Hana Youssef Learoussy
Nouakchott University, MauritaniaTitle: Assessment of the potential health risks associated with six trace elements in halieutic products from the Mauritanian Atlantic coast
Abstract
Halieutic products are consumed widely and
literature showed that they may be a major source
of human exposure to various environmental
contaminants such as trace elements. Mauritanian
Atlantic coast is an importing fishing area, our
study focused on the determination of six trace
elements (Cd; Hg; Pb; Cu; Fe and Zn) in the muscle
of most consumed and worldwide-commercialized
halieutic products (Sardinella aurita; Sardinella
maderensis; Trachurus trachurus; Dentex
angolensis; Mugil cephalus and Octopus vulgaris).
Samples were collected from two sites with
important anthropogenic activities (Nouakchott
and Nouadhibou coast). The presence of cadmium,
lead, copper, iron and zinc was proceeded using
ICP-OES technique, while the determination of
mercury was carried out with a Direct Mercury
Analyzer. Results showed that lead was not
detected in samples from Nouakchott coast;
however, it was detected in two from five samples
of O. vulgaris species collected from the
Nouadhibou coast. Cd; Hg and Pb concentrations
in all species were under the maximum residue
level fixed by the European Commission
regulation.
Biography
The highest mean content of cadmium was
detected in O. vulgaris and for mercury in S.
maderensis. The highest mean value of copper was
obtained with M. cephalus whereas the highest of
iron and zinc were found with S. aurita and T.
trachurus respectively. To evaluate the potential
health risks linked to the consumption of the
studied species; the Target Hazard Quotient (THQ)
and the Hazard Index (HI) were used. Results
showed that S. aurita; S. maderensis; T. trachurus
and D. angolensis have THQ and HI values that are
under the tolerated limit. Results of the current
study indicate that the examined halieutic product
have accepted concentrations of non-essential trace
elements. As regards the estimation of potential
health risks, calculation showed no risk related to
the consumption of the studied species for children
and adults
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