falling on the cities of Al-Mukalla and Al-Shihr - Yemen

الملخص

The aim of this study is to determine the content of lead in fallen dust particles upon
Al-Sheher and Mukalla cities in Hadramout governerate in Yemen , from december 2003
to april 2004.The fallen dust particles were collected by plastic brush from the houses roof,
at hieght of 2-4 meters approximatlly .The amount of lead is determined using the flame
atomic absorption spectrophotometry (FAAS) method.
The results show that the concentration of lead in the fallen dust particles upon Mukalla
city varies among different city district, it was (308.6μg/g ) in Fowa district, where as
(141μg/g ) in Al-ommal district. and the range of concntration of lead for five mounth it
was (239.7μg/g ).
Also the content of lead in the fallen dust particles upon Al-sheher city varies among
different city district, it was (173μg/g ) in AL- seda district, whereas in Al-mahthar
district it was (51) μg/g) , and the range of concntration of lead for five mounth it was
(118μg/g ).
The low overall average content of lead in the fallen dust particlesas compared with
other Araband forgen conutries can be attributed to the geographical location of the
conutries .population and traffic density,and their economical situations and activities.