학술논문
Arsenic anomalies in soils and rocks occurring in the southwestern part of the Grand Duchy of Luxembourg.
Document Type
Academic Journal
Author
Claes H; Department of Environmental Sciences, KU Leuven University, Celestijnenlaan 200E, 3001 Heverlee, Belgium; Clay and Interface Mineralogy, RWTH Aachen University, Bunsenstrasse 8, 52072 Aachen, Germany. Electronic address: hannes.claes@outlook.com.; Cappuyns V; Centre for Economics and Corporate Sustainability (CEDON), KU Leuven University, Campus Brussel, Warmoesberg 26, 1000 Brussels, Belgium.; Swennen R; Department of Environmental Sciences, KU Leuven University, Celestijnenlaan 200E, 3001 Heverlee, Belgium.; Meyer R; Service géologique du Luxembourg, Rue chemin de Fer 23, 8257 Bertrange, Luxembourg.
Source
Publisher: Elsevier Country of Publication: Netherlands NLM ID: 9422688 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-3336 (Electronic) Linking ISSN: 03043894 NLM ISO Abbreviation: J Hazard Mater Subsets: PubMed not MEDLINE; MEDLINE
Subject
Language
English
Abstract
Developing legislation on soil protection, including soil quality standards, is not straightforward for areas with high geogenic metal(loid) concentrations in rocks and soils. Several rock types in southern Luxembourg (laterally continuous into Northern France and Southern Belgium) contain elevated potentially toxic element concentrations. Toarcian and Aalenian Minette ironstones, and soils on top, possess high As concentrations (average of ~100 mg/kg, maximum up to 278 mg/kg). Liassic shales show high Mo concentrations (up to 60 mg/kg). Preliminary health risk assessments suggest increased potential non-carcinogenic and carcinogenic risks. Trace metal and As anomalies, however, do not necessarily pose human and ecotoxicological risks. Petrographic, mineralogical and chemical analyses show a strong association of As to iron oxides present as ooids and rock matrix. Single extractions with CaCl 2 (0.01 mol/l) indicated the low As mobility in the Minettes. The Minette rocks with 10-40 wt% iron oxides, and a clay content of typically 10-30 wt% strongly bind As. As long as Eh and pH do not drastically change in soils, As mobility will remain low. For soils that developed on Minettes, it is advised to consider Fe-content as well as As mobility for risk assessment and development of legislation on soil protection.
(Copyright © 2021 Elsevier B.V. All rights reserved.)
(Copyright © 2021 Elsevier B.V. All rights reserved.)