ΧΗΜΙΚΗ ΜΕΛΕΤΗ ΤΗΣ ΔΙΑΚΙΝΗΣΗΣ ΤΩΝ AL-FE-MN-CU-PB-ZN ΣΤΙΣ ΕΚΒΟΛΕΣ ΤΟΥ ΑΧΕΛΩΟΥ

THIS STUDY CONCERNS THE CHEMICAL BEHAVIOUR AND TRANSPORTATION OF SOME TRACE METALS (AL,CU,FE,MN,ZN,PB) AMONG THE DISSOLVED, SUSPENDED AND SEDIMENT PHASE, IN AN ESTUARINE ENVIRONMENT. THE AREA STUDIED IS AN INTERESTING MEDITERRANEAN ESTUARY. A NETWORK OF SEVERAL SAMPLING STATIONS WAS DESIGNED FOR THE PURPOSES OF THIS STUDY. SAMPLES FROM THE DISSOLVED AND PARTICULATE PHASE WERE COLLECTED WITH NANSEN-10C BOTTLES. SEDIMENT SAMPLES WERE COLLECTED WITH A MACKERETH CORER. THE DISSOLVED METAL WAS PRECONCENTRATED WITH CHELEX-100 RESIN AND MEASURED WITH GFAAS. THE TRACE METAL CONTENT OF THE PARTICULATE MATTER AND THE SEDIMENTS WAS EXTRACTED EITHER BY USING COLD-DILUTED HCL OR BY USING HOT-CONC. HNO3, AND THEN MEASURED WITH AAS. IN ADDITION TO THE ABOVE, A SERIES OF PHYSICAL PARAMETERS WERE MEASURED IN SITU (PH, D.O., S%, T C). THE RESULTS WERE WORKED OUT BY USING APERSONAL COMPUTER IN ORDER TO FIND CORRELATIONS AMONG THE VARIOUS PARAMETERS' MEASURED AND DEFINE THE MECHANISMS PREVAILING IN THE ABOVE DISCUSSED SYSTEM. THE CONCLUSION OBTAINED IS THAT IN THE INTERMIXING ZONE OF FRESH AND SALINE WATERS A SERIES OF INTERESTING CHEMICAL PHENOMENA TAKE PLACE. ALL METALS EXAMINED, WITH THE EXCEPTION OF FE AND AL, PARTICIPATE IN THESE PHENOMENA SHOWING VARIOUS TRENDS WHICH IN SOME CASES ARE SEASONAL. THE MOST IMPORTANT OF THESE IS THE TRANSPORT OF PB AND ZN FROM THE DISSOLVED TO THE PARTICULATE PHASE, THE INCREASE OF DISSOLVED METALS IN SALINE OFFSHORE WATERS, THE INCREASE OF THE CONCENTRATIONOF MN AND ZN IN THE SEDIMENTS NEAR THE MOUTH AND THE ANALOGOUS DISTRIBUTIONS OF AL, FE, CU, PB, ZN CONCENTRATIONS IN THE SURFACE SEDIMENTS LEADING TO DISCRETE ZONES. THE POLLUTION LEVELS OF THE AREA IN TRACE METALS WERE ALSO EXAMINED. THE AREA IS NOT HEAVILY AFFECTED BY ANTHROPOGENIC INPUT BUT SOME TREND OF INCREASING CONCENTRATION LEVELS WERE OBSERVED. THIS FACT IMPLIES THE NEED FOR A CONTINIOUS CHEMICAL MONITORING.

Grantor dc:publisher

National and Kapodistrian University of Athens

Year dc:date

1989

Authors dc:creator

• Δασενάκης, Μάνος
• Dassenakis, Emmanouil

• ΑΝΑΛΥΣΗ ΙΖΗΜΑΤΩΝ
• Ανάλυση νερών
• Ατομική απορρόφηση
• Αχελώος
• ΕΚΒΟΛΕΣ ΠΟΤΑΜΩΝ
• Ιζήματα θαλάσσια
• Ιχνοστοιχεία
• ΜΕΤΑΦΟΡΑ ΙΧΝΟΣΤΟΙΧΕΙΩΝ
• ΠΡΟΣΥΓΚΕΝΤΡΩΣΗ ΜΕ CHELEX-100
• Acheloos river
• Atomic absorption
• CHELEX-100 (PRECONCENTRATION)
• CONCENTRATIVE (NON) - BEHAVIOUR
• ESTUARIES
• METAL EXTRACTION FROM SEDIMENTS
• Particulate matters
• Sediments
• Trace elements
• Water analysis
• Φυσικές Επιστήμες
• Χημεία
• Natural Sciences
• Chemical Sciences

Language dc:language

gre

Identifier

10.12681/eadd/1581

OAI identifier oai:identifier

oai:10442/1581