Detection of engineered nanoparticles in aquatic environments: current status and challenges in enrichment, separation, and analysis

2019 ◽  
Vol 6 (3) ◽  
pp. 709-735 ◽  
Author(s):  
Ming Zhang ◽  
Junhan Yang ◽  
Zhongxia Cai ◽  
Yudong Feng ◽  
Yafeng Wang ◽  
...  
Keyword(s):  
Engineered Nanoparticles ◽  
Current Status ◽  
Aquatic Environments

The development of enrichment–separation–analysis technologies is the cornerstone of accurately detecting, effectively monitoring, and controlling ENPs in aquatic environments.

Microplastic Exposure Assessment in Aquatic Environments: Learning from Similarities and Differences to Engineered Nanoparticles

2017 ◽  
Vol 51 (5) ◽  
pp. 2499-2507 ◽  
Author(s):  
Thorsten Hüffer ◽  
Antonia Praetorius ◽  
Stephan Wagner ◽  
Frank von der Kammer ◽  
Thilo Hofmann
Keyword(s):  
Exposure Assessment ◽  
Engineered Nanoparticles ◽  
Aquatic Environments ◽  
Similarities And Differences

scholarly journals A network perspective reveals decreasing material diversity in studies on nanoparticle interactions with dissolved organic matter

2017 ◽  
Vol 114 (10) ◽  
pp. E1756-E1765 ◽  
Author(s):  
Nicole Sani-Kast ◽  
Jérôme Labille ◽  
Patrick Ollivier ◽  
Danielle Slomberg ◽  
Konrad Hungerbühler ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Engineered Nanoparticles ◽  
Experimental Results ◽  
Aquatic Environments ◽  
Particle Coating ◽  
Nanoparticle Interactions ◽  
Aliphatic Carbon ◽  
Extensive Body ◽  
Micrometer Scale

Dissolved organic matter (DOM) strongly influences the properties and fate of engineered nanoparticles (ENPs) in aquatic environments. There is an extensive body of experiments on interactions between DOM and ENPs and also larger particles. [We denote particles on the nano- and micrometer scale as particulate matter (PM).] However, the experimental results are very heterogeneous, and a general mechanistic understanding of DOM–PM interactions is still missing. In this situation, recent reviews have called to expand the range of DOM and ENPs studied. Therefore, our work focuses on the diversity of the DOM and PM types investigated. Because the experimental results reported in the literature are highly disparate and difficult to structure, a new format of organizing, visualizing, and interpreting the results is needed. To this end, we perform a network analysis of 951 experimental results on DOM–PM interactions, which enabled us to analyze and quantify the diversity of the materials investigated. The diversity of the DOM–PM combinations studied has mostly been decreasing over the last 25 y, which is driven by an increasing focus on several frequently investigated materials, such as DOM isolated from fresh water, DOM in whole-water samples, and TiO2and silver PM. Furthermore, there is an underrepresentation of studies into the effect of particle coating on PM–DOM interactions. Finally, it is of great importance that the properties of DOM used in experiments with PM, in particular the molecular weight and the content of aromatic and aliphatic carbon, are reported more comprehensively and systematically.

Biochemical Responses in Aquatic Plants as Markers of Environmental Contamination

2001 ◽  
Vol 29 (3) ◽  
pp. 277-282 ◽  
Author(s):  
Pirjo Lindström-Seppä ◽  
Katalin Urban ◽  
Ulla Honkalampi-Hämäläinen ◽  
Sashwati Roy
Keyword(s):  
Oxidative Stress ◽  
Stress Responses ◽  
Short Review ◽  
Organic Pollution ◽  
Basic Knowledge ◽  
Current Status ◽  
Aquatic Environments ◽  
Biochemical Responses ◽  
Oxidative Stress Responses ◽  
And Oxidative Stress

This short review gives several examples of the current status of xenobiotic bio-transformation reactions and oxidative stress responses in plants as biomarkers of organic pollution in aquatic environments. Based on previous basic knowledge, several biomonitoring programmes have been successfully applied during the last decade.

