This
paper presents data on the concentrations of ten heavy metal levels in water
and sediment sampled from Işıklı Lake (Turkey) as seasonally (October-2012,
January-2013, April-2013, July-2013) and shows relationships between physico-chemical parameters and levels
of heavy metals. Temperature, pH,
dissolved oxygen and electrical conductivity were measured. In water, Pb was below
detection limit (<0.005) in all seasons, while Cu (<0.0005) was in autumn
and winter. Fe had the highest level and Cd had the lowest level among the
analyzed metals. Cr, Cu, Fe, Mn, Ni and Se reached the highest levels in
summer, while Cd, Mo and Zn were in spring. Cd, Cr, Mo and Zn in autumn, Cu and
Se in spring, and Fe, Mn, and Ni in winter were the lowest. Cd, Cu and Mo
levels varied significantly (p<0.05) from season to season. There were
positive relationships among temperature, pH value (p<0.05) and EC.
Significant negative correlation (<0.01) was determined between temperature
and dissolved oxygen. Significant (Cr, Cu, Mn and Zn) and non-significant (Cd,
Fe, Mo, Ni and Se) positive correlations were detected between content in water
and temperature. There were positive
correlations between pH and dissolved oxygen, while negative correlation with
EC. When the pH value increased, only Mo level decreased. Dissolved oxygen
levels had a positive relationship with EC and all studied metals except Cu.
There were positive relationships between EC and Cd, Cr, Mn, Mo and Zn, the
others were significant negative (<0.01). In sediment, Se was
below detection limit in winter, other metals were detected in all seasons. Fe
was the highest while Cd was the lowest in sediment. Cd, Cr, Mn, Mo, Ni and Zn reached the highest levels in spring, while Fe
in winter, Cu in autumn, Pb in summer. Cr, Mn, Mo, Ni, Pb and Zn in winter, Cd
and Se in autumn, Cu in summer and Fe in
spring were the lowest. Cd, Cu and Mo levels varied significantly (p<0.05)
from season to season.
Subjects | Hydrobiology |
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Journal Section | Articles |
Authors | |
Publication Date | February 24, 2017 |
Published in Issue | Year 2017 Volume: 3 Issue: 2 |