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Wang Y, Chen X. Aggregation behavior of polyethylene microplastics in the nearshore environment: The role of particle size, environmental condition and turbulent flow. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 901:165941. [PMID: 37536586 DOI: 10.1016/j.scitotenv.2023.165941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/29/2023] [Accepted: 07/29/2023] [Indexed: 08/05/2023]
Abstract
Estuary and coastal waters are hotspot areas for microplastics (MPs) pollution. MPs of varying sizes converge in this complex nearshore environment. Aggregation is an important process that affects the transport and fate of MPs in the aqueous environment. Nevertheless, the influence of different factors on the aggregation behavior and the aggregates structure of MPs is unclear. In this study, the aggregation behavior and the aggregates structure of polyethylene microplastics (PEs) of different sizes under the impact of nearshore environmental conditions (i.e., salinity gradient, dissolved organic matter-DOM, turbulent flow) were investigated. The results show that particle size was the dominant factor affecting the stability of PEs in the aqueous environment, and the critical coagulation concentration (CCC) of PEs shifts to the right with increasing size. It was also found that the size of PEs stable aggregates is negatively correlated with the turbulent kinetic energy dissipation rate. The particle size of PEs can significantly affect the fractal dimension (FD) of stable aggregates, and the smaller the particle size, the more compact the aggregates formed. Moreover, salinity and DOM control the size and FD of PEs stable aggregates through different mechanisms. The findings of this study will be helpful for the prediction of the transport and fate of MPs in the aqueous environment.
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Affiliation(s)
- Yi Wang
- Fujian Provincial Engineering Research Center for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou 350117, China; School of Geographical Sciences, School of Carbon Neutrality Future Technology, Fujian Normal University, Fuzhou 350117, China; State Key Laboratory for Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province, Fujian Normal University, Fuzhou 350117, China
| | - Xingwei Chen
- Fujian Provincial Engineering Research Center for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou 350117, China; School of Geographical Sciences, School of Carbon Neutrality Future Technology, Fujian Normal University, Fuzhou 350117, China; State Key Laboratory for Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province, Fujian Normal University, Fuzhou 350117, China.
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2
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Harrison DM, Briffa SM, Mazzonello A, Valsami-Jones E. A Review of the Aquatic Environmental Transformations of Engineered Nanomaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2098. [PMID: 37513109 PMCID: PMC10385082 DOI: 10.3390/nano13142098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/04/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023]
Abstract
Once released into the environment, engineered nanomaterials (ENMs) undergo complex interactions and transformations that determine their fate, exposure concentration, form, and likely impact on biota. Transformations are physical, chemical, or biological changes that occur to the ENM or the ENM coating. Over time, these transformations have an impact on their behaviour and properties. The interactions and transformations of ENMs in the environment depend on their pristine physical and chemical characteristics and the environmental or biological compartment into which they are released. The uniqueness of each ENM property or lifecycle results in a great deal of complexity. Even small changes may have a significant impact on their potential transformations. This review outlines the key influences and outcomes of ENM evolution pathways in aquatic environments and provides an assessment of potential environmental transformations, focusing on key chemical, physical, and biological processes. By obtaining a comprehensive understanding of the potential environmental transformations that nanomaterials can undergo, more realistic models of their probable environmental behaviour and potential impact can be developed. This will, in turn, be crucial in supporting regulatory bodies in their efforts to develop environmental policy in the field of nanotechnology.
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Affiliation(s)
- Daniel Mark Harrison
- School of Geography, Earth and Environmental Science, University of Birmingham, Birmingham B15 2TT, UK
| | - Sophie M Briffa
- School of Geography, Earth and Environmental Science, University of Birmingham, Birmingham B15 2TT, UK
- Department of Metallurgy and Materials Engineering, Faculty of Engineering, University of Malta, MSD 2080 Msida, Malta
| | - Antonino Mazzonello
- Department of Metallurgy and Materials Engineering, Faculty of Engineering, University of Malta, MSD 2080 Msida, Malta
| | - Eugenia Valsami-Jones
- School of Geography, Earth and Environmental Science, University of Birmingham, Birmingham B15 2TT, UK
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3
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Yalezo N, Musee N. Meta-analysis of engineered nanoparticles dynamic aggregation in freshwater-like systems using machine learning techniques. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 337:117739. [PMID: 36934506 DOI: 10.1016/j.jenvman.2023.117739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/17/2023] [Accepted: 03/12/2023] [Indexed: 06/18/2023]
Abstract
Predictive algorithms for exposure characterization of engineered nanoparticles (ENPs) in the ecosystems are essential to improve the development of robust nano-safety frameworks. Here, machine learning (ML) techniques were utilised for data mining and prediction of the dynamic aggregation transformation process in aqueous environments using case studies of nZnO and nTiO2. Supervised ML models using input variables of natural organic matter, ionic strength, size, and ENPs concentration showed poor prediction performance based on statistical metric values of root mean square error (RMSE), mean absolute error (MAE), coefficient of determination (R2), and Nash-Sutcliffe efficiency (NSE) for both types of ENP. On the contrary, algorithms developed using model input parameters of zeta potential, pH, and time had good generalisation and high prediction accuracy. Among the five developed ML algorithms, random forest regression, support vector regression, and artificial neural network generated good prediction accuracy for both data sets. Therefore, the use of ML can be valuable in the development of robust nano-safety frameworks to optimise societal benefits, and for proactive long-term ecological protection.
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Affiliation(s)
- Ntsikelelo Yalezo
- Emerging Contaminants Ecological and Risk Assessment (ECERA) Group, Department of Chemical Engineering, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa
| | - Ndeke Musee
- Emerging Contaminants Ecological and Risk Assessment (ECERA) Group, Department of Chemical Engineering, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa.
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4
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Kuznetsova OV, Keppler BK, Timerbaev AR. Seawater analysis of engineered nanoparticles using ICP-MS-based technology: Addressing challenges with the development of reliable monitoring strategy. Talanta 2023; 252:123846. [DOI: 10.1016/j.talanta.2022.123846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/03/2022] [Accepted: 08/12/2022] [Indexed: 11/29/2022]
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5
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Swirog M, Mikolajczyk A, Jagiello K, Jänes J, Tämm K, Puzyn T. Predicting electrophoretic mobility of TiO 2, ZnO, and CeO 2 nanoparticles in natural waters: The importance of environment descriptors in nanoinformatics models. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 840:156572. [PMID: 35710003 DOI: 10.1016/j.scitotenv.2022.156572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 05/16/2022] [Accepted: 06/05/2022] [Indexed: 06/15/2023]
Abstract
Natural and engineered nanoparticles (NPs) entering the environment are influenced by many physicochemical processes and show various behavior in different systems (e.g., natural waters showing different characteristics). Determining the physicochemical characteristics and predicting the behavior of nanoparticles ending up in the natural aquatic environment are key aspects of their risk assessment. Here, we show that the quantitative structure-property relationship modeling method used in nanoinformatics (nano-QSPR) can be successfully applied to predict environmental fate-relevant properties (electrophoretic mobility) of TiO2, ZnO, and CeO2 nanoparticles. However, in contrast to the previous works, we postulate to use, in parallel: (i) the nanoparticles' structure descriptors (S-descriptors) and (ii) the environment descriptors (E-descriptors) as the input variables. Thus, the method should be abbreviated more precisely as nano-QSEPR ("E" stands for the "environment"). As a proof-of-the-concept, we have developed a group of models (including MLR, GA-PLS, PCR, and Meta-Consensus models) with high predictive capabilities (QEXT2 = 0.931 for the GA-PLS model), where the S-descriptors are represented by the core-shell model descriptor and the E-descriptors - by different ambient water features (including ions concentration and the ionic strength). The newly proposed nano-QSEPR modeling scheme can be efficiently used to design safe and sustainable nanomaterials.
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Affiliation(s)
- Marta Swirog
- Laboratory of Environmental Chemoinformatics, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Alicja Mikolajczyk
- Laboratory of Environmental Chemoinformatics, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdańsk, Poland; QSAR Lab Sp. Z o. o., Trzy Lipy 3, 80-172, Poland.
| | - Karolina Jagiello
- Laboratory of Environmental Chemoinformatics, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdańsk, Poland; QSAR Lab Sp. Z o. o., Trzy Lipy 3, 80-172, Poland
| | - Jaak Jänes
- Institute of Chemistry, University of Tartu, Ravila 14A, Tartu 50411, Estonia
| | - Kaido Tämm
- Institute of Chemistry, University of Tartu, Ravila 14A, Tartu 50411, Estonia
| | - Tomasz Puzyn
- Laboratory of Environmental Chemoinformatics, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdańsk, Poland; QSAR Lab Sp. Z o. o., Trzy Lipy 3, 80-172, Poland.
