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M. K. Pham,
M. Betti,
P. P. Povinec,
M. Benmansour, R. Bojanowski,
P. Bouisset,
E. C. Calvo,
G. J. Ham,
E. Holm,
M. Hult, [......],
J.-S. Oh,
M. Pellicciari,
U. Rieth,
A. M. Rodriguez y Baena,
J. A. Sanchez-Cabeza,
H. Satake,
J. Schikowski,
M. Takeishi,
H. Thébault,
Z. Varga
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ABSTRACT: A new Reference Material (RM) for radionuclides in mussel (Mytilus
galloprovincialis) from the Mediterranean Sea (IAEA-437) is described and the results of the certification process are presented. Four radionuclides
(40K, 234U, 238U, and 239+240Pu) have been certified, and information values on massic activities with 95% confidence intervals are given for nine radionuclides
(137Cs, 210Pb(210Po), 226Ra, 228Ra, 228Th, 230Th, 232Th, 235U, and 241Am). Results for less frequently reported radionuclides (90Sr, 129I, 238Pu, 239Pu, and 240Pu) are also reported. The RM can be used for quality assurance/quality control of the analysis of radionuclides in mussel
samples, for the development and validation of analytical methods and for training purposes. The material is available in
200g units.
Journal of Radioanalytical and Nuclear Chemistry 04/2012; 283(3):851-859. · 1.52 Impact Factor
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ABSTRACT: Activity coefficients of 137Cs determined during culminating flood waters in August 1997 in the estuary of the Oder River, discharging to the Pomeranian Bay as well as in the coastal and open-seawaters of the Bay, did not show enhanced levels of the nuclide as compared to those measured before the flood. It is thus concluded that the flood did not contribute to releasing the nuclide from eroded soil particles. The bioconcentration factors of 137Cs in the riverine plankton has been found to be one to two orders of magnitude higher than those determined in the Pomeranian Bay plankton.
Marine Pollution Bulletin 01/2004; 46(12):1558-62. · 2.50 Impact Factor
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ABSTRACT: A simple and rapid method has been developed to determine 226Ra in rocks, soils, and sediments. Samples are decomposed by fusion with lithium metaborate and the melt is dissolved in a solution containing sulfates and citric acid. During the dissolution, a fine suspension of mixed barium and radium sulfates is formed. The microcrystals are collected on a membrane filter (pore size 0.1 microm) and analysed in an alpha spectrometer. Application of a 133Ba tracer enables us to assess the loss of the analyte, which only rarely exceeds 10%. All analytical operations, beginning from sample decomposition to source preparation for alpha spectrometry, can be accomplished within 1 or 2 h. With uranium determination, the filtrate is spiked with a 232U tracer and passed through a column loaded with a Dowex AG (1 x 4) anion-exchange resin in the sulfate form. Interfering elements are eluted with dilute sulfuric acid followed by concentrated hydrochloric acid. Uranium is eluted with water, electrodeposited on silver discs, and analysed in the alpha spectrometer. The method was tested on reference soil and sediment materials and was found to be accurate within the estimated uncertainties.
TheScientificWorldJOURNAL 08/2002; 2:1891-905. · 1.66 Impact Factor
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ABSTRACT: The kinetics of radiocesium (137Cs) uptake by natural suspended matter collected from coastal waters in the southern Baltic has been studied under laboratory conditions. The uptake of radiocesium from seawater by the suspended matter took place immediately after introduction of the isotope and attained equilibrium within a few hours. Summer and winter suspended matter displayed equal Kd values, indicating similar sorption characteristics of radiocesium. The amounts of radiocesium sorbed from sea water were proportional to the suspended matter concentration studied,i.e. up to 312 mg dry wt dm–3. The relative uptake of radiocesium by live and dead plankton appeared to be the same. The desorption of radiocesium from dead plankton proceeded more rapidly and more intensively than sorption. There are no significant differences between the Kd values for plankton determined in laboratory experiments and those found for plankton populations under field conditions.
Aquatic Ecology 01/1995; 29(3):283-290. · 1.37 Impact Factor
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ABSTRACT: Laboratory expriments have demonstrated that radiocaesium can be released in different proportions from Baltic sediments,
depending on the type and origin of sediment, contact time and solid-to-liquid phase ratio. Rapidly accumulating sediments
in areas affected by river discharge have much higher percentage of exchangeable radiocaesium than slowly accumulating marine
sediments. The latter have been shown to {uptake radiocaesium from overlying sea water at high suspended loads. Pronounced
radiocaesium gradients at sediment-water interface in Gda\'nsk Bay can be explained by either diffusion from pore water or
desorption from sediment particles uprised by waves and/or bottom currents, or a combination of both. Desorption is likely
to decrease with age of the sediment.
