European Directory of Marine Environmental Data (EDMED)

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General
Data set name

Heavy metals in the Gulf of Finland (2001-2004)

Data holding centreFinnish Environment Institute
CountryFinland  Finland
Time period2001-2004
OngoingNo
Geographical area

The Gulf of Finland, Archipelago Sea

Observations 
Parameters

Carbonate chemistry in sediment pore waters; Trace metalloid concentrations in sediment pore water; Nutrient concentrations in sediment pore waters

Instruments

Sediment grabs; atomic absorption spectrometers; inductively-coupled plasma atomic emission spectroscopes

Description 
Summary

The samples were taken with gravity corer from soft sediment on board R/V Aranda on different cruises 2001-. The sediment cores were cut into 1 cm subsamples and from 0-10 in 1cm interval, 15-16, 20-21 and 25-26 cm were analysed for total metals. Freeze dried and homogenised samples were digested with aqua regia hydrofluoric acid and boric acid by microwave oven for total metal analysis. 16 elements were analysed by AAS and ICP-AES (including P). Easily available metals were analysed from 0-5 and 25-26 cm. Freeze dried sediment samples were extracted with 0,11M acetic acid for 2 hours. 11 elements were analysed by ICP-MS. Easily available extractions were made for fresh sediment samples from few stations. Sediment pore water was squeezed from the sediment through 0,45 micrometer filter with hydraulic jack. Pore water was directed to helium filled gas box and aliquot 12 ml samples were acidified with strong s.p. HNO3. Pore water samples were stored at + 4 degrees Celcius and analysed with ICP-MS. 12 elements were analysed by ICP-MS (including P). Analysing certified reference materials with samples controlled the quality of analysis. This is ongoing study.

OriginatorsFinnish Institute of Marine Research (FIMR)
Availability 
OrganisationFinnish Environment Institute
AvailabilityUnknown
ContactMirja Leivuori (senior researcher)
Address

Finnish Environment Institute
Mechelininkatu 34a
Helsinki

00260
Finland

Emailmirja.leivuori@ymparisto.fi
Administration 
Collating centreFinnish Institute of Marine Research (FIMR)
Local identifier19001045
Global identifier2070
Last revised2009-11-24