European Directory of Marine Environmental Data (EDMED)

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General
Data set name

Trace metal and nutrients in Maliakos Gulf and the estuary of Sperchios river, Central Greece (1982-1986, 1997-2000)

Data holding centreUniversity of Athens, Department of Chemistry, Division of Inorganic and Environmental Chemistry, Environmental and Marine Chemistry Group (EMCG/UATH)
CountryGreece  Greece
Time period1982 -1986, 1997-2000
OngoingNo
Geographical area

A grid of 10 stations covering the gulf area and other 8 station inside the river and the estuary.

Observations 
Parameters

Ammonium and ammonia concentration parameters in water bodies; Dissolved oxygen parameters in the water column; Dissolved metal concentrations in the water column; Particulate metal concentrations in the water column; Nitrate concentration parameters in the water column; Phosphate concentration parameters in the water column; Concentration of polychlorobiphenyls (PCBs) in the water column; Salinity of the water column; Silicate concentration parameters in the water column; Temperature of the water column; Nitrite concentration parameters in the water column; Alkalinity, acidity and pH of the water column

Instruments

Salinity sensor; pH sensors; spectrophotometers

Description 
Summary

The nutrients, trace metal and organic pollutants levels were studied in the area of Maliakos gulf and the estuary of Sperchios river through a period of 4 years (1982-86) and again from 1997 to 2000. Water samples were collected using HYDRO-BIOS sampling bottles from surface and deeper waters (surface, 10m, 20m, 50m). Basic physicochemical data were measured in situ. Analyses on nutrients (NO3, NO2, NH4, PO4, SiO4) were carried out according to the standard photometric methods of Strickland and Parsons. The particulate phase was obtained after filtration through a 0.45 micrometer Millipore membrane filter. The filters were then digested with conc. HNO3. The dissolved phase was preconcentrated on a CHELEX-100 resin and the metals were eluted with HNO3 acid. Special care was taken to eliminate any contamination problems during analysis. Trace metal concentrations were determined by GFAAS. Organic carbon was determined by a TOC analyzer and pesticides by HPLC. The data are stored on a DBase III Plus format with an index on sampling date, station and depth and can be processed in order to produce reports for each set of parameters (basic data, nutrients, each metal in dissolved and particulate phase) as a depth series per station per sampling date or an 'historical' report as a time series per depth per station. Both these reports are stored as text files.

OriginatorsUniversity of Athens, Department of Chemistry, Division of Inorganic and Environmental Chemistry, Environmental and Marine Chemistry Group (EMCG/UATH)
Availability 
OrganisationUniversity of Athens, Department of Chemistry, Division of Inorganic and Environmental Chemistry, Environmental and Marine Chemistry Group (EMCG/UATH)
AvailabilityUnrestricted
ContactProf. M. Scoullos / Assoc. Prof. M. Dassenakis
Address

University of Athens, Department of Chemistry, Division of Inorganic and Environmental Chemistry, Environmental and Marine Chemistry Group (EMCG/UATH)
Panepistimiopolis
Athens

157 01
Greece

Telephone+30-210-7274274, ...7274269
Emailedasenak@cc.uoa.gr
Administration 
Collating centreHellenic Centre for Marine Research, Hellenic National Oceanographic Data Centre (HCMR/HNODC)
Local identifier6031006
Global identifier1345
Last revised2015-07-22