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6
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A Simple Model to Estimate the Number of Metal Engineered Nanoparticles in Samples Using Inductively Coupled Plasma Optical Emission Spectrometry. Molecules 2022; 27:molecules27185810. [PMID: 36144546 PMCID: PMC9506279 DOI: 10.3390/molecules27185810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
Accurate determination of the size and the number of nanoparticles plays an important role in many different environmental studies of nanomaterials, such as fate, toxicity, and occurrence in general. This work presents an accurate model that estimates the number of nanoparticles from the mass and molar concentration of gold nanoparticles (AuNPs) in water. Citrate-capped AuNPs were synthesized and characterized using transmission electron microscopy (TEM) and ultraviolet–visible spectroscopy (UV-vis). A mimic of environmental matrices was achieved by spiking sediments with AuNPs, extracted with leachate, and separated from the bulk matrix using centrifuge and phase transfer separation techniques. The quantification of AuNPs’ molar concentration on the extracted residues was achieved by inductively coupled plasma optical emission spectroscopy (ICP-OES). The molar concentrations, an average diameter of 27 nm, and the colloidal suspension volumes of AuNPs enable the calculation of the number of nanoparticles in separated residues. The plot of the number of AuNPs against the mass of AuNPs yielded a simple linear model that was used to estimate the number of nanoparticles in the sample using ICP-OES. According to the authors’ knowledge, this is the first adaptation of the gravimetric method to ICP-OES for estimating the number of nanoparticles after separation with phase transfer.
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7
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Xie H, Wei X, Zhao J, He L, Wang L, Wang M, Cui L, Yu YL, Li B, Li YF. Size characterization of nanomaterials in environmental and biological matrices through non-electron microscopic techniques. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 835:155399. [PMID: 35472343 DOI: 10.1016/j.scitotenv.2022.155399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/14/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
Engineered nanomaterials (ENs) can enter the environment, and accumulate in food chains, thereby causing environmental and health problems. Size characterization of ENs is critical for further evaluating the interactions among ENs in biological and ecological systems. Although electron microscope is a powerful tool in obtaining the size information, it has limitations when studying nanomaterials in complex matrices. In this review, we summarized non-electron microscope-based techniques, including chromatography-based, mass spectrometry-based, synchrotron radiation- and neutron-based techniques for detecting the size of ENs in environmental and biological matrices. The advantages and disadvantages of these techniques were highlighted. The perspectives on size characterization of ENs in complex matrices were also presented.
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Affiliation(s)
- Hongxin Xie
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, Liaoning, China; CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Xing Wei
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, Liaoning, China
| | - Jiating Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lina He
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Liming Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Meng Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liwei Cui
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong-Liang Yu
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, Liaoning, China.
| | - Bai Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Feng Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, & CAS-HKU Joint Laboratory of Metallomics on Health and Environment, & Beijing Metallomics Facility, & National Consortium for Excellence in Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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8
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Wu A, Zhao X, Yang C, Wang J, Wang X, Liang W, Zhou L, Teng M, Niu L, Tang Z, Hou G, Wu F. A comparative study on aggregation and sedimentation of natural goethite and artificial Fe 3O 4 nanoparticles in synthetic and natural waters based on extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory and molecular dynamics simulations. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:128876. [PMID: 35468390 DOI: 10.1016/j.jhazmat.2022.128876] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/06/2022] [Accepted: 04/04/2022] [Indexed: 06/14/2023]
Abstract
Natural iron oxides nanomaterials have important roles in biogeochemical processes. In this study, the effects of pH, natural organic matter, and cations on aggregation and sedimentation of natural goethite and artificial Fe3O4 nanoparticles in water were investigated to learn more about the environmental behaviors of engineered and natural nanomaterials and how they differ. In addition, a novel extended DLVO theory that considered steric, gravitational, and magnetic attraction forces concurrently was specifically developed to provide mechanisms explanations. Specifically, Fe3O4 NPs were more likely than bulk goethite to aggregate (because of magnetic attraction interactions) at low HA concentrations and disperse at high HA concentrations. Besides, goethite was less prone to settle with the same concentration of NaCl than Fe3O4 NPs, but the opposite trend was found for the same concentration of CaCl2 because of the difference in maximum net energy (barrier) and strong Ca2+ bridging effectiveness of goethite in CaCl2 solution. Statistical models were established to evaluate colloidal stability of the particles. XPS and molecular dynamics simulation results suggested that ions were adsorbed onto particles via ionic polarization and that the binding free energies at high coverage followed the order Ca2+ > Na+ > Cl- and presence of cation bridging between particles.
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Affiliation(s)
- Aiming Wu
- College of Environment, Hohai University, Nanjing 210098, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xiaoli Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Chunyan Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environment Protection Key Laboratory of Regional Eco-Process and Function Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Junyu Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xia Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Weigang Liang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Lingfeng Zhou
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Miaomiao Teng
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Lin Niu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Zhi Tang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Guoqing Hou
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Fengchang Wu
- College of Environment, Hohai University, Nanjing 210098, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
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9
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Yallop M, Wang Y, Masuda S, Daniels J, Ockenden A, Masani H, Scott TB, Xie F, Ryan M, Jones C, Porter AE. Quantifying impacts of titanium dioxide nanoparticles on natural assemblages of riverine phytobenthos and phytoplankton in an outdoor setting. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 831:154616. [PMID: 35307433 DOI: 10.1016/j.scitotenv.2022.154616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/08/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
Impacts of widespread release of engineered titanium dioxide nanoparticles (nTiO2) on freshwater phytoplankton and phytobenthic assemblages in the field, represents a significant knowledge gap. Using outdoor experiments, we quantified impacts of nTiO2 on phytoplankton and periphyton from UK rivers, applied at levels representative of environmentally realistic concentrations (0.05 mg/L) and hot spots of accumulation (5.0 mg/L). Addition of nTiO2 to river water led to rapid temporal size changes in homoagglomerates and many heteroaggregates of nTiO2 with cells in the phytoplankton, including green algae, pennate and centric diatoms, increasing settlement of some cells. Changes in phytoplankton composition were evident after 72-h resulting from a significant decline in the relative abundance of very small phytoplankton cells (1-3 μm), often accompanied by increases in centric diatoms at both concentrations. Significant changes detected in the composition of the phytobenthos after 12 days, following nTiO2 treatments, were not evident when using benthic diatoms alone after 56 days. A lack of inhibition in the maximum quantum yield (Fv/Fm) in phytobenthos after 72-h exposures contrasted with a significant inhibition in Fv/Fm in 75% of phytoplankton samples, the highest recorded in Rutile nTiO2 exposures at both concentrations of nTiO2. After 12 days, strong positive stimulatory responses were recorded in the maximum relative electron transport rate (rETRmax) and the maximum non-photochemical coefficient (NPQmax), in phytoplankton and phytobenthos samples exposed to the higher Anatase nTiO2 concentration, were not measured in Rutile exposed biota. Collectively, these results indicate that the Rutile phase of nTiO2 has more negative impacts on freshwater algae than the Anatase form, at specific time scales, and phytoplankton may be more impacted by nTiO2 than phytobenthos. We caution that repeated release of nTiO2, could lead to significant changes in riverine algal biomass and species composition, dependent on the phase and concentration of nTiO2.
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Affiliation(s)
- Marian Yallop
- School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol BS8 1TQ, United Kingdom.
| | - Yunyang Wang
- Department of Materials and London Centre for Nanotechnology, Imperial College London, London SW7 2AZ, United Kingdom
| | - Seigo Masuda
- Department of Materials and London Centre for Nanotechnology, Imperial College London, London SW7 2AZ, United Kingdom
| | - Jack Daniels
- School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol BS8 1TQ, United Kingdom
| | - Amy Ockenden
- School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol BS8 1TQ, United Kingdom
| | - Hannah Masani
- School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol BS8 1TQ, United Kingdom
| | - Tom B Scott
- Interface Analyses Centre, University of Bristol, Bristol BS2 8BS, United Kingdom
| | - Fang Xie
- Department of Materials and London Centre for Nanotechnology, Imperial College London, London SW7 2AZ, United Kingdom
| | - Mary Ryan
- Department of Materials and London Centre for Nanotechnology, Imperial College London, London SW7 2AZ, United Kingdom
| | - Christopher Jones
- Interface Analyses Centre, University of Bristol, Bristol BS2 8BS, United Kingdom
| | - Alexandra E Porter
- Department of Materials and London Centre for Nanotechnology, Imperial College London, London SW7 2AZ, United Kingdom
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10
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Li Z, Wan J, Zhang Y, Dang C, Pan F, Fu J. Influences of petroleum hydrocarbon pyrene on the formation, stability and antibacterial activity of natural Au nanoparticles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 795:148813. [PMID: 34246134 DOI: 10.1016/j.scitotenv.2021.148813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/27/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
The effect of pyrene on the formation of naturally Au nanoparticles (AuNPs) in the presence of humic acid (HA) under UV irradiation is described. TEM, EDS, FTIR and XPS were carried out to prove the formation of AuNPs and display their morphologies and formation mechanism. There are little differences between size, morphology and function groups of surface coated materials of AuNPs formed with and without pyrene. With the presence of HA, pyrene showed an inhibiting effect on the reduction of Au ion via competition for O2•-, thereby decreasing the production of AuNPs. However, AuNPs formed by HA-pyrene showed higher stability than AuNPs formed by HA with the sedimentation rates of 4.13% and 13.68% respectively after 30-d standing. As for the antibacterial activities against Staphylococcus aureus and Escherichia coli, AuNPs formed by HA-pyrene were more toxic than AuNPs formed by HA. Meanwhile, changes of environmental factors such as temperature, pH and ionic strength exhibited similar influence trend on the formation of AuNPs in the presence and absence of pyrene. The results suggest that the typical petroleum hydrocarbon pyrene contained in spilled oil could influence the formation, fate and ecotoxicity of AuNPs.
