Toxicity screening of soils from different mine areas--a contribution to track the sensitivity and variability of Arthrobacter globiformis assay.
J Hazard Mater
; 274: 331-41, 2014 Jun 15.
Article
en En
| MEDLINE
| ID: mdl-24797906
ABSTRACT
This study used the Arthrobacter globiformis solid-contact test for assessing the quality of soils collected in areas subjected to past and present mine activities in Europe (uranium mine, Portugal) and North Africa (phosphogypsum pile, Tunisia; iron mine, Morocco). As to discriminate the influence of soils natural variability from the effect of contaminants, toxicity thresholds were derived for this test, based on the dataset of each study area. Furthermore, the test sensitivity and variability was also evaluated. As a result, soils that inhibited A. globiformis dehydrogenase activity above 45% or 50% relatively to the control, were considered to be toxic. Despite the soil metal content determined, the properties of soils seemed to influence dehydrogenase activity. Overall, the contact test provided a coherent outcome comparing to other more time-consuming and effort-demanding ecotoxicological assays. Our results strengthened the feasibility and ecological relevance of this assay, which variability was quite reduced hence suggesting its potential integration within the test battery of tier 1 of soil risk assessment schemes.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Oxidorreductasas
/
Arthrobacter
/
Contaminantes del Suelo
/
Proteínas Bacterianas
/
Metales
Tipo de estudio:
Diagnostic_studies
/
Risk_factors_studies
/
Screening_studies
País/Región como asunto:
Africa
/
Europa
Idioma:
En
Revista:
J Hazard Mater
Asunto de la revista:
SAUDE AMBIENTAL
Año:
2014
Tipo del documento:
Article