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

2014 ◽  
Vol 11 (4) ◽  
pp. 351 ◽  
Author(s):  
Manuel D. Montaño ◽  
Gregory V. Lowry ◽  
Frank von der Kammer ◽  
Julie Blue ◽  
James F. Ranville
Keyword(s):  
Environmental Samples ◽  
Accurate Determination ◽  
Engineered Nanoparticles ◽  
Engineered Nanomaterials ◽  
Current Status ◽  
Environmental Matrices ◽  
New Techniques ◽  
Unique Challenge ◽  
High Background ◽  
Naturally Occurring

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.

scholarly journals Strategies for determining heteroaggregation attachment efficiencies of engineered nanoparticles in aquatic environments

2020 ◽  
Vol 7 (2) ◽  
pp. 351-367 ◽  
Author(s):  
Antonia Praetorius ◽  
Elena Badetti ◽  
Andrea Brunelli ◽  
Arnaud Clavier ◽  
Julián Alberto Gallego-Urrea ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
Engineered Nanoparticles ◽  
Theory And Practice ◽  
Aquatic Environments ◽  
Suspended Particulate

Heteroaggregation of engineered nanoparticles with suspended particulate matter in theory and practice: a roadmap for understanding and determining attachment efficiencies.

Behavior of engineered nanoparticles in aquatic environmental samples: Current status and challenges

2021 ◽  
pp. 148560
Author(s):  
Jejal Reddy Bathi ◽  
Faegheh Moazeni ◽  
Venkata K.K. Upadhyayula ◽  
Indranil Chowdhury ◽  
Soubantika Palchoudhury ◽  
...  
Keyword(s):  
Environmental Samples ◽  
Engineered Nanoparticles ◽  
Current Status

Nanotechnology: Regulatory Outlook on Nanomaterials and Nanomedicines in United States, Europe and India

2020 ◽  
Vol 7 (3) ◽  
pp. 225-236
Author(s):  
Rashi Malik ◽  
Sharvil Patil
Keyword(s):  
United States ◽  
Working Party ◽  
The United States ◽  
Engineered Nanoparticles ◽  
Current Status ◽  
Assessment Practices ◽  
The Us ◽  
Regulatory Bodies ◽  
Immense Potential ◽  
Treatment And Diagnosis

Background: The outlook on “Nano-materials, products, medicine and technology” lacks a consensus on the definition to be considered by regulatory bodies all over the world. Engineered nanoparticles, the formulated products containing nanomaterials, are not subject to any precise regulation pertaining to production, handling and labeling till now. Also, nano medicines holding an immense potential involved in treatment and diagnosis with emerging research, yet, lag behind with unnoticed concerns regarding their safety and toxicity. Therefore, a regulatory framework focused on specific guidelines for products with the application of nanotechnology is being designed for extending the immense benefits of nanomedicines to humanity. Regulatory bodies have taken the forefront in dealing with the risks associated with nanomedicines, including the United States Environment Protection Agency (EPA) and the US Food and Drug Administration (USFDA), and the Health and Consumer Protection Directorate of the European Commission (EC). Objective: The study aimed to depict the current status and suggest future perspectives of nanomedicine, by compiling the guidance of different regulatory bodies, thereby, eliminating the vagueness of nanotechnology in regulatory terms. Conclusion: Ambiguity continues to prevail considering the regulations and safety of nanomaterials. Therefore, it becomes vital to facilitate the harmonization of assessment practices for nanomaterials with a unanimous opinion. On global level, OECD and its Working Party are currently dealing with manufactured nanomaterials.

scholarly journals Behavior and Potential Impacts of Metal-Based Engineered Nanoparticles in Aquatic Environments

Nanomaterials ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 21 ◽  
Author(s):  
Cheng Peng ◽  
Wen Zhang ◽  
Haiping Gao ◽  
Yang Li ◽  
Xin Tong ◽  
...  
Keyword(s):  
Engineered Nanoparticles ◽  
Aquatic Environments
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