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Affiliation(s)
- Zhang Li
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jing Wan
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yibo Zhang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chenyuan Dang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Fei Pan
- School of Environmental Engineering, Wuhan Textile University, Engineering Research Centre for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan 430073, China.
| | - Jie Fu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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11
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Timerbaev AR, Kuznetsova OV, Keppler BK. Current trends and challenges in analysis and characterization of engineered nanoparticles in seawater. Talanta 2021; 226:122201. [PMID: 33676721 DOI: 10.1016/j.talanta.2021.122201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/31/2021] [Accepted: 02/03/2021] [Indexed: 10/22/2022]
Abstract
With the increasingly wide use of engineered nanoparticles (ENPs), their release into the environment makes it important to determine in what quantitates they occur in aquatic systems and to understand their fate therein. In particular, detection and quantification of ENPs in seawater is challenging and often requires analytical methods to perform close to the feasibility confines. This review is aimed at critical analysis of current and emerging capabilities of analytical methods as have been employed for the analysis and characterization of ENPs in seawater in the last decade. An emphasis is given to the most reliable experimental strategies focused on avoiding the high-salt matrix effect and isolation and enrichment of the nanoparticulate fraction prior to analysis. Advanced analytical methodology in use basically relies on the application of elemental mass spectrometry to determine various particle-core metals and its single-particle mode to characterize the seawater-mediated transformation of ENPs, including dissolution, aggregation, etc. On the other hand, common microscopy, light scattering or X-ray based techniques are not sensitive enough to acquire the transformation information from real seawater samples. Finally, attention is pinpointed upon an acute shortcoming of the current research which is in the overwhelming majority of cases restricted to samples spiked with ENPs and often at excessive concentration levels.
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Affiliation(s)
- Andrei R Timerbaev
- Vernadsky Institute of Geochemistry and Analytical Chemistry, 119991, Moscow, Russian Federation.
| | - Olga V Kuznetsova
- Vernadsky Institute of Geochemistry and Analytical Chemistry, 119991, Moscow, Russian Federation
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, University of Vienna, 1090, Vienna, Austria
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12
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Chowdhury NN, Cox AR, Wiesner MR. Nanoparticles as vectors for antibiotic resistance: The association of silica nanoparticles with environmentally relevant extracellular antibiotic resistance genes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 761:143261. [PMID: 33223180 DOI: 10.1016/j.scitotenv.2020.143261] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/04/2020] [Accepted: 10/20/2020] [Indexed: 05/09/2023]
Abstract
A relevant but yet unconsidered subset of particles that may alter the fate of extracellular antibiotic resistance genes (eARGs) are nano-scale particles (NPs), which are ubiquitous in natural environments and have unique properties. In this study, sorption isotherms were developed describing the association of linear DNA fragments isolated from widespread eARGs (blaI and nptII) with either micon-sized kaolinite or silica nanoparticles (SNPs), to determine if sorption capacity was enhanced at the nanoscale. For each isotherm, eARG fragments were added at five starting concentrations (5-40 μg/mL) to mixed batch systems with 0.25 g of particles and nuclease-free water. Sorption was quantified by the removal of DNA from solution, as detected by a Qubit fluorimeter. Isotherms were developed for eARGs of various fragment lengths (508, 680 and 861 bp), guanine-cytosine (GC) contents (34%, 47% and 54%) and both double and single stranded eARGs, to assess the impact of DNA properties on particle association. Sorption isotherms were also developed in systems with added humic acid and/or CaCl2, to assess the impact of these environmental parameters on sorption. FTIR analysis was performed to analyze the conformation of sorbed eARGs. Desorption of eARGs was studied by quantifying the removal of eDNA from washed and vortexed post-sorption particles. Statistically significant irreversible sorption of eARGs to environmentally relevant NPs (humic acid functionalized silica nanoparticles) was demonstrated for the first time. Nano-emergent properties did not increase sorption capacity of eARGs, but led to a unique compressed conformation of sorbed eARGs. The addition of humic acid, increased CaCl2 concentration and small DNA fragment size favored sorption. NPs showed a slight preference for the sorption of single-stranded DNA over double-stranded DNA. These findings suggest that NP association with eARGs may be a significant and unique environmental phenomenon that could influence the spread of antibiotic resistance.
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Affiliation(s)
- Nadratun N Chowdhury
- Department of Civil and Environmental Engineering, Duke Hudson Hall, Box 90287, Durham, NC 27708-0287, USA.
| | - Akylah R Cox
- Department of Civil and Environmental Engineering, Duke Hudson Hall, Box 90287, Durham, NC 27708-0287, USA
| | - Mark R Wiesner
- Department of Civil and Environmental Engineering, Duke Hudson Hall, Box 90287, Durham, NC 27708-0287, USA
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Wang H, Han X, Chen Y, Guo W, Zheng W, Cai N, Guo Q, Zhao X, Wu F. Effects of F -, Cl -, Br -, NO 3-, and SO 42- on the colloidal stability of Fe 3O 4 nanoparticles in the aqueous phase. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 757:143962. [PMID: 33316533 DOI: 10.1016/j.scitotenv.2020.143962] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/12/2020] [Accepted: 11/14/2020] [Indexed: 06/12/2023]
Abstract
The effect of ions on the colloidal behavior of magnetic nanoparticles (MNPs) is an important factor for determining the dispersibility of MNPs. Compared with the effects of cations and organic matter, the effect of anions on MNPs has rarely been studied. Hence, in this study, the effect of anions on the aggregation of Fe3O4 MNPs in the aqueous phase was investigated using F-, Cl-, Br-, NO3-, and SO42-. The results indicated that the effect of anions on the colloidal behavior of the MNPs varied widely depending on their valence state, concentration, hydration ability, solution pH, and the magnetic force between the MNPs. Specifically, at pH 5.0, the anions were mainly adsorbed on the particle surface by electrostatic attraction, decreasing the electrostatic repulsion between the MNPs and causing an aggregation of the particles in the order of SO42- > F- > Br- > Cl- ≈ NO3-. At pH 9.0, anions strengthened the suspension of the MNPs at low ionic strength (IS) (≤5); however, with increasing IS, an aggregation of the MNPs in the following order was formed: NO3- > Cl- > Br- ≥ F- > SO42-. This was a result of the combined effects of the IS of solution, hydrability, and polarizability of the anions. Furthermore, the Derjaguin-Landau-Vervey-Overbeek (DLVO) theory can explain the colloidal behavior of MNPs in the presence of magnetic forces, but it fails to differentiate the MNP behaviors between monovalent anions because the effects of ionic hydrability and polarizability are not considered. Distinctively, the secondary minimum between the MNPs particles were induced via magnetic attraction and played a critical role in adjusting the colloidal stability of the MNPs. Overall, these results indicate that specific ionic effects and magnetic attraction are important for interpreting the colloidal stability of MNPs in aqueous conditions.
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Affiliation(s)
- Hao Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; South China Institute of Environmental Science, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Xuejiao Han
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Yao Chen
- South China Institute of Environmental Science, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Wenjing Guo
- Institute of Agricultural Resource and Environmental Sciences, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Wenli Zheng
- South China Institute of Environmental Science, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Nan Cai
- South China Institute of Environmental Science, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Qingwei Guo
- South China Institute of Environmental Science, Ministry of Ecology and Environment, Guangzhou 510530, China.
| | - Xiaoli Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Fengchang Wu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
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14
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Leonel AG, Mansur AAP, Mansur HS. Advanced Functional Nanostructures based on Magnetic Iron Oxide Nanomaterials for Water Remediation: A Review. WATER RESEARCH 2021; 190:116693. [PMID: 33302040 DOI: 10.1016/j.watres.2020.116693] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/10/2020] [Accepted: 11/27/2020] [Indexed: 05/24/2023]
Abstract
The fast growth of industrialization combined with the increasing population has led to an unparalleled demand for providing water in a safe, reliable, and cost-effective way, which has become one of the biggest challenges of the twenty-first century faced by global society. The application of nanotechnology in water treatment and pollution cleanup is a promising alternative in order to overcome the current limitations. In particular, the application of magnetic iron oxide nanoparticles (MIONs) for environmental remediation has currently received remarkable attention due to its unique combination of physicochemical and magnetic properties. Given the broadening use of these functional engineered nanomaterials, there is a growing concern about the adverse effects upon exposure of products and by-products to the environment. This makes vitally relevant the development of green chemistry in the synthesis processes combined with a trustworthy risk assessment of the nanotoxicity of MIONs as the scientific knowledge of the potential hazard of nanomaterials remains limited. This work provides comprehensive coverage of the recent progress on designing and developing iron oxide-based nanomaterials through a green synthesis strategy, including the use of benign solvents and ligands. Despite the limitations of nanotoxicity and environmental risks of iron oxide-based nanoparticles for the ecosystem, this critical review presents a contribution to the emerging knowledge concerning the theoretical and experimental studies on the toxicity of MIONs. Potential improvement of applications of advanced iron oxide-based hybrid nanostructures in water treatment and pollution control is also addressed in this review.
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Affiliation(s)
- Alice G Leonel
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais - UFMG, Av. Antônio Carlos, 6627 - Belo Horizonte/MG, Brazil.
| | - Alexandra A P Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais - UFMG, Av. Antônio Carlos, 6627 - Belo Horizonte/MG, Brazil.
| | - Herman S Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais - UFMG, Av. Antônio Carlos, 6627 - Belo Horizonte/MG, Brazil.
