137Cs and 90Sr in water and suspended particulate matter of the Dnieper River-Reservoirs System (Ukraine)

Sansone, U.; Belli, M.; Voitsekovitch, O; Kanivets, Volodymyr

doi:10.1016/0048-9697(96)05120-0

Cited by 47 publications

(26 citation statements)

References 4 publications

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“…The averaged value was 47 ± 1 % in the early period and 84 ± 7 % for samples in the last period. Similar results were reported for rivers in Ukraine after the accident at Chernobyl in 1986 [15].…”

Section: Radioactivity Of 134 Cs and 137 Cssupporting

confidence: 91%

“…The plots of scattered from the regression line, as portrayed in Therefore, the decrease in the percentage of particulate phase of 134 Cs and 137 Cs suggests that the amount of dissolved radiocesium supplied from the watershed decreases with increasing time after the Fukushima Dai-ichi NPP accident. This inference is consistent with previously reported phenomena in the Chernobyl area [15]. However, after December 2011, total radioactivity and the particulate percentage depend on the concentration of suspended solids in river waters, as portrayed in Fig.…”

Section: Radioactivity Of 134 Cs and 137 Cssupporting

confidence: 90%

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Migration behavior of 134Cs and 137Cs in the Niida River water in Fukushima Prefecture, Japan during 2011–2012

Nagao

Kanamori

Ochiai

et al. 2014

J Radioanal Nucl Chem

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Total radioactivity of 137 Cs in water samples from the Niida River was 0.025-4.18 Bq/L during May 2011-November 2012. Higher radioactivity was found during May-September 2011 and after a high flow condition caused by a rain event in 2012. The particulate phase of 134 Cs and 137 Cs was 47-48 % for May-September 2011, 75-93 % in normal flow conditions and 86-91 % in high flow conditions after December 2011. These results indicate that the supply of 134 Cs and 137 Cs from the watershed differs from the early stage up to September 2011 and from the last stage.

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Section: Radioactivity Of 134 Cs and 137 Cssupporting

confidence: 91%

Section: Radioactivity Of 134 Cs and 137 Cssupporting

confidence: 90%

Migration behavior of 134Cs and 137Cs in the Niida River water in Fukushima Prefecture, Japan during 2011–2012

Nagao

Kanamori

Ochiai

et al. 2014

J Radioanal Nucl Chem

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“…Its migration in the basins of the Yenisey River and those of the Dnieper and its tributaries, in particular, was investigated in detail after the Chernobyl accident Sansone et al 1996).…”

Section: Introductionmentioning

confidence: 99%

Distribution of artificial radioisotopes in granulometric and organic fractions of alluvial soils downstream from the Krasnoyarsk Mining and Chemical Combine (KMCC), Russia

2015

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Purpose The purpose of this study was to compare the distribution of the most significant medium and long-lived radioisotopes, i.e., 60 Co, 137 Cs, and 152 Eu, in granulometric and organic fractions of alluvial soils downstream from the Krasnoyarsk Mining and Chemical Combine (KMCC), Russia, to reveal natural patterns of their behavior and accumulation. Materials and methods Soil samples collected at different elevations and depths in a floodplain of the Yenisey River downstream from the KMCC (20-250 km) were subjected to granulometric analysis by dry screening and a modified Petelin method. Fractions <0.05 mm were collected by a pipette method. Radionuclide activity in the different soil layers and in their fractions was determined using a spectrometer equipped with an HPGe detector. Concentration of total C (Ctot) and C of carbonates (Ccarb) was determined using a CHN analyzer before and after elimination of carbonates, organic C (Corg) being calculated as the difference between the obtained values. Organic fractions were separated by saturation of the air-dry sample with 0.1 M NaOH and further precipitation of humic acid from filtrate by 1 M HCl at pH 1. The separation resulted in three fractions of the fulvic acids, humic acids, and the residue containing the denuded mineral phase and the refractory organic residue. The selected bulk samples and fractions were analyzed for radionuclide activity. Results and discussion Based on earlier results, the distribution of the pelite (<0.01 mm) and aleurite (0.01-0.1 mm) fractions in alluvium and soil samples have been analyzed to evaluate the grain-size contribution to radionuclide fixation. A positive correlation between radionuclide activity and the portion of pelite fraction was established for 60 Co and 152 Eu, while 137 Cs accumulation was not related with this fraction. In organic matter (OM) extracts, more than 90 % of 137 Cs, at proportions similar to those attributable to 238 Th and 40 K, were associated with the residue fraction, while 72 % of 152 Eu and 46 % of 60 Co were found in the mobile fraction of the low molecular fulvic acids. In successive layers of the soil vertical profile, approximately 94 % of the 152 Eu variation may be explained by a linear model with Corg and Ccarb values as independent variables. Conclusions Different associations of 137 Cs, 60 Co, and 152 Eu with particulate and organic fractions in river sediments and floodplain soils could be explained by the dominating discharge form (water soluble or particulate), affinity to organic substances of different mobility, sorption by minerals and their aggregates, and chemisorption.

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“…These methods have been compared from the standpoints of collection efficiency and validity of analytical results [12][13][14]. Filtration is a common procedure, often conducted after the sampled water is brought to the laboratory [15,16]. However, this method is usually timeintensive because of flux decline due to biofilm formation by natural organic matter [17,18].…”

Section: Introductionmentioning

confidence: 99%

Non-destructive detection of particulate radiocesium using a non-woven fabric cartridge filter for rapid preprocessing

Tsuji

Kondo²,

Kawashima³

et al. 2014

J Radioanal Nucl Chem

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A nondestructive method for monitoring 137 Cs in particulate matter in natural water was developed, to expedite preprocessing time. Suspended solids collected on a nonwoven fabric cartridge filter were directly analyzed for 137 Cs without preprocessing; a formula was determined for geometric correction of the radiation source in the cartridge. The ratio of the 137 Cs radioactivity in the cartridge determined by the nondestructive method to the actual 137 Cs radioactivity determined by a destructive method was estimated to be 1.14 for 44 water samples, and this value was also valid for various experimental conditions and soils with various particle size distributions.

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137Cs and 90Sr in water and suspended particulate matter of the Dnieper River-Reservoirs System (Ukraine)

Cited by 47 publications

References 4 publications

Migration behavior of 134Cs and 137Cs in the Niida River water in Fukushima Prefecture, Japan during 2011–2012

Migration behavior of 134Cs and 137Cs in the Niida River water in Fukushima Prefecture, Japan during 2011–2012

Distribution of artificial radioisotopes in granulometric and organic fractions of alluvial soils downstream from the Krasnoyarsk Mining and Chemical Combine (KMCC), Russia

Non-destructive detection of particulate radiocesium using a non-woven fabric cartridge filter for rapid preprocessing

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