Aquatic Ecology 08/1994; 28(3):413-419. · 1.37 Impact Factor
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ABSTRACT: Concentration of Zn, Cu, Cd, Pb, Ag, Co, Ni, Cr, Mn and Fe were determined in muscle and liver of three species of penguins and other animals of the antarctic region. Liver was characterized by maximum concentrations of all the metals analyzed. The element levels in the samples assayed are in keeping with those reported previously by other authors. It is assumed that specific food habits of penguins are mainly responsible for elevated Cd levels in livers of these birds.
Science of The Total Environment 10/1993; 138(1-3):281-8. · 3.29 Impact Factor
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ABSTRACT: This paper presents the results of an investigation from 1980 to 1985 on the content of 210Po in sea water and its accumulation in southern Baltic plankton. The mean value of the 210Po concentration in sea water has been determined to be about 0.5 mBq dm-3, with the proportion of the dissolved forms being ca 80%. It has been proved that 210Po is accumulated by plankton organisms. The mean 210Po concentration factors calculated on the basis of its content in plankton fall within the range from 5103 to 4.2104 and increase as follows: phytoplankton210Po concentration in mesozooplankton collected at the Slupsk Trough and the Gdask Basin have been observed. The above differences have been related to intense blue-green alga blooming in the Gdask Basin.
Marine Biology 01/1988; 97(2):301-307. · 2.28 Impact Factor
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ABSTRACT: A new method of227Ac determination is based on total sample decomposition, followed by preconcentration as oxalate and hydroxides, and purification from thorium isotopes and rare earths on ion-exchange columns with nitric acid. The actinium is electroplated on stainless-steel discs with near 100% yield from a water/propanol medium and measured by alpha spectrometry.225Ac is used as a yield monitor. An immediate first count gives overall tracer recovery (typically around 80%). A second count two months later gives a sensitive measure of227Ac through its decay products at 5.5–6.1 MeV. Analysis of reference samples gave satisfactory results.
Journal of Radioanalytical and Nuclear Chemistry 09/1987; 115(1):23-37. · 1.52 Impact Factor
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ABSTRACT: In this study the levels of 137Cs, mostly originating from the Chernobyl fallout, as well as levels of natural radionuclides 40K and 210Pb present in caps and stalks of edible mushroom samples and soil from Poland were measured. The analytical technique used was alpha spectrometry to determine 210Pb through its granddaughter 210Po. The 137Cs and 40K activity concentrations were determined by gamma spectrometry. The radionuclide activities in Xerocomus badius were in the ranges: 330–6670 (137Cs), 180–1520 (40K) and 0.70–32.0 (210Pb) Bq kg−1 d.w. The highest measured concentration of 137Cs was in the caps of X. badius from the Borecka Forest. The caps of examined mushrooms showed significantly higher activity concentrations compared to the stalks. In order to estimate the degree of accumulation of each element by mushrooms, transfer factor (TF) soil–cap and soil–stalk values were calculated. Also, some commercial mushrooms were examined such as dried, frozen and marinated products.
Food Chemistry.
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P P Povinec,
M K Pham,
J A Sanchez-Cabeza,
G. Barci-Funel, R. Bojanowski,
T. Boshkova,
W C Burnett,
F. Carvalho,
B. Chapeyron,
I. L. Cunha, [......],
le,
H.B.L. Petterson,
A. Reineking,
P. A. Smedley,
A. Suckow,
Struijs,
T.D.B,
P. I. Voors,
K. Yoshimizu,
E Wyse
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ABSTRACT: A reference material designed for the determination of anthropogenic and natural radionuclides in sediment, IAEA-384 (Fangataufa Lagoon sediment), is described and the results of certification are presented. The material has been certified for 8 radionuclides (40K, 60Co, 155Eu, 230Th, 238U, 238Pu, 239+240Pu and 241Am). Information values are given for 12 radionuclides (90Sr, 137Cs, 210Pb (210Po), 226Ra, 228Ra, 232Th, 234U, 235U, 239Pu, 240Pu and 241Pu). Less reported radionuclides include 228Th, 236U, 239Np and 242Pu. The reference material may be used for quality management of radioanalytical laboratories engaged in the analysis of radionuclides in the environment, as well as for the development and validation of analytical methods and for training purposes. The material is available from IAEA in 100 g units.
Journal of Radioanalytical and Nuclear Chemistry 273 (2007) 2.
