HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Roca, M. C. Articles by Rauret, G. Search for Related Content PubMed Articles by Roca, M. C. Articles by Rauret, G. Agricola Articles by Roca, M. C. Articles by Rauret, G.

Prediction of Cesium-134 and Strontium-85 Crop Uptake Based on Soil Properties

Departament de Biologia Vegetal. Universitat de Barcelona, Av. Diagonal 645, 08028 Barcelona, Spain.

M. Roig, J. Tent, M. Vidal^* and G. Rauret

Departament de Química Analítica. Universitat de Barcelona, Av. Diagonal 647, 08028 Barcelona, Spain.

^* Corresponding author (miquelv{at}zeus.qui.ub.es).

ABSTRACT

Nowadays, there is still the need to improve the quantification of parameters that affect radionuclide mobility. With this aim, radiocesium and radiostrontium soil-to-plant transfer was measured in lysimeters in a Calcic Luvisol, loamy soil and in a Fluvisol, loam-sandy soil, using lettuce [Lactuca sativa L. cv. Kinemontepas] and pea plants [Pisum sativum L. cv. Kelvedon Wonder]. Weighted Concentration Ratios (WCR), expressed as kg soil/kg plant, were calculated for different growth stages. Weighted Concentration Ratios were in general higher for ⁸⁵Sr than for ¹³⁴Cs, and also higher in the loam-sandy than in the loamy soil. To predict plant uptake, we evaluated a set of soil properties to define a prediction factor for the relative transfer in the two soils using cation exchange capacity (CEC) and radionuclide available fraction (f_av)for radiostrontium, and soil solution composition, solid-liquid distribution coefficient, and radionuclide available fraction for radiocesium. The ratios of WCR in the loam-sandy and loamy soil were compared with the prediction factor. There was good agreement in lettuce for ⁸⁵Sr (ratio of WCR was 5.4 for seedling and 3.9 for commercial samples, whereas prediction factor was 3.1) and for ¹³⁴Cs (ratio of WCR was 5.1 for seedling and 5.5 for commercial samples, the prediction factor being 5.1), although for pea only the relative root uptake of radiocesium in seedling pea was well predicted (the ratio of WCR was 8.8, the prediction factor being 9.1). These soil parameters improved former predictions based solely on the f_av, although factors depending on plant physiology should be better evaluated.

This article has been cited by other articles:

				M. Pueyo, J. Sastre, E. Hernandez, M. Vidal, J. F. Lopez-Sanchez, and G. Rauret Prediction of Trace Element Mobility in Contaminated Soils by Sequential Extraction J. Environ. Qual., November 1, 2003; 32(6): 2054 - 2066. [Abstract] [Full Text] [PDF]

				Y-G. Zhu and E. Smolders Plant uptake of radiocaesium: a review of mechanisms, regulation and application J. Exp. Bot., October 1, 2000; 51(351): 1635 - 1645. [Abstract] [Full Text] [PDF]