CEJOEM 1999 5(2):173-180
ABSTRACT: Street dust collected from three different
sites in greater Cairo was examined for microbial (bacteria, mold and actinomycetes)
and chemical contents (S042,–,
Cl– and NO2–) of dust £45 mm in size. Lead
contents of the collected samples were determined using atomic absorption
spectrophotometry (AAS). The maximum level of lead was detected at the
city Center site (588mg/g). The major source of lead in street dust was
automobile emission. The bacteria and molds were the predominant organisms.
Most of these organisms are allergenic. The results also show that the
chemical compounds influenced the survival of attached microorganisms.
The dust compounds may adsorb air pollutants and cause genetic effects.
So that the microorganisms may be modified to more pathogenic or more environmental
factor resistant.
KEY WORDS: Airborne microorganisms, airborne chemicals, street dust
| Received: 13 May 1999
Accepted: 26 July 1999 Posted: December 1999 |
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