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ABSTRACT: Journal of environmental radioactivity, ISSN 0265-931X, vol. 15 , 249-263 In the paper are presented results of measurements of plutonium isotopes in the Baltic Sea, sediments and biota following the Chernobyl accident. Generally the impact of Chernobyl-derived plutonium on the Baltic ecosystem within the Polish Economic Zone was insignificant. Affiliation: Inst. of Oceanology, Polish Academy of Sciences, Sopot
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ABSTRACT: Biuletyn Morskiego Instytutu Rybackiego, ISSN 0209-0708, nr. 1 (125), 11-14 The laboratory experiment was set up to determine if the radiocesium deposited on the bottom of the Baltic Sea displays any tendency for desorption upon contact with sea water. The results indicate that desorption of radiocesium for sandy sediments for sea water of varying salinity differs markedly (0.6 to 6.0 % respectively) and the degree of desorption is controlled by the salinity of water overlying the bottom sediments. Affiliation: Institute of Oceanology, Polish Acad. of Sciences, Sopot
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ABSTRACT: 18th Conference of the Baltic Oceanographers, St. Petersburg, 23 Nov 1992, 1-6 Laboratory experiments have shown that natural sea water, brought in contact with naturally spiked Baltic sediments can liberate only little caesium radioisotopes. The highest recorded desorption was observed in sandy sediments and did not exceed 6 per cent. The results of experiments speak in favour of the assumption that time plays and important role in the strength and reversibility of caesium fixation process. Affiliation: Dept. of Chemistry and Biochemistry, Institute of Oceanology, Polish Academy of Sciences, Sopot Conference of the Baltic Oceanographers. 18. St. Petersburg, 1992
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ABSTRACT: Biul. Mor. Inst. Ryb., ISSN 0209-0708, nr. 3/136, 15-25 Radiochemical investigations of the Pomeranian Bay were carried out in 1993. Samples of sea water, plankton, marine organisms, and bottom sediments were analysed for cesium, polonium, and plutonium radionuclides content. In this paper the results are presented. Affiliation: Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland
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ABSTRACT: Proceedings of the 19th Conference of the Baltic Oceanographers. Sopot, 29 Aug. 1994. Vol. 2. ISBN 83-900555-4-6, 560-573 The paper shows that the uptake of radiocesium from seawater by the natural suspended matter takes place immediately after introduction of the isotope. Intensity of the uptake of radiocesium by live and dead plankton is the same. The suspended matter of bottom sediment shows similar abilities for uptake of radiocesium from seawater as plankton. Affiliation: Institute of Oceanology, Polish Academy of Sciences, Sopot Conference of the Baltic Oceanographers. 19. Sopot 1994
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ABSTRACT: Proceedings of the 14th Conference of the Baltic Oceanographers, Gdynia 1984. 2, 778-784 Conference of the Baltic Oceanographers. 14 Gnydia 1984
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ABSTRACT: Proceedings of the 13th Conference of the Baltic Oceanographers, August 24-27, 1982. 1, 162-168 Conference of the Baltic Oceanographers. 13 Helsinki 1982 Publishing place: Helsinki
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ABSTRACT: Proceedings of the 13th Conference of the Baltic Oceanographers, August 24-27, 1982. 2, 439-457 Conference of the Baltic Oceanographers. 13 Helsinki 1982 Publishing place: Helsinki
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P P Povinec,
M K Pham,
J A Sanchez-Cabeza,
G. Barci-Funel, R. Bojanowski,
T. Boshkova,
W C Burnett,
F. Carvalho,
B. Chapeyron,
I. L. Cunha, [......],
B Oregioni,
G Le Petit,
H. B. L. Pettersson,
A. Reineking,
P. A. Smedley,
A. Suckow,
T. D. B. van der Struijs,
P. I. Voors,
K. Yoshimizu,
E Wyse
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ABSTRACT: Author Posting. © Springer, 2007. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Journal of Radioanalytical and Nuclear Chemistry 273 (2007): 383-393, doi:10.1007/s10967-007-6898-4. A reference material designed for the determination of anthropogenic and natural radionuclides in sediment, IAEA-384 (Fangataufa Lagoon sediment), is described and the results of certification are presented. The material has been certified for 8 radionuclides (40K, 60Co, 155Eu, 230Th, 238U, 238Pu, 239+240Pu and 241Am). Information values are given for 12 radionuclides (90Sr, 137Cs, 210Pb (210Po), 226Ra, 228Ra, 232Th, 234U, 235U, 239Pu, 240Pu and 241Pu). Less reported radionuclides include 228Th, 236U, 239Np and 242Pu. The reference material may be used for quality management of radioanalytical laboratories engaged in the analysis of radionuclides in the environment, as well as for the development and validation of analytical methods and for training purposes. The material is available from IAEA in 100 g units.
