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@ARTICLE{Srarfi:864363,
author = {Srarfi, Feyda and Rachdi, Raouen and Bol, Roland and Gocke,
Martina I. and Brahim, Nadhem and SlimShimi, Najet},
title = {{S}tream sediments geochemistry and the influence of flood
phosphate mud in mining area, {M}etlaoui, {W}estern south of
{T}unisia},
journal = {Environmental earth sciences},
volume = {78},
number = {6},
issn = {1866-6299},
address = {Heidelberg},
publisher = {Springer},
reportid = {FZJ-2019-04158},
pages = {211},
year = {2019},
abstract = {Heavy metals in industrial wastes do worldwide
significantly influence surface waters, soils, and human
health. The relationships between geochemical stream
sediment composition and industrial pollution by phosphate
mud flood were examined to assess the severity level of the
heavy metal contamination due to the mining activities in
the Gafsa-Metlaoui basin (Tunisia). A statistical approach
based on linear correlations and principal components
analysis of 8 metal contents was used in stream sediment,
which was applied to 21 samples of surveyed Metlaoui stream.
Within the final model, four Eigen factors did explain
almost $90\%$ of the total variance matrix (F1: $42.25\%,$
F2: $19.60\%,$ F3: 15.50 and F4: $10.15\%).$ Three main
metal associations were found in the Metlaoui stream
sediment. The first was concerned with Titanium (Ti) and
Zirconium (Zr) as conservative elements. The second related
to the important role of Manganese (Mn) with Iron (Fe)
hydroxides in fixing metals. Finally, the third one
consisting of Zinc (Zn), Nickel (Ni), Copper (Cu) and
Molybdenum (Mo) is all known to be linked to local mining
activities sources. The overall degree of contamination was
in the following order (high to low):
Ti > Zr > Zn > Mo > Mn > Ni > Fe > Cu,
but the extent of the contamination did decrease downstream
from the mining activity. Phosphate mining activity,
especially washing phosphate, leads to an unwanted heavy
metals contamination in the nearby surrounding environment.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000460917000005},
doi = {10.1007/s12665-019-8215-2},
url = {https://juser.fz-juelich.de/record/864363},
}