Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/22244
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Inorganic amendments to decrease metal availability in soils of recreational urban areas: limitations to their efficiency and possible drawbacks. |
Autor: | Madrid Díaz, Fernando CSIC ORCID; Díaz Barrientos, Encarnación CSIC; Florido Fernández, M.C.; Madrid, Luis CSIC | Palabras clave: | Metal availability Inorganic amendments Urban soils |
Fecha de publicación: | 27-feb-2008 | Editor: | Springer Nature | Citación: | Water, Air, and Soil Pollution 192:117–125(2008) | Resumen: | The use of three inorganic materials as potential immobilizers of metals in soils has been studied by monitoring metal availability by EDTA extraction, the Simple Bioaccessibility Extraction Test (SBET) and extraction with a mixture of organic acids (OA). The SBET test was the most suitable for risk assessment in soils of recreational areas. The materials were a 4A-type zeolite, tri-calcium phosphate and ‘slovakite’, a synthetic sorbent developed for remediation of metal-polluted soils. Adsorption/desorption experiments of metals by the isolated materials showed that all materials caused a strong retention of metals from solutions, with negligible release by dilution. When added to soils of three parks, zeolite and, to a much lesser extent, slovakite caused some increase in soil pH. Despite this increase of pH, zeolite is often the least effective amendment for decreasing metal availability estimated by any method, and even sometimes seems to cause some increase, as well as an increase of soil electrical conductivity. In contrast, slovakite causes a decrease of available metals as estimated by EDTA and SBET, but by SBET the effect seems to be steadily reduced after the first samplings, so that after 300 days the metals extracted by this method are very similar to the data for the blanks. Despite the differences in pseudo-total metal contents, few differences are noticeable among parks. In general, these amendments are scarcely efficient in the case of neutral urban soils like those studied here. Other techniques are needed for controlling and, eventually, decreasing metal pollution hazard in soils of recreational areas. | Versión del editor: | http://www.springerlink.com/content/e16745w88p013857 | URI: | http://hdl.handle.net/10261/22244 | DOI: | 10.1007/s11270-008-9639-6 | ISSN: | 0049-6979 | E-ISSN: | 1573-2932 |
Aparece en las colecciones: | (IRNAS) Artículos |
Mostrar el registro completo
CORE Recommender
SCOPUSTM
Citations
16
checked on 25-abr-2024
WEB OF SCIENCETM
Citations
13
checked on 23-feb-2024
Page view(s)
339
checked on 22-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.