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15
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Dedman CJ, Newson GC, Davies GL, Christie-Oleza JA. Mechanisms of silver nanoparticle toxicity on the marine cyanobacterium Prochlorococcus under environmentally-relevant conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 747:141229. [PMID: 32777503 DOI: 10.1016/j.scitotenv.2020.141229] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 07/22/2020] [Accepted: 07/23/2020] [Indexed: 06/11/2023]
Abstract
Global demand for silver nanoparticles (AgNPs), and their inevitable release into the environment, is rapidly increasing. AgNPs display antimicrobial properties and have previously been recorded to exert adverse effects upon marine phytoplankton. However, ecotoxicological research is often compromised by the use of non-ecologically relevant conditions, and the mechanisms of AgNP toxicity under environmental conditions remains unclear. To examine the impact of AgNPs on natural marine communities, a natural assemblage was exposed to citrate-stabilised AgNPs. Here, investigation confirmed that the marine dominant cyanobacteria Prochlorococcus is particularly sensitive to AgNP exposure. Whilst Prochlorococcus represents the most abundant photosynthetic organism on Earth and contributes significantly to global primary productivity, little ecotoxicological research has been carried out on this cyanobacterium. To address this, Prochlorococcus was exposed to citrate-stabilised AgNPs, as well as silver in its ionic form (Ag2SO4), under simulated natural conditions. Both AgNPs and ionic silver were observed to reduce Prochlorococcus populations by over 90% at concentrations ≥10 μg L-1, representing the upper limit of AgNP concentrations predicted in the environment (10 μg L-1). Longer-term assessment revealed this to be a perturbation which was irreversible. Through use of quenching agents for superoxide and hydrogen peroxide, alongside incubations with ionic silver, it was revealed that AgNP toxicity likely arises from synergistic effects of toxic superoxide species generation and leaching of ionic silver. The extent of toxicity was strongly dependent on cell density, and completely mitigated in more cell-dense cultures. Hence, the calculation and reporting of the particle-to-cell ratio reveals that this parameter is effective for standardisation of experimental work, and allows for direct comparison between studies where cell density may vary. Given the key role that marine cyanobacteria play in global primary production and biogeochemical cycling, their higher susceptibility to AgNP exposure is a concern in hotspots of pollution.
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Affiliation(s)
- Craig J Dedman
- School of Life Sciences, Gibbet Hill Campus, University of Warwick, Coventry CV4 7AL, United Kingdom..
| | - Gabrielle C Newson
- Department of Chemistry, University of Warwick, Gibbet Hill, Coventry CV4 7EQ, United Kingdom
| | - Gemma-Louise Davies
- University College London, Department of Chemistry, 20 Gordon Street, London WC1H 0AJ, United Kingdom..
| | - Joseph A Christie-Oleza
- School of Life Sciences, Gibbet Hill Campus, University of Warwick, Coventry CV4 7AL, United Kingdom.; Department of Biology, University of the Balearic Islands, Ctra. Valldemossa, km 7.5, CP: 07122 Palma, Spain; IMEDEA (CSIC-UIB), CP: 07190 Esporles, Spain.
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16
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Surface-enhanced Raman scattering (SERS)-based immunosystem for ultrasensitive detection of the 90K biomarker. Anal Bioanal Chem 2020; 412:7659-7667. [PMID: 32875368 PMCID: PMC7533257 DOI: 10.1007/s00216-020-02903-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/07/2020] [Accepted: 08/19/2020] [Indexed: 02/07/2023]
Abstract
The research and the individuation of tumour markers in biological fluids are currently one of the main tools to support diagnosis, prognosis, and monitoring of the therapeutic response in oncology. Although the identification of tumour markers in asymptomatic patients is crucial for early diagnosis, its application is still limited by the relatively low sensitivity and the complexity of existing methods (i.e. ELISA, mass spectrometry). We developed an easy, fast, and ultrasensitive surface-enhanced Raman scattering (SERS)-based system, for the detection and quantitation of the LGALS3BP (90K) biomarker that was used as a model, based on the development of antibody-functionalized nanostructured gold surfaces. The detection system was effective for the ultrasensitive detection and characterization of samples of different biochemical compositions. In conclusion, this work could provide the foundation for the development of a medical diagnostic device with the highest predictive power when compared with the methods currently used in cancer diagnostics.
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17
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Nanja AF, Focke WW, Musee N. Aggregation and dissolution of aluminium oxide and copper oxide nanoparticles in natural aqueous matrixes. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2952-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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18
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Abbas Q, Yousaf B, Ali MU, Munir MAM, El-Naggar A, Rinklebe J, Naushad M. Transformation pathways and fate of engineered nanoparticles (ENPs) in distinct interactive environmental compartments: A review. ENVIRONMENT INTERNATIONAL 2020; 138:105646. [PMID: 32179325 DOI: 10.1016/j.envint.2020.105646] [Citation(s) in RCA: 136] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 03/08/2020] [Accepted: 03/08/2020] [Indexed: 05/24/2023]
Abstract
The ever increasing production and use of nano-enabled commercial products release the massive amount of engineered nanoparticles (ENPs) in the environment. An increasing number of recent studies have shown the toxic effects of ENPs on different organisms, raising concerns over the nano-pollutants behavior and fate in the various environmental compartments. After the release of ENPs in the environment, ENPs interact with various components of the environment and undergoes dynamic transformation processes. This review focus on ENPs transformations in the various environmental compartments. The transformation processes of ENPs are interrelated to multiple environmental aspects. Physical, chemical and biological processes such as the homo- or hetero-agglomeration, dissolution/sedimentation, adsorption, oxidation, reduction, sulfidation, photochemically and biologically mediated reactions mainly occur in the environment consequently changes the mobility and bioavailability of ENPs. Physico-chemical characteristics of ENPs (particle size, surface area, zeta potential/surface charge, colloidal stability, and core-shell composition) and environmental conditions (pH, ionic strength, organic and inorganic colloids, temperature, etc.) are the most important parameters which regulated the ENPs environmental transformations. Meanwhile, in the environment, organisms encountered multiple transformed ENPs rather than the pristine nanomaterials due to their interactions with various environmental materials and other pollutants. Thus it is the utmost importance to study the behavior of transformed ENPs to understand their environmental fate, bioavailability, and mode of toxicity.
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Affiliation(s)
- Qumber Abbas
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Balal Yousaf
- Department of Environmental Engineering, Middle East Technical University, Ankara 06800, Turkey; CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China.
| | - Muhammad Ubaid Ali
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Mehr Ahmed Mujtaba Munir
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Ali El-Naggar
- Department of Soil Sciences, Faculty of Agriculture, Ain Shams University, Cairo 11241, Egypt
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; Department of Environment, Energy and Geoinformatics, Sejong University, 98 Gunja-Dong, Seoul, Republic of Korea
| | - Mu Naushad
- Department of Chemistry, College of Science, Bld#5, King Saud University, Riyadh, Saudi Arabia
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19
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Sousa VS, Ribau Teixeira M. Metal-based engineered nanoparticles in the drinking water treatment systems: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 707:136077. [PMID: 31863978 DOI: 10.1016/j.scitotenv.2019.136077] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 12/09/2019] [Accepted: 12/09/2019] [Indexed: 06/10/2023]
Abstract
The emergence of nanotechnologically-enabled materials, compounds or products inevitably leads to engineered nanoparticles (ENPs) released into surface waters. ENPs have already been detected in wastewater streams, drinking water sources and even in tap water at concentrations in the ng/L and μg/L range, making the latter a potential route for humans. The presence of ENPs in raw waters raises concerns over the possibility that ENPs might pose a hazard to the quality and security of drinking water and whether drinking water treatment plants (DWTPs) are prepared to handle this problem. Therefore, it is essential to critically evaluate if ENPs can be effectively removed through water treatment processes to control environmental and human health risks associated with their release. This review includes a summary of the available information on production, presence, potential hazards to human health and environment, and release and behaviour of metal-based ENPs in surface waters and drinking water. In addition, the most extensively studied water treatment processes to remove metal-based ENPs, specifically conventional and advanced processes, are discussed and highlighted in detail. Furthermore, this work identifies the research gaps regarding ENPs removal in DWTPs and discusses future aspects of ENPs in water treatment.
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Affiliation(s)
- Vânia Serrão Sousa
- CENSE, Center for Environmental and Sustainability Research, Portugal; University of Algarve, Faculty of Sciences and Technology, bldg 7, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Margarida Ribau Teixeira
- CENSE, Center for Environmental and Sustainability Research, Portugal; University of Algarve, Faculty of Sciences and Technology, bldg 7, Campus de Gambelas, 8005-139 Faro, Portugal.
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20
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Lv B, Wang C, Hou J, Wang P, Miao L, Xing B. Development of a comprehensive understanding of aggregation-settling movement of CeO 2 nanoparticles in natural waters. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113584. [PMID: 31733953 DOI: 10.1016/j.envpol.2019.113584] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 10/07/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
Parameters such as the settling rate, aggregation rate, and collision frequency in predictive models used to describe the fate of nanoparticles (NPs) are very important for the risk assessment of NPs in the environment. In this study, CeO2 NPs were chosen as the model particles to investigate such parameters through aggregation-settling experiments under environmentally relevant conditions. The results indicate that natural colloids (Ncs) have no effect on the settling of NPs in seawaters, whereas they stabilize the NPs at a low initial particle concentration and promote the heteroaggregation of NPs at a high initial particle concentration in lake waters. In all cases, a suspended sediment absorbs the NPs and Ncs as mixed aggregates, resulting in a rapid settling. Furthermore, the calculation results of the model indicate that the shear force increases the collision frequency of the NPs by 4-5 orders of magnitude higher than that in quiescent waters. However, the break-up effect by the shear force is more obvious, namely, the shear force hinders the aggregation of NPs in natural waters, instead of promoting aggregation. Remarkably, a negative value of the dis-heteroaggregation rate based on the combined von Smoluchowski-Stokes equation can reflect the hindering effect on the aggregation process. The results of this study will provide scientific and accurate guidance for the parameter selection in the existing prediction model and contribute to a prediction of the fate and transport of NPs in the environment.
