Author/Editor		Sansone, U; Belli, M; Jeran, Z; Kanivets, VV; Jaćimović, Radojko; Riccardi, M; Voitsekhovitch, OV
Title		Suspended particle adhesion on aquatic plant surfaces: implications for 137Cs and 133Cs uptake rates and water-to-plant concentration rations
Type		članek
Source		J Environ Radioactiv
Vol. and No.		Letnik 59
Publication year		2002
Volume		str. 257-71
Language		eng
Abstract		Suspended particle adhesion on aquatic biota can significantly increase the apparent concentration of radionuclides above their endogenous value, leading to an overestimation of the uptake rate and concentration ratios. This study is an attempt to assess quantitatively the importance of suspended purticle adhesion on periphyton samples (biological material coating submerged surfaces). The concentrations of 137Cs and stable Cs (133Cs) in periphyton, suspended particles and filtered water were measured to determine the net water-to-periphyton concentration ratios for 137Cs and stable Cs. The net amount of 133C5 (or 137Cs) taken up by periphyton was calculated by subtracting from the total amount of 133Cs (or 137Cs) on the collected material (periphyton+inorganic particles), the 133Cs (or 137Cs) due to the inorganic particles adhering to periphyton. The mass of suspended particles adhering to the periphyton surface was calculated using scandium as an indicator of the mineral fraction of the suspended particles. Thc rclationship between the concentration ratios for 137Cs and stable Cs and suspended pai ticle adhesion on periphyton external surfaces is discussed.
Descriptors		FRESH WATER WATER POLLUTANTS, CHEMICAL PLANTS CESIUM ISOTOPES CESIUM RADIOISOTOPES SCANDIUM BIOMASS SPECTROMETRY, GAMMA NEUTRON ACTIVATION ANALYSIS UKRAINE