تقييم نوعية و كمية الغبار العالق ودوره في تلوث هواء المدن الصحراوية : دراسة تطبيقية

الملخص EN

The present study aims to determin southern of Libya (Sabha City) particles stuck where increasing the seriousness of such particles if they contain heavy metals and chemicals that are easily absorbed or dy fluids, vital, such as particle diameter of inhaled and thus enter the tissues and bomm = 1000 micrometers).

Where the less than 1 micrometer and is the most harm (1 estimation of airborne dust in the atmosphere of the city during the summer and winter ,after dividing the city into five sectors , a sector north – the southern sector – the eastern sector – the western sector – the sector central and was in the summer, respectively,0.5, 0.3, 0.6, 0.6,0.5.

However, during the winter rates were respectively 0.3, 0.2, 0.4, 0.3, 0.3 kg / m 2 to study the nature and the virtual particles showed that there is a difference between the form of molecules in the summer and winter from the pool area and particle number and size.

Measure the diameter of the smallest particles in the winter were between (0.01 - 2) microns, but in the summer were between (0.001 - 2) microns.

As for diameter, the biggest particles in the Chapter winter were between (3-8) microns, either in the summer was between (5-20) microns.

Results of chemical analysis that all the samples tested from these samples have contained different concentrations of the heavy elements that were uncovered (Iron - Nickel - lead-zinc - Chromium - Cadmium - Copper - Cobalt) and the rates generally reached in the summer 2.1292, 0.0266, 0.3132, 0.285, 0.1542, 0.0994, 0.0525, and 0.0418 ppm, either in the winter were concentrations 0.6296, 0.021, 0.242, 0.1456, 0.0624, 0.0292, nd, 0.0334 ppm respectively.