RT Journal Article
T1 Improving the relationship between soil characteristics and metal bioavailability by using reactive fractions of soil parameters in calcareous soils
A1 Santiago Martín, Ana De
A1 Oort, Folkert van
A1 González Huecas, Concepción
A1 Quintana Nieto, José Ramón
A1 López Lafuente, Antonio Leovigildo
A1 Lamy, Isabelle
A2 Wiley, 
AB The contribution of the nature instead of the total content of soil parameters relevant to metal bioavailability in lettuce was tested using a series of low‐polluted Mediterranean agricultural calcareous soils offering natural gradients in the content and composition of carbonate, organic, and oxide fractions. Two datasets were compared by canonical ordination based on redundancy analysis: total concentrations (TC dataset) of main soil parameters (constituents, phases, or elements) involved in metal retention and bioavailability; and chemically defined reactive fractions of these parameters (RF dataset). The metal bioavailability patterns were satisfactorily explained only when the RF dataset was used, and the results showed that the proportion of crystalline Fe oxides, dissolved organic C, diethylene‐triamine‐pentaacetic acid (DTPA)‐extractable Cu and Zn, and a labile organic pool accounted for 76% of the variance. In addition, 2 multipollution scenarios by metal spiking were tested that showed better relationships with the RF dataset than with the TC dataset (up to 17% more) and new reactive fractions involved. For Mediterranean calcareous soils, the use of reactive pools of soil parameters rather than their total contents improved the relationships between soil constituents and metal bioavailability. Such pool determinations should be systematically included in studies dealing with bioavailability or risk assessment.
PB Wiley Online Library
SN 0730-7268
SN 1552-8618
YR 2014
FD 2014-11-12
LK https://hdl.handle.net/20.500.14352/104346
UL https://hdl.handle.net/20.500.14352/104346
LA eng
NO Grupos de Investigación UCM
NO Comunidad Autónoma de Madrid
DS Docta Complutense
RD 10 abr 2025