Unit:
Κατεύθυνση Χημεία και Τεχνολογία ΠεριβάλλοντοςLibrary of the School of Science
Supervisors info:
Σκούλλος Μιχαήλ Καθηγητής (Επιβλέπων), Δασενάκης Μάνος Καθηγητής , Μιχόπουλος Παναγιώτης Ερευνητής Α’
Original Title:
Σύμπλεξη του χαλκού στη διαπερώσα βροχή και το βρόχινο νερό: Επίδραση της βλάστησης
Translated title:
Complexing capacity of copper in throughfall - Influence of vegetation
Summary:
The total amount of rainfall can reach the ground either as «open-field» rain
or as throughfall which passes through the canopy of trees. The interaction of
the rain droplets with foliage leads to the modification of the chemical
composition of throughfall and to its enrichment with organic material due to
the leaching and the microbial activity which occur in leaves. The organic
material can form complexes with soluble trace metals of rain, such as copper.
In the present study, the complexing capacity of copper was determined in
samples of rainwater and throughfall by differential pulse anodic stripping
voltammetry (DPASV). This is the first time that complexing capacity of copper
is determined in throughfall. The samples were collected during the period
September 2013 - April 2014 and the sampling sites were Varetada (Amfilochia)
and Karpenisi. The complexing capacity of copper ions in throughfall was
measured equal to 2529 nM (2196 - 3143 nM) at Varetada and 1854 nM (1472- 2762
nM) at Karpenisi. These concentrations were greater than those of rainwater
(525 nM (126 - 1328 nM) at Varetada and 335 nM (35 - 518 nM) at Karpenisi).
Therefore, the complexing capacity of copper in throughfall was higher than
that of rainwater, approximately four times (379%) in the case of Varetada and
three (314%) in the case of Karpenisi. These results constitute a strong
indication for the influence of vegetation on the complexation of copper ions
with organic ligands.
Keywords:
Throughfall, Complexing capacity (LT), Copper, Rainfall, Atmosphere
Number of references:
155
