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Application of a plant bioassay for the evaluation of ecotoxicological risks of heavy metals in sediments affected by mining activities

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García Lorenzo, María Luz and Martínez Sánchez, Maria José and Pérez Sirvent, Carmen (2014) Application of a plant bioassay for the evaluation of ecotoxicological risks of heavy metals in sediments affected by mining activities. Journal of Soils and Sediments, 14 (10). pp. 1753-1765. ISSN 1439-0108

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Official URL: https://link.springer.com/journal/11368



Abstract

Purpose: The objective of this work was to evaluate the effectiveness of a plant bioassay (Phytotoxkit®) for screening ecotoxicological risks in sediments affected by mining activities.
Materials and methods: A total of 42 sediment samples affected by mining activities were studied, including 39 sediment samples fromthe Sierra Minera, Spain, an area affected by old extraction procedures, and three sediments from an area affected by opencast mining. These three samples were then mixed with limestone filler at 10, 20 and 30 %, providing nine stabilised samples. The total and soluble metal(loid) content (As, Cd, Cu, Fe, Pb and Zn) was determined in all samples, and the Phytotoxkit® bioassay was applied to determine the ecotoxicological effect of this procedure.
Results: and discussion The stabilised material had a neutral pH and low soluble metal(loid) concentration, similar to that of samples in which a natural attenuation process had taken place because of mixing with surrounding carbonate-rich materials. An ecotoxicological survey identified the low toxicity levels of the stabilised samples.


Item Type:Article
Additional Information:

Responsible editor: Klara Hilscherova

Uncontrolled Keywords:Ecotoxicity; Environmental risk; Immobilisation; Limestone filler; Metal(loid)s; Mining activity
Subjects:Sciences > Geology
Sciences > Geology > Geochemistry
Sciences > Geology > Petrology
ID Code:43796
Deposited On:07 Jul 2017 10:01
Last Modified:07 Jul 2017 11:05

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