210Po and major ions in drainage water from soil treated with various types of fertilizers.
The levels of (210)Po, nutrients (NH(4)(+), NO(3)(-), PO(4)(3 -)) and major ions (Na(+), K(+), Mg(2 +), Ca(2 +), F(-), NO(2 -), Br(-), Cl(-), SO(4)(2 -)) were determined, by means of lysimeter experiences, in drainage waters for agricultural soils untreated and treated with different types of fertilizers (animal manure, sewage sludge and NPK synthetic fertilizer) applied at several rates. Analytical determinations were performed by using alpha -spectrometry in the case of (210)Po, or Ion Exchange liquid chromatography for the other ionic species. Statistical uni and multivariate analysis of the results shown significant differences among lixiviates according to the different fertilizer treatments. Sewage sludge and manure applications resulted in similar compositions of lixiviates with low (210)Po levels, whereas synthetic fertilizers produced higher (210)Po concentrations and different concentration patterns of ionic species when applied at or above the recommended rates. All (210)Po levels were well below the limits proposed by the 2001/928/ Euratom Recommendation. The concentrations of the rest of the ionic species, exception made from NH(4)(+) and NO(3)(-), were also below the limits proposed by Spanish regulations.
Jiménez
Fernando
F
Departamento de Química Analítica, Facultad de Ciencias, Universidad de Valladolid, Spain.
López
Raúl
R
Debán
Luis
L
Pardo
Rafael
R
García-Talavera
Marta
M
D002852:Chromatography, Ion Exchange / Q000379:methods; D005308:Fertilizers; D015999:Multivariate Analysis; D011059:Polonium / Q000032:analysis*; D013057:Spectrum Analysis / Q000379:methods; D014875:Water Pollutants, Radioactive / Q000032:analysis*
D005308:Fertilizers; D014875:Water Pollutants, Radioactive; D011059:Polonium