The cumulative effect of three decades of phosphogypsum amendments in reclaimed marsh soils from SW Spain: (226)Ra, (238)U and Cd contents in soils and tomato fruit

Phosphogypsum (PG), a by-product of the phosphate fertiliser industries, has been applied as soil amendment to reduce Na saturation in soils, as in the reclaimed marsh area from SW Spain, where available PG has a typical fingerprint of 710+/-40 Bq kg(-1) of (226)Ra, 165+/-15 Bq kg(-1) of (238)U and...

Full description

Saved in:
Bibliographic Details
Published in:The Science of the total environment 2008-09, Vol.403 (1-3), p.80-88
Main Authors: Abril, José-María, García-Tenorio, Rafael, Enamorado, Santiago M, Hurtado, M Dolores, Andreu, Luis, Delgado, Antonio
Format: Article
Language:English
Subjects:
Cadmium Compounds - analysis
Calcium Sulfate - analysis
Chemical Industry
Conservation of Natural Resources
Environmental Monitoring
Fertilizers - analysis
Food Contamination - analysis
Industrial Waste - analysis
Lycopersicon esculentum - chemistry
Phosphorus - analysis
Radioisotopes - analysis
Radium - analysis
Soil - analysis
Soil Pollutants, Radioactive - analysis
Spain
Uranium Compounds - analysis
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Phosphogypsum (PG), a by-product of the phosphate fertiliser industries, has been applied as soil amendment to reduce Na saturation in soils, as in the reclaimed marsh area from SW Spain, where available PG has a typical fingerprint of 710+/-40 Bq kg(-1) of (226)Ra, 165+/-15 Bq kg(-1) of (238)U and 2.8+/-0.4 mg kg(-1) of Cd. This work was focussed on the cumulative effects of PG amendments on the enrichment of these pollutants in cultivated soils and plants (Lycopersicum esculentum Mill L.) from the area studied, where PG has been applied since 1978 at recommended rates of 20-25 Mg ha(-1) every 2-3 years. A field experiment was conducted over three years to compare activity concentrations of (226)Ra ((214)Pb) and (238)U ((234)Th) in non-reclaimed soils, reclaimed soils with no additional PG application, and reclaimed soils with two additional PG applications. A non-significant effect of two PG amendments (in three years) was observed when compared with non-amended reclaimed plots. Nevertheless, a significant (p
ISSN:0048-9697
DOI:10.1016/j.scitotenv.2008.05.013