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1

On some factors influencing accuracy and precision of Baltic water absorbance measurements

100%
Grzybowski W.
Oceanological Studies
|
2000
|
vol. 29
|
issue 4
5-13
EN
Various factors influencing the quality of UVVIS spectra obtained for sea water (in 100 mm cells) have been tested. The spectrophometer instability and baseline drift introduced absorbance error of ~ 0.0002 and ~ 0.001, respectively. Deviations caused by improper blanks reached 0.005 ab-sorbance units. Standard deviation of absorbance values determined for samples collected in the Gulf of Gdansk during repetitive casts (0.008-0.022) significantly exceeded the detection limit based on variability of the blank sample (0.002).
2

Polonium, uranium and plutonium in the Southern Baltic Sea

88%
Skwarzec B.
Oceanological Studies
|
1997
|
vol. 26
|
issue 1
195-204
EN
This paper presents the results of measurements of polonium, uranium and plutonium radionu-clides in selected components of the southern Baltic ecosystem, as well as the recognition of their accumulation processes in the trophic chain. Investigation on the 210Po, 239+240Pu concentrations in the Baltic biota revealed that these radionuclides are strongly accumulated by some species. Their mean values of the bioaccumulation factor (BCF)* fell within the range from 9?102 to 2.5?104. The Baltic Sea algae, benthic animals and fish concentrated uranium isotopes only to a small degree, and mean BCF values for this element range from 1 to 55, what is several orders of magnitude lower than for polonium and plutonium. Moreover, it was found that fish constitute an important source of 210Po for human.
3

Proposals for the Baltic monitoring programme (HELCOM BMP) for the Polish marine areas of the Baltic Sea

88%
Andrulewicz E.
Oceanological Studies
|
1996
|
vol. 25
|
issue 1-2
159-177
4

Looking for new sources of renewable energy.Concentration cells

88%
Magonski J., Korzeniewski K.
Oceanological Studies
|
1993
|
issue 64/3
119-121
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