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- 2056
Time series of concentrations of heavy metals in the sediments in the Gotland deep, Baltic Sea (1992-)
Data set information
| Query EDMED |
General | |
Data holding centre | Finnish Environment Institute |
Country | Finland |
Time period | 1992- |
Ongoing | Yes |
Geographical area | The Baltic Sea, the Gotland deep |
Observations | |
Parameters | Nitrogen concentrations in sediment; Carbon 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. |
Originators | Finnish Institute of Marine Research |
Availability | |
Organisation | Finnish Environment Institute |
Availability | Unknown |
Contact | Riitta Olsonen |
Address | Finnish Environment Institute |
Telephone | +358 40 182 3254 |
riitta.olsonen@ymparisto.fi | |
Administration | |
Collating centre | Finnish Institute of Marine Research |
Local identifier | 19001022 |
Global identifier | 2056 |
Last revised | 2010-11-22 |