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Affiliation(s)
- Bowen Lv
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Jun Hou
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China.
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Lingzhan Miao
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States
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21
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Quantification of ZnO nanoparticles and other Zn containing colloids in natural waters using a high sensitivity single particle ICP-MS. Talanta 2019; 200:156-162. [DOI: 10.1016/j.talanta.2019.03.041] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 03/06/2019] [Accepted: 03/07/2019] [Indexed: 11/20/2022]
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22
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Zhang F, Wang Z, Wang S, Fang H, Wang D. Aquatic behavior and toxicity of polystyrene nanoplastic particles with different functional groups: Complex roles of pH, dissolved organic carbon and divalent cations. CHEMOSPHERE 2019; 228:195-203. [PMID: 31029965 DOI: 10.1016/j.chemosphere.2019.04.115] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/02/2019] [Accepted: 04/14/2019] [Indexed: 06/09/2023]
Abstract
Herein we systematically examined the roles of water chemistry (pH, dissolved organic carbon (DOC), and divalent cations) and particle surface functionality that control the aqueous stability, aggregation, and toxicity of engineered nanoplastic particles in simulated natural environmental conditions. Model polystyrene latex nanoparticles (PLNPs) with three different functional groups, namely unmodified (uPLNPs), amine-modified (aPLNPs), and carboxyl-modified (cPLNPs), were investigated. Results indicate that the presence of only DOC increased the surface charge and exhibited negligible effects on the size distribution of the PLNPs in aqueous suspensions. The presence of the divalent cations (Ca2+ and Mg2+) was observed to decrease the surface charge and increase the size of the PLNPs. The coexistence of DOC and the divalent cations enhanced the extent of aggregation of the PLNPs in the water columns. The surface modification and pH were sensitive factors influencing the stability of PLNPs during long-term suspension when DOC and the divalent cations coexisted. Direct visual further testified the conclusions on the combined effects of solution and surface chemistry parameters. Furthermore, in situ transmission electron microscope observations revealed that the enhancement of PLNP aggregation in the presence of DOC and the divalent cation was caused by bridge formation. Toxicity test indicated the PLNPs exhibited acute toxicity and physical damage to Daphnia magna. The more complex the solution conditions, the more toxicity the aPLNPs and cPLNPs. Analysis of mode of toxic action implied that the PLNPs mainly caused the accumulation of oxidative damage to the gut of D. magna.
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Affiliation(s)
- Fan Zhang
- School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Zhuang Wang
- School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
| | - Se Wang
- School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Hao Fang
- School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Degao Wang
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China
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Oriekhova O, Stoll S. Heteroaggregation of CeO 2 nanoparticles in presence of alginate and iron (III) oxide. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 648:1171-1178. [PMID: 30340263 DOI: 10.1016/j.scitotenv.2018.08.176] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/24/2018] [Accepted: 08/14/2018] [Indexed: 06/08/2023]
Abstract
When manufactured nanoparticles are released to natural waters, heteroaggregation between nanoparticles and water compounds is expected to occur and play a key role in nanoparticle fate, transport and transformation. In this work, the heteroaggregation between CeO2 nanoparticles and Fe2O3 inorganic colloids, which represent the main inorganic fraction from Lake Geneva water, is studied. The heteroaggregation processes between CeO2, Fe2O3 and alginate in multiple water samples are investigated using zeta potential and z-average diameter measurements. The kinetics of heteroaggregation of individual components as well as mixtures of CeO2 nanoparticles and Fe2O3 colloids and alginate are studied using time resolved dynamic light scattering. The global attachment efficiency (αglobal) is calculated using data from kinetic experiments. αglobal for pristine CeO2 nanoparticles varied from 0.5 to 0.7 in lake and synthetic waters and is found around 1 for pristine Fe2O3 and mixture CeO2 and Fe2O3. Our findings demonstrate that heteroaggregation is highly dependent on environmental conditions and resulting electrostatic scenarios. No heteroaggregation at pH 8 between CeO2, Fe2O3 and alginate is observed in ultrapure water, because of electrostatic repulsions between negatively charged compounds. In synthetic and lake waters, the situation is opposite. Indeed, specific adsorption of divalent cations and presence of salt are found to promote heteroaggregation via cation bridging and screening effects. The kinetic experiments indicate that aggregation rate of pristine Fe2O3 is higher (89 nm/min in lake water) compared to pristine CeO2 nanoparticles (50 nm/min) and on the same level as mixture of CeO2 and Fe2O3 (96 nm/min). Low alginate concentration, 0.25 mg/L, has no effect on heteroaggregation in mixture of CeO2 and Fe2O3 in lake and synthetic waters. On the other hand, in natural water, the presence of higher alginate concentration, 2 mg/L, is found to reduce the heteroaggregation rate.
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Affiliation(s)
- Olena Oriekhova
- Group of Environmental Physical Chemistry, Department F.-A. Forel for Environmental and Aquatic Sciences, Institute of Environmental Science, University of Geneva, Uni Carl Vogt 66, boulevard Carl-Vogt, CH-1211 Geneva 4, Switzerland.
| | - Serge Stoll
- Group of Environmental Physical Chemistry, Department F.-A. Forel for Environmental and Aquatic Sciences, Institute of Environmental Science, University of Geneva, Uni Carl Vogt 66, boulevard Carl-Vogt, CH-1211 Geneva 4, Switzerland.
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24
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Xu F. Review of analytical studies on TiO 2 nanoparticles and particle aggregation, coagulation, flocculation, sedimentation, stabilization. CHEMOSPHERE 2018; 212:662-677. [PMID: 30173113 DOI: 10.1016/j.chemosphere.2018.08.108] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 08/18/2018] [Accepted: 08/20/2018] [Indexed: 06/08/2023]
Abstract
Titanium dioxide (TiO2) nanoparticles (NPs) have been widely used in industrial and consumer products. Comprehensive and accurate detection, characterization, and quantification of TiO2 NPs are important for understanding the specific property, behavior, fate, and potential risk of TiO2 NPs in natural and engineered environments. This review provides a summary of recent analytical studies of TiO2 NPs and their aggregation, coagulation, flocculation, sedimentation, stabilization under a wide range of conditions and processes. Much attention is paid on sample preparation prior to an analytical procedure, analysis of particle size, morphology, structure, state, chemical composition, surface properties, etc., via measurements of light scattering and zeta potential, microscopy, spectroscopy, and related techniques. Recently, some advanced techniques have also been explored to characterize TiO2 NPs and their behaviors in the environment. Many issues must be considered including distinction between engineered TiO2 NPs and their naturally occurring counterparts, lack of reference materials, interlaboratory comparison, when analyzing low concentrations of TiO2 NPs and their behaviors in complex matrices. No "ideal" technique has emerged as each technique has its own merits, biases, and limitations. Multi-method approach is highlighted to provide in-depth information. Improvements of analytical method for determination of TiO2 NPs have been recommended to be together with exposure modelers and ecotoxicologists for maximum individual and mutual benefit. Future work should focus on developing analytical technology with the advantages of being reliable, sensitive, selective, reproducible, and capable of in situ detection in complicated sample system.
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Affiliation(s)
- Fang Xu
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, North Carolina, 27599-7431, USA.
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Lodeiro P, Achterberg EP, Rey-Castro C, El-Shahawi MS. Effect of polymer coating composition on the aggregation rates of Ag nanoparticles in NaCl solutions and seawaters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 631-632:1153-1162. [PMID: 29727941 DOI: 10.1016/j.scitotenv.2018.03.131] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 03/11/2018] [Accepted: 03/11/2018] [Indexed: 06/08/2023]
Abstract
The aggregation behaviour of polymer-coated silver nanoparticles (AgNPs) was characterized in NaCl solutions, and in two seawaters of different salinities and dissolved organic matter (DOM) contents. Representative organic coatings i.e. tannic acid (TA), alginic acid (ALG), two gum Arabic samples (GAL and GAH), branched polyethylenimine (BPEI), and non-ionic surfactants (reference material NM-300K) were selected to cover a wide range of zeta-potentials. The stability in NaCl solutions, as determined from the rate of variation in hydrodynamic size within a timeframe of one hour, followed the order BPEI≫NM-300K≈GAL≫ALG≈TA≫GAH. In the seawater samples the order was NM-300K≈GAL≫ALG>GAH>TA≈BPEI, and only TA, GAL and NM-300K batches behaved as expected from the NaCl experiments. Remarkably, the BPEI sample showed the largest aggregation rate in the seawater sample with the highest DOM concentration (277μM C). The GAH sample displayed a non-monotonic variation in aggregation rate with NaCl concentration, apparently due to concomitant precipitation of AgCl. The results indicate that non-electrostatic stabilization mechanisms and DOM-coating interactions are important for the prediction of stability and persistence of polymer-coated AgNPs in seawater.
