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The effect of soil properties on the toxicity and bioaccumulation of Ag nanoparticles and Ag ions in Enchytraeus crypticus.
Ecotoxicol Environ Saf. 2017 Oct; 144:330-337.EE

Abstract

Standard natural Lufa soils (2.2, 2.3 and 5M) with different organic carbon contents (0.67-1.61%) and pHCaCl2 (5.5-7.3) were spiked with ionic Ag (AgNO3) and polyvinyl pyrrolidone (AgNP-PVP) and citrate (AgNP-Cit) coated Ag nanoparticles (NPs). Enchytraeus crypticus were exposed for 21 days to assess effects on survival and reproduction. Soil, pore water and animals were analyzed for Ag. AgNP-Cit had a strong increasing effect on soil pH, leading to high enchytraeid mortality at concentrations higher than 60-100mg Ag/kg dry soil which made it impossible to determine the influence of soil properties on its toxicity. LC50s were lower for AgNO3 than for AgNP-PVP (92-112 and 335-425mg Ag/kg dry soil, respectively) and were not affected by soil properties. AgNO3 and AgNP-PVP had comparable reproductive toxicity with EC50s of 26.9-75.2 and 28.2-92.3mg Ag/kg dry soil, respectively; toxicity linearly increased with decreasing organic carbon content of the soils but did not show a clear effect of soil pH. Ag uptake in the enchytraeids was higher at higher organic carbon content, but could not explain differences in toxicity between soils. This study indicates that the bioavailability of both ionic and nanoparticulate Ag is mainly affected by soil organic carbon, with little effect of soil pH.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Topuz E
Department of Ecological Science, Faculty of Earth and Life Sciences, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands; Department of Environmental Engineering, Istanbul Technical University, Maslak, Istanbul 34469, Turkey.
van Gestel CAM
Department of Ecological Science, Faculty of Earth and Life Sciences, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands. Electronic address: kees.van.gestel@vu.nl.

MeSH

AnimalsBiological AvailabilityCitric AcidDose-Response Relationship, DrugIonsLethal Dose 50Metal NanoparticlesOligochaetaPovidoneReproductionSilverSilver NitrateSoilSoil Pollutants

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28646738

Citation

Topuz, Emel, and Cornelis A M. van Gestel. "The Effect of Soil Properties On the Toxicity and Bioaccumulation of Ag Nanoparticles and Ag Ions in Enchytraeus Crypticus." Ecotoxicology and Environmental Safety, vol. 144, 2017, pp. 330-337.
Topuz E, van Gestel CAM. The effect of soil properties on the toxicity and bioaccumulation of Ag nanoparticles and Ag ions in Enchytraeus crypticus. Ecotoxicol Environ Saf. 2017;144:330-337.
Topuz, E., & van Gestel, C. A. M. (2017). The effect of soil properties on the toxicity and bioaccumulation of Ag nanoparticles and Ag ions in Enchytraeus crypticus. Ecotoxicology and Environmental Safety, 144, 330-337. https://doi.org/10.1016/j.ecoenv.2017.06.037
Topuz E, van Gestel CAM. The Effect of Soil Properties On the Toxicity and Bioaccumulation of Ag Nanoparticles and Ag Ions in Enchytraeus Crypticus. Ecotoxicol Environ Saf. 2017;144:330-337. PubMed PMID: 28646738.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effect of soil properties on the toxicity and bioaccumulation of Ag nanoparticles and Ag ions in Enchytraeus crypticus. AU - Topuz,Emel, AU - van Gestel,Cornelis A M, Y1 - 2017/06/22/ PY - 2017/1/5/received PY - 2017/6/8/revised PY - 2017/6/12/accepted PY - 2017/6/25/pubmed PY - 2017/11/29/medline PY - 2017/6/25/entrez KW - Bioaccumulation KW - Organic matter KW - Pore water KW - Reproduction KW - pH SP - 330 EP - 337 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 144 N2 - Standard natural Lufa soils (2.2, 2.3 and 5M) with different organic carbon contents (0.67-1.61%) and pHCaCl2 (5.5-7.3) were spiked with ionic Ag (AgNO3) and polyvinyl pyrrolidone (AgNP-PVP) and citrate (AgNP-Cit) coated Ag nanoparticles (NPs). Enchytraeus crypticus were exposed for 21 days to assess effects on survival and reproduction. Soil, pore water and animals were analyzed for Ag. AgNP-Cit had a strong increasing effect on soil pH, leading to high enchytraeid mortality at concentrations higher than 60-100mg Ag/kg dry soil which made it impossible to determine the influence of soil properties on its toxicity. LC50s were lower for AgNO3 than for AgNP-PVP (92-112 and 335-425mg Ag/kg dry soil, respectively) and were not affected by soil properties. AgNO3 and AgNP-PVP had comparable reproductive toxicity with EC50s of 26.9-75.2 and 28.2-92.3mg Ag/kg dry soil, respectively; toxicity linearly increased with decreasing organic carbon content of the soils but did not show a clear effect of soil pH. Ag uptake in the enchytraeids was higher at higher organic carbon content, but could not explain differences in toxicity between soils. This study indicates that the bioavailability of both ionic and nanoparticulate Ag is mainly affected by soil organic carbon, with little effect of soil pH. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/28646738/The_effect_of_soil_properties_on_the_toxicity_and_bioaccumulation_of_Ag_nanoparticles_and_Ag_ions_in_Enchytraeus_crypticus_ DB - PRIME DP - Unbound Medicine ER -