2024-03-28T21:19:44Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/462562016-08-19T09:23:42Zcom_10261_15com_10261_6col_10261_268
DIGITAL.CSIC
author
Madejón, Paula
author
Murillo Carpio, José Manuel
author
Marañón, Teodoro
author
Cabrera, Francisco
author
Soriano, Mª Auxiliadora
funder
Junta de Andalucía
2012-02-27T11:02:09Z
2012-02-27T11:02:09Z
2003-05
The Science of the Total Environment 307(1-3): 239-257 (2003)
0048-9697
http://hdl.handle.net/10261/46256
10.1016/S0048-9697Ž02.00609-5
http://dx.doi.org/10.13039/501100011011
The failure of a tailing pond dam at the Aznalco´ llar pyrite mine (SW Spain) in April 1998 released a toxic spill
affecting approximately 4300 ha along the Agrio and Guadiamar valleys.T wo years later, we have studied yield and
concentration of mineral nutrients and trace elements in sunflower plants grown in the spill-affected soil, and in an
adjacent unaffected soil as comparison.The study has been carried out in plants at seedling (V4) and mature (R8)
stages.Shoot and root biomass of sunflower seedlings was significantly smaller in the affected soil than in the
unaffected soil, but there was no significant difference at the mature stage.Oil production was greater in the spillaffected
plants.W e have not detected any ‘fertilising’ effect caused by the acid waters of the spill on the main
nutrient (N, P and Ca) acquisition, as documented in 1998 for sunflower plants flooded by the spill.Sunflower plants
growing in the spill-affected soil reached adequate levels of nutrients.None of the trace elements measured—As, Cd,
Cu, Pb and Tl—reached levels either phytotoxic or toxic for humans or animals in seeds and the above-ground part
of the spill-affected plants.W e evaluate the potential use of sunflower plants for phytoremediation. The potential for
phytoextraction is very low; however, it may be used for soil conservation.The production of oil (usable for industrial
purposes) may add some value to this crop.
eng
openAccess
Guadiamar river
Heavy metals
Helianthus annuus
Pyrite tailings
Trace element and nutrient accumulation in sunflower plants twoyears after the Aznalcóllar mine spill
artículo
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URL
https://digital.csic.es/bitstream/10261/46256/3/Trace%20element.pdf
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URL
https://digital.csic.es/bitstream/10261/46256/5/Trace%20element.pdf.txt
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Trace element.pdf.txt