Interaction between manufactured gold nanoparticles and naturally occurring organic macromolecules

Diegoli, Sara; Manciulea, Adriana; Begum, Shakiela; Jones, I.P.; Lead, Jamie R.; Preece, Jon A.

doi:10.1016/j.scitotenv.2008.04.023

Cited by 241 publications

(154 citation statements)

References 52 publications

Supporting

Mentioning

146

Contrasting

Unclassified

Order By: Relevance

“…Because natural organic matter (NOM) is a ubiquitous constituent of natural waters, these changes in the surface properties of PW-ENM and ET-ENM by NOM should be significant, for example, because they affect agglomeration of particles [1,41,42].…”

Section: Nanoparticle Releasementioning

confidence: 99%

Potential scenarios for nanomaterial release and subsequent alteration in the environment

Nowack¹,

Ranville²,

Diamond³

et al. 2011

Enviro Toxic and Chemistry

522

353

View full text Add to dashboard Cite

Abstract-The risks associated with exposure to engineered nanomaterials (ENM) will be determined in part by the processes that control their environmental fate and transformation. These processes act not only on ENM that might be released directly into the environment, but more importantly also on ENM in consumer products and those that have been released from the product. The environmental fate and transformation are likely to differ significantly for each of these cases. The ENM released from actual direct use or from nanomaterial-containing products are much more relevant for ecotoxicological studies and risk assessment than pristine ENM. Released ENM may have a greater or lesser environmental impact than the starting materials, depending on the transformation reactions and the material. Almost nothing is known about the environmental behavior and the effects of released and transformed ENM, although these are the materials that are actually present in the environment. Further research is needed to determine whether the release and transformation processes result in a similar or more diverse set of ENM and ultimately how this affects environmental behavior. This article addresses these questions, using four hypothetical case studies that cover a wide range of ENM, their direct use or product applications, and their likely fate in the environment. Furthermore, a more definitive classification scheme for ENM should be adopted that reflects their surface condition, which is a result of both industrial and environmental processes acting on the ENM. The authors conclude that it is not possible to assess the risks associated with the use of ENM by investigating only the pristine form of the ENM, without considering alterations and transformation processes. Environ. Toxicol. Chem. 2012;31:50-59. # 2011 SETAC

show abstract

Section: Nanoparticle Releasementioning

confidence: 99%

Potential scenarios for nanomaterial release and subsequent alteration in the environment

Nowack¹,

Ranville²,

Diamond³

et al. 2011

Enviro Toxic and Chemistry

522

353

View full text Add to dashboard Cite

show abstract

“…Hence, the physicochemical properties of NMs, such as charge and hydrophobicity, can be altered by attaching these molecules to the surface, and then the adsorption behavior can affect stability and mobilization of NMs in environmental media (Table 1). The interaction of NMs with naturally occurring organic matter such as humic substances or polysaccharides results in the formation of nanoscale surface coating on the NMs (Baalousha et al, 2008) and/or the replacement of existing surface coatings (Diegoli et al, 2008). The formation of an organic surface coating on NMs alters NM surface charge (Zhang et al, 2009), aggregation (Illes et al, 2006), disaggregation (Baalousha, 2009), and sedimentation rate (Quik et al, 2010;Petosa et al, 2010).…”

Section: Fate and Behavior In The Aquatic Environmentmentioning

confidence: 99%

A Review of the Properties and Processes Determining the Fate of Engineered Nanomaterials in the Aquatic Environment

Peijnenburg

Baalousha

Chen

et al. 2015

Critical Reviews in Environmental Science and Technology

177

103

View full text Add to dashboard Cite

show abstract

“…NNP-ENP heteroaggregation). [49][50][51][52][53][54][55] NNPs interfere with the bulk chemical analysis of …”

Section: Occurrence Of Natural Nanomaterialsmentioning

confidence: 99%

Current status and future direction for examining engineered nanoparticles in natural systems

et al. 2014

View full text Add to dashboard Cite

Environmental context. The detection and characterisation of engineered nanomaterials in the environment is essential for exposure and risk assessment for this emerging class of materials. However, the ubiquitous presence of naturally occurring nanomaterials presents a unique challenge for the accurate determination of engineered nanomaterials in environmental matrices. New techniques and methodologies are being developed to overcome some of these issues by taking advantage of subtle differences in the elemental and isotopic ratios within these nanomaterials.Abstract. The increasing manufacture and implementation of engineered nanomaterials (ENMs) will continue to lead to the release of these materials into the environment. Reliably assessing the environmental exposure risk of ENMs will depend highly on the ability to quantify and characterise these materials in environmental samples. However, performing these measurements is obstructed by the complexity of environmental sample matrices, physiochemical processes altering the state of the ENM and the high background of naturally occurring nanoparticles (NNPs), which may be similar in size, shape and composition to their engineered analogues. Current analytical techniques can be implemented to overcome some of these obstacles, but the ubiquity of NNPs presents a unique challenge requiring the exploitation of properties that discriminate engineered and natural nanomaterials. To this end, new techniques are being developed that take advantage of the nature of ENMs to discern them from naturally occurring analogues. This paper reviews the current techniques utilised in the detection and characterisation of ENMs in environmental samples as well as discusses promising new approaches to overcome the high backgrounds of NNPs. Despite their occurrence in the atmosphere and soil, this review will be limited to a discussion of aqueous-based samples containing ENMs, as this environment will serve as a principal medium for the environmental dispersion of ENMs.

show abstract

Interaction between manufactured gold nanoparticles and naturally occurring organic macromolecules

Cited by 241 publications

References 52 publications

Potential scenarios for nanomaterial release and subsequent alteration in the environment

Potential scenarios for nanomaterial release and subsequent alteration in the environment

A Review of the Properties and Processes Determining the Fate of Engineered Nanomaterials in the Aquatic Environment

Current status and future direction for examining engineered nanoparticles in natural systems

Contact Info

Product

Resources

About