Influence of soil properties on the bioaccumulation and effects of arsenic in the earthworm Eisenia andrei

被引:39
作者
Romero-Freire, A. [1 ,3 ]
Martin Peinado, F. J. [1 ]
Dez Ortiz, M. [2 ]
van Gestel, C. A. M. [3 ]
机构
[1] Univ Granada, Dept Soil Sci, Granada 18002, Spain
[2] LEITAT Technol Ctr, R&D Dept, NanoHlth & Safety Grp, Barcelona 08225, Spain
[3] Vrije Univ Amsterdam, Fac Earth & Life Sci, Dept Ecol Sci, NL-1081 HV Amsterdam, Netherlands
关键词
Arsenic; Bioavailability; Soil properties; Earthworm accumulation; Toxicity; ARTIFICIAL SOIL; HEAVY-METALS; BIOCHEMICAL RESPONSES; CONTAMINATED SOILS; TOXICITY; TERM; BIOACCESSIBILITY; BIOAVAILABILITY; ACCUMULATION; MOLYBDENUM;
D O I
10.1007/s11356-015-4659-4
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study aimed at assessing the influence of soil properties on the uptake and toxicity effects of arsenic in the earthworm Eisenia andrei exposed for 4 weeks to seven natural soils spiked with different arsenic concentrations. Water-soluble soil concentrations (AsW) and internal As concentrations in the earthworms (AsE) were greatly different between soils. These two variables were highly correlated and were key factors in earthworm toxicity response. AsW was explained by some soil properties, such as the pH, calcium carbonate content, ionic strength, texture or oxide forms. Toxicity showed a clear variation between soils, in some cases without achieving 50 % adverse effect at the highest As concentration added (600 mg kg(-1)). Nevertheless, soil properties did not show, in general, a high relation with studied toxicity endpoints, although the high correlation with AsW could greatly reduce indirectly As bioavailability and toxicity risk for earthworms. Obtained results suggest that soil properties should be part of the criteria to establishing thresholds for contaminated soils because they will be key in controlling As availability and thus result in different degrees of toxicity.
引用
收藏
页码:15016 / 15028
页数:13
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