European Directory of Marine Environmental Data (EDMED)

Data set information

| Query EDMED |     

General
Data set name

Time series of concentrations of heavy metals in the sediments in the Gotland deep, Baltic Sea (1992-)

Data holding centreFinnish Environment Institute
CountryFinland  Finland
Time period1992-
OngoingYes
Geographical area

The Baltic Sea, the Gotland deep

Observations 
Parameters

Carbon concentrations in sediment; Nitrogen concentrations in sediment; Inorganic chemical composition of sediment or rocks

Instruments

Sediment grabs; atomic absorption spectrometers; spectrophotometers

Description 
Summary

The samples were taken in the Gotland deep with a gravity corer for soft sediments on board R/V Aranda on different cruises during 1992-1995. The sediment corers were cut into 1 cm subsamples and mostly the twenty uppermost subsamples were analysed. The total amount of subsamples was about 80. The freeze dried and homogenated samples were digested with aqua regia, hydrofluoric acid and boric acid by microwave oven for elemental analysis. For mercury analyses the samples were digested with nitric acid in an autoclave. 17 elements were analysed by AAS and ICP-AES (including P). The quality of analysis were controlled by analysing certified reference materials with the samples. Some analysis of C and N are still missing, but the series will be continued 1996 and analysis will be finished. The data set shows the distribution of elements in the sediments in the Gotland deep as a function of time and in different hydrochemical situation.

OriginatorsFinnish Institute of Marine Research (FIMR)
Availability 
OrganisationFinnish Environment Institute
AvailabilityUnknown
ContactRiitta Olsonen
Address

Finnish Environment Institute
Mechelininkatu 34a
Helsinki

00260
Finland

Telephone+358 40 182 3254
Emailriitta.olsonen@ymparisto.fi
Administration 
Collating centreFinnish Institute of Marine Research (FIMR)
Local identifier19001022
Global identifier2056
Last revised2010-11-22