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Title: A study on As, Cu, Pb and Zn (bio)availability in an abandoned mine area (São Domingos, Portugal) using chemical and ecotoxicological tools
Authors: Alvarenga, Paula
Laneiro, Cátia
Palma, Patrícia
Varennes, Amarilis de
Cunha-Queda, Cristina
Keywords: Bioaccumulation
Chemical extraction methods
Trace elements
Mine contaminated soils
Issue Date: Sep-2013
Publisher: Springer
Citation: Alvarenga, P., Laneiro, C., Palma, P., Varennes, A., Cunha-Queda, C. (2013). A study on As, Cu, Pb and Zn (bio)availability in an abandoned mine area (São Domingos, Portugal) using chemical and ecotoxicological tools. Environmental Science and Pollution Research, 20 (9), 6539-6550
Abstract: The aim of this study was to relate the results obtained by chemical methods, used to assess environmental (bio)availability, with the ecotoxic response and bioaccumulation of trace elements (TE) by the earthworm Eisenia fetida exposed to field-contaminated, metal-polluted soils from a sulphide mine. The extracting solution 0.5 M NH4CH3COO, 0.5 M CH3COOH and 0.02 M EDTA (pH 4.7), was able to predict environmental bioavailability of TE to E. fetida. However, the toxicological bioavailability could not be predicted from the results of the chemical extractions or from the bioaccumulation results: E. fetida reproduction was higher in soils where environmental bioavailability of TE and bioaccumulation values were also higher. In this study, the toxic response of the organism seemed to be more influenced by the overall nutritional status of the soil (e.g. pH, organic matter, plant nutrient availability and cation exchange capacity) than by its TE contamination. In the case of anthropogenic multi-contaminated sites, the different soil characteristics exert an important and confounding influence in the toxic response and the relationship between different bioavailable fractions cannot be easily established, emphasising the need to combine results from chemical methods with those from bioassays when evaluating the bioavailability of TE in these soils.
Peer reviewed: yes
ISSN: 1614-7499
Publisher version:
Appears in Collections:D-TCA - Artigos em revistas com peer review

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