INQUISAL   20936
INSTITUTO DE QUIMICA DE SAN LUIS "DR. ROBERTO ANTONIO OLSINA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Mercury speciation in different tissues of Hg-enriched vines
Autor/es:
PABLO PACHECO; FEDERICO GOMEZ; LUIS DANTE MARTINEZ; MARIA FERNANDA SILVA
Reunión:
Simposio; XI Rio Symposium on Atomic Spectrometry; 2010
Resumen:
Public health reasons and the fact
that mercury is a potential environmental toxicant have increased the interest
in mercury speciation analysis in a variety of biological, industrial, and food
samples. Vitis Vinifera is economically important as the source of grapes, both
for direct consumption of the fruit and for fermentation to produce wine. This
study describes the absorption and distribution patterns of mercury in
different tissues of Vitis Vinifera cv Malbec plants after supplementation with
inorganic mercury.
In a first stage, Malbec plants were grown and supplemented with inorganic
mercury through irrigation water. Different concentrations of mercury were
evaluated in order to establish the adequate concentration for future studies. After
four days of supplementation, the plants were allowed
to mature for one additional week before harvesting. The health of each plant
was visually indifferent to the supplementation type given. Roots, stems and leaves were collected. Different tissue samples were dried and lyophilized
prior to its analysis.
The
analysis was performed in a first stage through an extraction process, followed
by the determination of organic and inorganic fractions through FI-UV-CV-AFS.
Results revealed that contaminated irrigation waters can be a potential source
of mercury for Vitis Vinifera plants. In addition, Malbec plants showed a great
capacity to accumulate mercury. Mercury analysis through FI-UV-CV-AFS showed
that mercury in vines is accumulated mostly as organic fraction.