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Affiliation(s)
- Pablo Lodeiro
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, European Way, SO14 3ZH Southampton, UK; GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, 24148 Kiel, Germany.
| | - Eric P Achterberg
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, European Way, SO14 3ZH Southampton, UK; GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, 24148 Kiel, Germany
| | - Carlos Rey-Castro
- Departament de Química, Universitat de Lleida and AGROTECNIO, Rovira Roure 191, 25198 Lleida, Spain
| | - Mohammad S El-Shahawi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia
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Lv B, Wang C, Hou J, Wang P, Miao L, You G, Yang Y, Xu Y, Zhang M, Ci H. Towards a better understanding on aggregation behavior of CeO 2 nanoparticles in different natural waters under flow disturbance. JOURNAL OF HAZARDOUS MATERIALS 2018; 343:235-244. [PMID: 28963887 DOI: 10.1016/j.jhazmat.2017.09.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/21/2017] [Accepted: 09/23/2017] [Indexed: 06/07/2023]
Abstract
The fate of nanoparticles in natural waters is affected by the combination of various factors, especially the flow disturbance which plays a decisive role in the transport of nanoparticles. This study investigated the aggregation behavior of CeO2 nanoparticles (NPs) in natural waters by using a unique instrument to simulate flow disturbance. The results indicated that, in the absence of a shear force, the CeO2 NPs formed linear, chain-like aggregates in seawater, owing to the high IS, which compressed the electrical double layer of particles. On the other hand, the NPs formed more compact aggregates in lake water, owing to an ion bridge effect between the NPs and the dissolved organic matter (DOM). It was also found that shear forces affected the aggregation behavior of the NPs. A low shear force promoted the aggregation of the NPs by increasing the collision efficiency while the aggregates were broken by a high shear force. Remarkably, the NPs maintained their potential for continuous aggregation when the slow stirring was reintroduced, suggesting that the aggregates began to grow again under renewed stirring. The results of this study could help in predicting the fate and transport behavior of CeO2 NPs in actual aquatic environments.
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Affiliation(s)
- Bowen Lv
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Jun Hou
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China.
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China.
| | - Lingzhan Miao
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Guoxiang You
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Yangyang Yang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Yi Xu
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Mingzhi Zhang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Hanlin Ci
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
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Liao Q, Li L, Yuan Y, Cheng B, Lu W, Hou S. Preparation of 4-sulfonylcalix[6]arene modified Fe3O4 as adsorbent for adsorption of U(VI) from aqueous solution. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5650-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yang HM, Hwang KS, Park CW, Lee KW. Sodium-copper hexacyanoferrate-functionalized magnetic nanoclusters for the highly efficient magnetic removal of radioactive caesium from seawater. WATER RESEARCH 2017; 125:81-90. [PMID: 28834769 DOI: 10.1016/j.watres.2017.08.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 08/08/2017] [Accepted: 08/15/2017] [Indexed: 06/07/2023]
Abstract
Sodium-copper hexacyanoferrate (NaCuHCF)-functionalized magnetic nanoadsorbents were fabricated for the highly efficient magnetic removal of radioactive caesium from seawater. The magnetic nanoclusters (MNCs), composed of many individual Fe3O4 nanoparticles, were covalently coated with polyethyleneimine (PEI) to functionalize the MNC surfaces with NaCuHCF. After simple immobilization of Cu and Na ferrocyanide on the NC surface, the resulting NaCuHCF-functionalized MNCs showed good magnetic properties and a significant adsorption capacity for Cs+ with a high content of NaCuHCF (36.04%). The adsorption kinetics and isotherms were well fit to a pseudo-second-order model and Langmuir isotherm, respectively. The sorption of 97.35% Cs by the NaCuHCF-PEI-MNCs completed in less than 5 min, and the maximum adsorption capacity of the adsorbent was 166.67 mg/g. The NaCuHCF-PEI-MNCs selectively adsorbed Cs even in the presence of various competing ions, such as Na, K, Mg, and Ca, and the Cs removal mechanism was revealed as ion exchange between Cs in solution and Na in the NaCuHCF-PEI-MNCs. In radioactive tests, our adsorbent displayed excellent removal performance in real seawater with a high removal efficiency exceeding 99.73%, a decontamination factor exceeding 372, and a high stability in water over a wide pH range from 4 to 10 with negligible leaching of Fe.
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Affiliation(s)
- Hee-Man Yang
- Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 305-353, Republic of Korea.
| | - Kyu Sun Hwang
- Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 305-353, Republic of Korea
| | - Chan Woo Park
- Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 305-353, Republic of Korea
| | - Kune-Woo Lee
- Decontamination & Decommissioning Research Division, Korea Atomic Energy Research Institute, 989-111 Daedukdaero, Yuseong, Daejeon, 305-353, Republic of Korea
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Oriekhova O, Le Coustumer P, Stoll S. Impact of biopolymer coating on the colloidal stability of manufactured CeO2 nanoparticles in contrasting water conditions. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.07.069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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30
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Seke M, Markelic M, Morina A, Jovic D, Korac A, Milicic D, Djordjevic A. Synergistic mitotoxicity of chloromethanes and fullerene C 60 nanoaggregates in Daphnia magna midgut epithelial cells. PROTOPLASMA 2017; 254:1607-1616. [PMID: 27913906 DOI: 10.1007/s00709-016-1049-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 11/16/2016] [Indexed: 06/06/2023]
Abstract
Adsorption of non-polar compounds by suspended fullerene nanoaggregates (nC60) may enhance their toxicity and affect the fate, transformation, and transport of non-polar compounds in the environment. The potential of stable fullerene nanoaggregates as contaminant carriers in aqueous systems and the influence of chloromethanes (trichloromethane and dichloromethane) were studied on the midgut epithelial cells of Daphnia magna by light and electron microscopy. The size and shape of fullerene nanoaggregates were observed and measured using dynamic light scattering, transmission electron microscopy, and low vacuum scanning electron microscopy. The nC60 in suspension appeared as a bulk of aggregates of irregular shape with a surface consisting of small clumps 20-30 nm in diameter. The presence of nC60 aggregates was confirmed in midgut lumen and epithelial cells of D. magna. After in vivo acute exposure to chloromethane, light and electron microscopy revealed an extensive cytoplasmic vacuolization with disruption and loss of specific structures of D. magna midgut epithelium (mitochondria, endoplasmic reticulum, microvilli, peritrophic membrane) and increased appearance of necrotic cells. The degree of observed changes depended on the type of treatment: trichloromethane (TCM) induced the most notable changes, whereas fullerene nanoaggregates alone had no negative effects. Transmission electron microscopy also indicated increased lysosomal degradation and severe peroxidative damages of enterocyte mitochondria following combined exposure to chloromethane and fullerene nanoaggregates. In conclusion, the adsorption of chloromethane by fullerene nanoaggregates enhances their toxicity and induces peroxidative mitochondrial damage in midgut enterocytes.
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Affiliation(s)
- Mariana Seke
- University of Belgrade, Institute of Nuclear Sciences "Vinca", Laboratory for Radiobiology and Molecular Genetics, Belgrade, Republic of Serbia
| | - Milica Markelic
- University of Belgrade, Faculty of Biology, Centre for Electron Microscopy, Belgrade, Republic of Serbia
| | - Arian Morina
- University of Belgrade, Faculty of Biology, Belgrade, Republic of Serbia
| | - Danica Jovic
- University of Novi Sad, Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, Novi Sad, Republic of Serbia
| | - Aleksandra Korac
- University of Belgrade, Faculty of Biology, Centre for Electron Microscopy, Belgrade, Republic of Serbia
| | - Dragana Milicic
- University of Belgrade, Faculty of Biology, Belgrade, Republic of Serbia.
| | - Aleksandar Djordjevic
- University of Novi Sad, Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, Novi Sad, Republic of Serbia
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Gigault J, Grassl B. Improving the understanding of fullerene (nC 60) aggregate structures: Fractal dimension characterization by static light scattering coupled to asymmetrical flow field flow fractionation. J Colloid Interface Sci 2017; 502:193-200. [PMID: 28486140 DOI: 10.1016/j.jcis.2017.05.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 04/28/2017] [Accepted: 05/01/2017] [Indexed: 12/01/2022]
Abstract
Fullerene (C60) aggregation mechanisms in aqueous media require considerable attention in the near future due to the heavy use and application of fullerene-based products within the context of nanotechnology. Such intensive development will result in the release of massive amounts of C60 in aqueous environmental systems in the aggregate form (nC60). In that sense, the aggregation mechanisms need to be fully determined to better evaluate the environmental fate and behavior of C60. To fulfil these needs, the aim of this work was to extensively characterize the aggregation mechanisms of fullerene aggregates in aqueous media by asymmetrical flow field fractionation (AF4) coupled to static light scattering (SLS). We developed a sequential ultrafiltration method that allows the fractionation of the whole nC60 size distribution into different size classes (1-100-200-450-800nm). Following a preliminary analysis by dynamic light scattering (DLS), we optimized several AF4 separation methods to allow screening of these colloidal size classes of nC60 with high efficiency and resolution. The fractal dimension (Df) of this entire size class was characterized directly on-line according to the radius of gyration through a combination of angle-dependent light scattering and fractal dimension analysis. We demonstrate the possible formation and persistence of colloidal populations of nC60 in aqueous media from a few nanometers up to 800nm. Df values ranging from 1.2 to 2.8, based on the nC60 colloidal size range, strongly depend on the method of the sample filtration.
