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INORGANIC CHEMISTRY, GRANULOMETRY AND MINERALOGICAL CHARACTERISTICS OF THE DUST FALL OVER PHOSPHATE MINE ADJACENT AREA, CENTRAL JORDAN

AUTHOR/S: H. HAMAIEDH, T. EL-HASAN
Sunday 1 August 2010 by Libadmin2009

9th International Multidisciplinary Scientific GeoConference - SGEM2009, www.sgem.org, SGEM2009 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 14-19, 2009, Vol. 2, 335-342 pp

ABSTRACT

Eight selected heavy and trace elements (Fe, Zn, Pb, Cu, Cr, Cd, Ni & P) were analyzed in the dust fall
samples collected from the surrounding areas adjacent to Al-Hisa phosphate mine central Jordan
during summer 2008. The chemical analysis was done using the ICP-MS, after being digested with
(HNO3/HCl) acid mixture. Beside the identification of their mineral constituents using the XRD.
Moreover, the particle size determination on volume percentage basis for four fractions (PM

<2.5,>

100) was carried out. The PM10– PM100 were found to be the most abundant in the
local atmosphere followed by PM2.5– PM10, while the respirable fraction (PM2.5) and giant fraction
(PM>100) showed lower levels. The studied samples contain less PM2.5 and PM10 particulates (9.39 and
28.67) respectively, than blank samples (17.32 and 51.7) for PM2.5 and PM10 respectively. This might
indicate that the distribution of dust particle sizes was controlled by meteorological effect, mainly the
prevailing wind direction and the lower precipitation rates. The effect of phosphate mining processes
was obvious as indicated from the apatite domination beside the high P contents in the samples. This
feature was different from the blank samples. Moreover, the Zn, Ni, Cu and to lesser extent Cr higher
concentrations, which might be attributed to their significant positive correlation with P, as they might
associated within the apatite mineral lattice.

Keywords: Dry deposition, Particulate matter, Apatite, Phosphate mine.

PAPER 2009/s17.6: INORGANIC CHEMISTRY, GRANULOMETRY AND MINERALOGICAL CHARACTERISTICS OF THE DUST FALL OVER PHOSPHATE MINE ADJACENT AREA, CENTRAL JORDAN.

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