Influence of soil porewater properties on the fate and toxicity of silver nanoparticles to Caenorhabditis elegans

Environmental Toxicology and Chemistry
Carolin L SchultzDavid J Spurgeon

Abstract

Engineered nanoparticles (NPs) entering the environment are subject to various transformations that in turn influence how particles are presented to, and taken up by, organisms. To understand the effect of soil properties on the toxicity of nanosilver to Caenorhabditis elegans, toxicity assays were performed in porewater extracts from natural soils with varying organic matter content and pH using 3-8 nm unfunctionalized silver (Ag 3-8Unf), 52-nm polyvinylpyrrolidone (PVP)-coated Ag NPs (Ag 52PVP), and AgNO3 as ionic Ag. Effects on NP agglomeration and stability were investigated using ultraviolet-visible (UV-vis) spectroscopy and asymmetric flow field-flow fractionation (AF4); Ag+ showed greater overall toxicity than nanosilver, with little difference between the NP types. Increasing soil organic matter content significantly decreased the toxicity of Ag 3-8Unf, whereas it increased that of AgNO3 . The toxicity of all Ag treatments significantly decreased with increasing porewater pH. Dissolution of both NPs in the porewater extracts was too low to have contributed to their observed toxic effects. The UV-vis spectroscopy revealed low levels of agglomeration/aggregation independent of soil properties for Ag 3-8Unf, whereas higher...Continue Reading

References

Oct 24, 2009·Environmental Science & Technology·Julia FabregaJamie R Lead
Feb 16, 2010·Environmental Science & Technology·Arturo A KellerZhaoxia Ji
Dec 1, 2010·Environmental Science and Pollution Research International·Sonia ManzoGirolamo Di Francia
Jan 14, 2011·Ecotoxicology·W A Shoults-WilsonJason M Unrine
Mar 17, 2011·Environmental Science & Technology·George R AikenJoseph N Ryan
Oct 25, 2011·Environmental Toxicology and Chemistry·Julianne McLaughlin, Jean-Claude J Bonzongo
Feb 22, 2012·Environmental Science & Technology·Clément LevardGordon E Brown
May 11, 2012·Environmental Toxicology and Chemistry·Paula S TourinhoSusana Loureiro
Jun 14, 2013·Environmental Toxicology and Chemistry·Pauline L Waalewijn-KoolCornelis A M van Gestel
Aug 17, 2014·Chemosphere·Renato GrilloLeonardo F Fraceto
Aug 21, 2014·Ecotoxicology·Pauline L Waalewijn-KoolCornelis A M van Gestel
Sep 15, 2014·Environmental Pollution·Masoud M ArdestaniCornelis A M van Gestel
Feb 11, 2015·Environmental Pollution·Lara SettimioScott Smith
May 20, 2015·Environmental Toxicology and Chemistry·Kate A LangdonGraham Merrington
Jun 6, 2015·Environmental Science & Technology·Ian L GunsolusChristy L Haynes
Aug 15, 2015·Environmental Toxicology and Chemistry·Nadine S TaylorJames C McGeer
Sep 12, 2015·Environmental Science & Technology·Chuanjia JiangHeileen Hsu-Kim

❮ Previous
Next ❯

Citations

Sep 19, 2020·Environmental Science and Pollution Research International·Totan AdakPrakash Chandra Rath
Mar 5, 2021·Environmental Toxicology and Chemistry·E LahiveA Green Etxabe
May 18, 2021·Environmental Science & Technology·Xiaoxuan WangXingmao Ma

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.