) Copper (b) Manganese (c) Nickel (d) Zinc and (e) Lead in dust samples.
Fig 3.
(a) Particle size distribution by volume (b) mass distribution of different size fractions of aerosol PM in the study area.
Fig 4.
Average daily dose exposure via ingestion in (a) less than 6 years children (b) 6 to 12 years (c) more than 12 years, Average daily dose exposure via dermal in (d) less than 6 years children (e) 6 to 12 years (f) more than 12 years.
Table 2.
Exposure dose, hazard quotient for each element and exposure pathway.
Fig 5.
(a) Geological Accumulation Index and (b) Integrated Pollution Index of collected air dust samples in Riyadh City.