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Affiliation(s)
- Julien Gigault
- Laboratoire Géosciences Rennes, UMR6118, CNRS/Université de Rennes 1, 263 avenue Général Leclerc, 35000 Rennes, France.
| | - Bruno Grassl
- IPREM, UMR 5254 UPPA/CNRS Hélioparc, 2 Avenue du Président Angot, 64053 Pau cedex 09, France.
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He X, Mitrano DM, Nowack B, Bahk YK, Figi R, Schreiner C, Bürki M, Wang J. Agglomeration potential of TiO 2 in synthetic leachates made from the fly ash of different incinerated wastes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 223:616-623. [PMID: 28159397 DOI: 10.1016/j.envpol.2017.01.065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 01/18/2017] [Accepted: 01/22/2017] [Indexed: 06/06/2023]
Abstract
Material flow studies have shown that a large fraction of the engineered nanoparticles used in products end up in municipal waste. In many countries, this municipal waste is incinerated before landfilling. However, the behavior of engineered nanoparticles (ENPs) in the leachates of incinerated wastes has not been investigated so far. In this study, TiO2 ENPs were spiked into synthetic landfill leachates made from different types of fly ash from three waste incineration plants. The synthetic leachates were prepared by standard protocols and two types of modified procedures with much higher dilution ratios that resulted in reduced ionic strength. The pH of the synthetic leachates was adjusted in a wide range (i.e. pH 3 to 11) to understand the effects of pH on agglomeration. The experimental results indicated that agglomeration of TiO2 in the synthetic landfill leachate simultaneously depend on ionic strength, ionic composition and pH. However, when the ionic strength was high, the effects of the other two factors were masked. The zeta potential of the particles was directly related to the size of the TiO2 agglomerates formed. The samples with an absolute zeta potential value < 10 mV were less stable, with the size of TiO2 agglomerates in excess of 1500 nm. It can be deduced from this study that TiO2 ENPs deposited in the landfill may be favored to form agglomerates and ultimately settle from the water percolating through the landfill and thus remain in the landfill.
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Affiliation(s)
- Xu He
- Institute of Environmental Engineering, ETH Zurich, Schafmattstrasse 6, 8093, Zurich, Switzerland; Advanced Analytical Technologies Laboratory, EMPA, Überlandstrasse 129, 8600, Dübendorf, Switzerland
| | - Denise M Mitrano
- Technology and Society Laboratory, EMPA, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Bernd Nowack
- Technology and Society Laboratory, EMPA, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Yeon Kyoung Bahk
- Institute of Environmental Engineering, ETH Zurich, Schafmattstrasse 6, 8093, Zurich, Switzerland; Advanced Analytical Technologies Laboratory, EMPA, Überlandstrasse 129, 8600, Dübendorf, Switzerland
| | - Renato Figi
- Advanced Analytical Technologies Laboratory, EMPA, Überlandstrasse 129, 8600, Dübendorf, Switzerland
| | - Claudia Schreiner
- Advanced Analytical Technologies Laboratory, EMPA, Überlandstrasse 129, 8600, Dübendorf, Switzerland
| | - Melanie Bürki
- Advanced Analytical Technologies Laboratory, EMPA, Überlandstrasse 129, 8600, Dübendorf, Switzerland
| | - Jing Wang
- Institute of Environmental Engineering, ETH Zurich, Schafmattstrasse 6, 8093, Zurich, Switzerland; Advanced Analytical Technologies Laboratory, EMPA, Überlandstrasse 129, 8600, Dübendorf, Switzerland.
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Simelane S, Ngila JC, Dlamini LN. The effect of humic acid on the stability and aggregation kinetics of WO3 nanoparticles. PARTICULATE SCIENCE AND TECHNOLOGY 2017. [DOI: 10.1080/02726351.2017.1302536] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- S. Simelane
- Department of Applied Chemistry, University of Johannesburg, Doornfontein, Johannesburg, South Africa
| | - J. C. Ngila
- Department of Applied Chemistry, University of Johannesburg, Doornfontein, Johannesburg, South Africa
| | - L. N. Dlamini
- Department of Applied Chemistry, University of Johannesburg, Doornfontein, Johannesburg, South Africa
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Levak M, Burić P, Dutour Sikirić M, Domazet Jurašin D, Mikac N, Bačić N, Drexel R, Meier F, Jakšić Ž, Lyons DM. Effect of Protein Corona on Silver Nanoparticle Stabilization and Ion Release Kinetics in Artificial Seawater. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:1259-1266. [PMID: 28075572 DOI: 10.1021/acs.est.6b03161] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In parallel with the growing use of nanoparticle-containing products, their release into the environment over the coming years is expected to increase significantly. With many large population centers located in near-coastal areas, and increasing evidence that various nanoparticles may be toxic to a range of organisms, biota in estuarine and coastal waters may be particularly vulnerable. While size effects may be important in cases, silver nanoparticles have been found to be toxic in large part due to their release of silver ions. However, there is relatively little data available on how nanoparticle coatings can affect silver ion release in estuarine or marine waters. We have found that albumin, as a model for biocorona-forming macromolecules which nanoparticles may encounter in wastewater streams, stabilizes silver colloids from agglomeration in high salinity marine waters by electrosteric repulsion for long time periods. A minimum mass ratio of about 130 for albumin:silver nanoparticles (40 nm) was required for stable dispersion in seawater. Increasing albumin concentration was also found to reduce dissolution of nanoparticles in seawater with up to 3.3 times lower concentrations of silver ions noted. Persistent colloids and slow sustained ion release may have important consequences for biota in these environmental compartments.
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Affiliation(s)
- Maja Levak
- Ruđer Bošković Institute , Center for Marine Research, G. Paliaga 5, 52210 Rovinj, Croatia
| | - Petra Burić
- Ruđer Bošković Institute , Center for Marine Research, G. Paliaga 5, 52210 Rovinj, Croatia
| | - Maja Dutour Sikirić
- Ruđer Bošković Institute , Division of Physical Chemistry, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Darija Domazet Jurašin
- Ruđer Bošković Institute , Division of Physical Chemistry, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Nevenka Mikac
- Ruđer Bošković Institute , Division of Marine and Environmental Research, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Niko Bačić
- Ruđer Bošković Institute , Division of Marine and Environmental Research, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Roland Drexel
- Postnova Analytics GmbH, Max-Planck-Straße 14, 86899 Landsberg am Lech, Germany
| | - Florian Meier
- Postnova Analytics GmbH, Max-Planck-Straße 14, 86899 Landsberg am Lech, Germany
| | - Željko Jakšić
- Ruđer Bošković Institute , Center for Marine Research, G. Paliaga 5, 52210 Rovinj, Croatia
| | - Daniel M Lyons
- Ruđer Bošković Institute , Center for Marine Research, G. Paliaga 5, 52210 Rovinj, Croatia
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Song G, Zhou H, Gu J, Liu Q, Zhang W, Su H, Su Y, Yao Q, Zhang D. Tumor marker detection using surface enhanced Raman spectroscopy on 3D Au butterfly wings. J Mater Chem B 2017; 5:1594-1600. [PMID: 32263931 DOI: 10.1039/c6tb03026b] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Tumor markers are usually over-expressed in human body fluids during the development of cancers. Monitoring tumor markers' level is thus important for early diagnosis and screening of cancers. One way to achieve this is based on the surface enhanced Raman scattering (SERS) technique that can drastically amplify Raman signals of analytes on a plasmonic metal (e.g., Au, Ag, and Cu) surface. However, this promising method suffers from aggregation of plasmonic nanoparticles. Here we report a stable, reproducible, and facile SERS-based readout method to detect an important tumor marker, carcinoembryonic antigen (CEA). This route utilizes Au butterfly wings with natural three dimensional (3D) hierarchical sub-micrometer structures rather than relying on the aggregates of metal nanoparticles. The Au butterfly wings show excellent SERS property and are temperature (80 °C) and time (6 months) stable on a sub-micrometer scale. Thus, the detecting antibodies and enzyme-linked secondary antibodies that are usually applied in conventional enzyme-linked immunosorbent assay (ELISA) can be replaced by chemically synthesized CEA aptamers, significantly simplifying the whole detection process. We demonstrate the feasibility of this method via quantitative detection of clinical CEA level in human body fluids. This work thus demonstrates a promising tumor marker detection technique based on a hierarchical sub-micrometer SERS structure, which could be useful for the mass screening of early stage cancers.
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Affiliation(s)
- Guofen Song
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
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Avilov S, Lamon L, Hristozov D, Marcomini A. Improving the prediction of environmental fate of engineered nanomaterials by fractal modelling. ENVIRONMENT INTERNATIONAL 2017; 99:78-86. [PMID: 27989526 DOI: 10.1016/j.envint.2016.11.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 11/24/2016] [Accepted: 11/27/2016] [Indexed: 06/06/2023]
Abstract
A critical analysis of the available engineered nanomaterials (ENMs) environmental fate modelling approaches indicates that existing tools do not satisfactorily account for the complexities of nanoscale phenomena. Fractal modelling (FM) can complement existing kinetic fate models by including more accurate interpretations of shape and structure, density and collision efficiency parameters to better describe homo- and heteroaggregation. Pathways to including hierarchical symmetry concepts and a route to establishing a structural classification of nanomaterials based on FM are proposed.
