Geochemical behaviour of PM10 aerosol constituents under the influence of succeeding anticyclonic/cyclonic situations: case of Sfax City, southern Tunisia.

Authors:
Mr Bahloul Moez, PhD
Mr Bahloul Moez, PhD
FACULTY OF SCIENCE
Ph D graduate
Atmospheric Geochemistry
Sfax, Sfax | Tunisia

Environ Monit Assess 2015 Dec 18;187(12):757. Epub 2015 Nov 18.

Unité de recherche, Etude et Gestion des Environnements Côtiers et Urbains, Faculté des Sciences de Sfax, Université de Sfax, BP 1171, 3000, Sfax, Tunisie.

The present study investigates the geochemical behaviour of PM10 aerosol constituents (Cl, Na, Si, Al, Ca, Fe, Mg, Mn, Pb, Zn, S) at Sfax City (Tunisia) under succeeding meteorological conditions, including short-lived anticyclonic, cyclonic and prolonged anticyclonic situations. The results revealed daily total concentrations fluctuating between 4.07 and 88.51 μg/m(3). The highest level recorded was noted to occur under the effect of the short-lived anticyclonic situation characterized by low wind speeds. It was 1.5 times higher than those recorded during cyclonic and long-lived anticyclonic situations characterized by moderate to high wind speeds. During the cyclonic situation, the marked increase of (Na and Cl) concentrations is associated with relatively high sea wind speeds (6 to 9 m/s), which are in turn responsible for a slight increase of crustal elements such as Al, Ca, Si, Fe and Mg, by the entrainment in the air of dust from roads and undeveloped areas. During the two anticyclonic situations, the simultaneous increase (due to communal transport) of crustal (Ca, Si, Al, Fe, Mg) and man-made (Mn, S, Pb, Zn) elements was noted to be associated with the dominance of terrigenious wind flows with speeds varying between 1.5 and 4 m/s. However, the significant contribution rates observed for Cl under the prevalence of such winds as compared to other crustal elements such as Fe suggested the influence of the sebkhas of Southern Tunisia.

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10661-015-4980-xDOI Listing
December 2015
3 Reads
1.680 Impact Factor

Publication Analysis

Top Keywords

anticyclonic situations
12
wind speeds
12
southern tunisia
8
crustal elements
8
sfax city
8
aerosol constituents
8
short-lived anticyclonic
8
behaviour pm10
8
geochemical behaviour
8
pm10 aerosol
8
anticyclonic
5
cyclonic situation
4
long-lived anticyclonic
4
situation marked
4
cyclonic long-lived
4
situations characterized
4
recorded cyclonic
4
high wind
4
moderate high
4
characterized moderate
4

References

(Supplied by CrossRef)

JA Araujo et al.
Air Quality, Atmosphere and Health 2011

C Azri et al.
Pollution atmosphérique, no 2001

C Azri et al.
Pollution atmosphérique, no 2000

C Azri et al.
Pollution atmosphérique, no 2002

C Azri et al.
Advances in Atmospheric Sciences 2009

C Azri et al.
International Journal of Environment and Pollution 2010

C Azri et al.
Atmosfera 2010

W Bach et al.
Reviews of Geophysics and Space Physics 1976

I Belghith et al.
1999

Similar Publications