The effect of environmentally relevant conditions on PVP stabilised gold nanoparticles

A. Hitchman; G.H. Sambrook Smith; Y. Ju-Nam; J.R. Lead; M. Sterling

doi:10.1016/j.chemosphere.2012.07.041

The effect of environmentally relevant conditions on PVP stabilised gold nanoparticles

A. Hitchman, G.H. Sambrook Smith, Y. Ju-Nam, J.R. Lead, M. Sterling

Research output: Contribution to journal › Article › peer-review

58 Citations (Scopus)

Abstract

Nanoparticles are a major product from the nanotechnology industry and have been shown to have a potentially large environmental exposure and hazard. In this study, sterically stabilised polyvinyl pyrrolidone (PVP) 7. nm gold nanoparticles (NPs) were produced and characterised as prepared by surface plasmon resonance (SPR), size and aggregation, morphology and surface charge. Changes in these properties with changes in environmentally relevant conditions (pH, ionic strength, Ca concentration and fulvic acid presence) were quantified. These sterically stabilised NPs showed no aggregation with changes in pH or inorganic ions, even under high (0.1. M) Ca concentrations. In addition, the presence of fulvic acid resulted in no observable changes in SPR, size, aggregation or surface chemistry, suggesting limited interaction between the PVP stabilised nanoparticles and fulvic acid. Due to the lack of aggregation and interaction, these NPs are expected to be highly mobile and potentially bioavailable in the environment.

Original language	English
Pages (from-to)	410-416
Number of pages	7
Journal	Chemosphere
Volume	90
Issue number	2
Early online date	8 Sept 2012
DOIs	https://doi.org/10.1016/j.chemosphere.2012.07.041
Publication status	Published - 1 Jan 2013

Keywords

Benzopyrans
Gold
Hydrogen-Ion Concentration
Metal Nanoparticles
Osmolar Concentration
Povidone
Surface Plasmon Resonance

Access to Document

10.1016/j.chemosphere.2012.07.041

Fluid dynamics across the interface in gravel-bed rivers: quantification and numerical modelling of flow in the hyporheic zone
Sambrook-Smith, G. (Principal Investigator) & Lead, J. (Co-Investigator)
Natural Environment Research Council
15/08/07 → 14/02/11
Project: Research Councils
Understanding the environmental behaviour and biological impacts of manufactured nanoparticles in natural aquatic systems
Lead, J. (Principal Investigator), Kendall, K. (Co-Investigator) & Preece, J. (Co-Investigator)
Natural Environment Research Council
1/04/06 → 30/11/10
Project: Research Councils

Cite this

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title = "The effect of environmentally relevant conditions on PVP stabilised gold nanoparticles",

abstract = "Nanoparticles are a major product from the nanotechnology industry and have been shown to have a potentially large environmental exposure and hazard. In this study, sterically stabilised polyvinyl pyrrolidone (PVP) 7. nm gold nanoparticles (NPs) were produced and characterised as prepared by surface plasmon resonance (SPR), size and aggregation, morphology and surface charge. Changes in these properties with changes in environmentally relevant conditions (pH, ionic strength, Ca concentration and fulvic acid presence) were quantified. These sterically stabilised NPs showed no aggregation with changes in pH or inorganic ions, even under high (0.1. M) Ca concentrations. In addition, the presence of fulvic acid resulted in no observable changes in SPR, size, aggregation or surface chemistry, suggesting limited interaction between the PVP stabilised nanoparticles and fulvic acid. Due to the lack of aggregation and interaction, these NPs are expected to be highly mobile and potentially bioavailable in the environment.",

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AU - Sambrook Smith, G.H.

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AU - Lead, J.R.

AU - Sterling, M.

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Nanoparticles are a major product from the nanotechnology industry and have been shown to have a potentially large environmental exposure and hazard. In this study, sterically stabilised polyvinyl pyrrolidone (PVP) 7. nm gold nanoparticles (NPs) were produced and characterised as prepared by surface plasmon resonance (SPR), size and aggregation, morphology and surface charge. Changes in these properties with changes in environmentally relevant conditions (pH, ionic strength, Ca concentration and fulvic acid presence) were quantified. These sterically stabilised NPs showed no aggregation with changes in pH or inorganic ions, even under high (0.1. M) Ca concentrations. In addition, the presence of fulvic acid resulted in no observable changes in SPR, size, aggregation or surface chemistry, suggesting limited interaction between the PVP stabilised nanoparticles and fulvic acid. Due to the lack of aggregation and interaction, these NPs are expected to be highly mobile and potentially bioavailable in the environment.

AB - Nanoparticles are a major product from the nanotechnology industry and have been shown to have a potentially large environmental exposure and hazard. In this study, sterically stabilised polyvinyl pyrrolidone (PVP) 7. nm gold nanoparticles (NPs) were produced and characterised as prepared by surface plasmon resonance (SPR), size and aggregation, morphology and surface charge. Changes in these properties with changes in environmentally relevant conditions (pH, ionic strength, Ca concentration and fulvic acid presence) were quantified. These sterically stabilised NPs showed no aggregation with changes in pH or inorganic ions, even under high (0.1. M) Ca concentrations. In addition, the presence of fulvic acid resulted in no observable changes in SPR, size, aggregation or surface chemistry, suggesting limited interaction between the PVP stabilised nanoparticles and fulvic acid. Due to the lack of aggregation and interaction, these NPs are expected to be highly mobile and potentially bioavailable in the environment.

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The effect of environmentally relevant conditions on PVP stabilised gold nanoparticles

Abstract

Keywords

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Projects

Fluid dynamics across the interface in gravel-bed rivers: quantification and numerical modelling of flow in the hyporheic zone

Understanding the environmental behaviour and biological impacts of manufactured nanoparticles in natural aquatic systems

Cite this