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Affiliation(s)
- S Avilov
- Department of Solid State Physics and Nanostructures, Voronezh State University, Universitetskaya pl., 1, 394006 Voronezh, Russia
| | - L Lamon
- Department of Environmental Sciences, Informatics & Statistics, University Ca' Foscari of Venice, 30172 Mestre (VE), Italy
| | - D Hristozov
- Department of Environmental Sciences, Informatics & Statistics, University Ca' Foscari of Venice, 30172 Mestre (VE), Italy
| | - A Marcomini
- Department of Environmental Sciences, Informatics & Statistics, University Ca' Foscari of Venice, 30172 Mestre (VE), Italy.
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37
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Lv X, Tao J, Chen B, Zhu X. Roles of temperature and flow velocity on the mobility of nano-sized titanium dioxide in natural waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 565:849-856. [PMID: 26970667 DOI: 10.1016/j.scitotenv.2016.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 03/01/2016] [Accepted: 03/01/2016] [Indexed: 06/05/2023]
Abstract
While environmental fate and transport of nano-sized TiO2 (nTiO2) attracts intensive attention, how physical characters of natural waters, such as water type, temperature, and flowing velocity, impact the mobility of nTiO2 remain unclear now. In this work, ultrapure water, lake water, and sea water were chosen to investigate the aggregation and sedimentation behaviors of nTiO2 under a series of environmental conditions with varying feeding concentration, water temperature, and flow velocity. In general, the results demonstrated poorer stability of nTiO2 in sea water than other water types. After a 7-hour test (initial nTiO2=100mg/L), the nTiO2 hydrodynamic sizes, sedimentation rates, and zeta potentials differed significantly in ultrapure water (545nm, 24%, -30mV), lake water (1374nm, 56%, -16mV) and sea water (2152nm, 87%, -3mV). Meanwhile, the study exhibited significant influences of initial nTiO2 concentration (10-100mg/L) on the behaviors of nTiO2 in sea water and lake water but negligible impact on ultrapure water. Ambient temperature also directly affected the aggregation and sedimentation rates of nTiO2, both hydrodynamic diameters and sedimentation of nTiO2 increased markedly with the rising ambient temperatures (10-60°C). In contrast, increasing water flow velocity (0-0.32m/s) lowered the hydrodynamic diameters and sedimentation rates of nTiO2, although the influence of flowing velocity on the aggregation of nTiO2 was partially reversible.
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Affiliation(s)
- Xiaohui Lv
- Harbin Institute of Technology Shenzhen Graduate School, China; Graduate School at Shenzhen, Tsinghua University, China
| | - Jing Tao
- Harbin Institute of Technology Shenzhen Graduate School, China; Graduate School at Shenzhen, Tsinghua University, China
| | - Baiyang Chen
- Harbin Institute of Technology Shenzhen Graduate School, China.
| | - Xiaoshan Zhu
- Graduate School at Shenzhen, Tsinghua University, China.
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Heinlaan M, Muna M, Knöbel M, Kistler D, Odzak N, Kühnel D, Müller J, Gupta GS, Kumar A, Shanker R, Sigg L. Natural water as the test medium for Ag and CuO nanoparticle hazard evaluation: An interlaboratory case study. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 216:689-699. [PMID: 27357482 DOI: 10.1016/j.envpol.2016.06.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 06/15/2016] [Accepted: 06/16/2016] [Indexed: 05/14/2023]
Abstract
Engineered nanoparticles (NPs) have realistic potential of reaching natural waterbodies and of exerting toxicity to freshwater organisms. The toxicity may be influenced by the composition of natural waters as crucial NP properties are influenced by water constituents. To tackle this issue, a case study was set up in the framework of EU FP7 NanoValid project, performing an interlaboratory hazard evaluation of NPs in natural freshwater. Ag and CuO NPs were selected as model NPs because of their potentially high toxicity in the freshwater. Daphnia magna (OECD202) and Danio rerio embryo (OECD236) assays were used to evaluate NP toxicity in natural water, sampled from Lake Greifen and Lake Lucerne (Switzerland). Dissolution of the NPs was evaluated by ultrafiltration, ultracentrifugation and metal specific sensor bacteria. Ag NP size was stable in natural water while CuO NPs agglomerated and settled rapidly. Ag NP suspensions contained a large fraction of Ag(+) ions and CuO NP suspensions had low concentration of Cu(2+) ions. Ag NPs were very toxic (48 h EC50 1-5.5 μg Ag/L) to D. magna as well as to D. rerio embryos (96 h EC50 8.8-61 μg Ag/L) in both standard media and natural waters with results in good agreement between laboratories. CuO NP toxicity to D. magna differed significantly between the laboratories with 48 h EC50 0.9-11 mg Cu/L in standard media, 5.7-75 mg Cu/L in Lake Greifen and 5.5-26 mg Cu/L in Lake Lucerne. No toxicity of CuO NP to zebrafish embryos was detected up to 100 mg/L independent of the medium used. The results show that Ag and CuO NP toxicity may be higher in natural water than in the standard media due to differences in composition. NP environmental hazard evaluation can and should be carried out in natural water to obtain more realistic estimates on the toxicity.
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Affiliation(s)
- Margit Heinlaan
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia.
| | - Marge Muna
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; Department of Materials Science, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Melanie Knöbel
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - David Kistler
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Niksa Odzak
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Dana Kühnel
- Helmholtz Centre for Environmental Research - UFZ, Department of Bioanalytical Ecotoxicology, Permoserstr.15, 04318 Leipzig, Germany
| | - Josefine Müller
- Helmholtz Centre for Environmental Research - UFZ, Department of Bioanalytical Ecotoxicology, Permoserstr.15, 04318 Leipzig, Germany
| | - Govind Sharan Gupta
- Institute of Life Sciences, School of Science and Technology, Ahmedabad University, University Road, Navrangpura, Ahmedabad, 380009, Gujarat, India
| | - Ashutosh Kumar
- Institute of Life Sciences, School of Science and Technology, Ahmedabad University, University Road, Navrangpura, Ahmedabad, 380009, Gujarat, India
| | - Rishi Shanker
- Institute of Life Sciences, School of Science and Technology, Ahmedabad University, University Road, Navrangpura, Ahmedabad, 380009, Gujarat, India
| | - Laura Sigg
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland.
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Bessa da Silva M, Abrantes N, Nogueira V, Gonçalves F, Pereira R. TiO2 nanoparticles for the remediation of eutrophic shallow freshwater systems: Efficiency and impacts on aquatic biota under a microcosm experiment. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 178:58-71. [PMID: 27471045 DOI: 10.1016/j.aquatox.2016.07.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 07/02/2016] [Accepted: 07/13/2016] [Indexed: 06/06/2023]
Abstract
The application of nanomaterials (NMs) in the remediation of eutrophic waters, particularly in the control of internal loading of nutrients, has been started, but limited investigations evaluated the effectiveness of these new treatment approaches and of their potential impacts on species from shallow freshwater lakes. The present work investigated, under a microcosm experiment, the application of a TiO2 nanomaterial both for reducing nutrient (mainly phosphorus and nitrogen forms) desorption and release from sediments (preventive treatment-PT) and for eliminating algal blooms (remediation treatment-RT). Furthermore, we also intended to assess the potential impacts of nano-TiO2 application on key freshwater species. The results showed the effectiveness of nano-TiO2 in controlling the release of phosphates from surface sediment and the subsequent reduction of total phosphorus in the water column. A reduction in total nitrogen was also observed. Such changes in nutrient dynamics contributed to a progressive inhibition of development of algae after the application of the NM in PT microcosms. Concerning the ability of nano-TiO2 to interact with algal cells, this interaction has likely occurred, mainly in RT, enhancing the formation of aggregates and their rapid settlement, thus reducing the algal bloom. Both treatments caused deleterious effects on freshwater species. In PT, Daphnia magna and Lemna minor showed a significant inhibition of several endpoints. Conversely, no inhibitory effect on the growth of Chironomus riparius was recorded. In opposite, C. riparius was the most affected species in RT microcosms. Such difference was probably caused by the formation of larger TiO2-algae aggregates in RT, under a high algal density, that rapidly settled in the sediment, becoming less available for pelagic species. In summary, despite the effectiveness of both treatments in controlling internal nutrient loading and in the mitigating algal bloom episodes, their negative effects on biota have to be seriously taken into account.
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Affiliation(s)
- Márcia Bessa da Silva
- Department of Biology, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; CESAM (Centre of Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
| | - Nelson Abrantes
- CESAM (Centre of Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Department of Environment and Planning, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Verónica Nogueira
- Department of Biology & GreenUP/CITAB-UP, Porto, Portugal, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; CIIMAR (Interdisciplinary Centre of Marine and Environmental Research), University of Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal
| | - Fernando Gonçalves
- Department of Biology, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; CESAM (Centre of Environmental and Marine Studies), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Ruth Pereira
- Department of Biology & GreenUP/CITAB-UP, Porto, Portugal, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; CIIMAR (Interdisciplinary Centre of Marine and Environmental Research), University of Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal
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Troester M, Brauch HJ, Hofmann T. Vulnerability of drinking water supplies to engineered nanoparticles. WATER RESEARCH 2016; 96:255-279. [PMID: 27060529 DOI: 10.1016/j.watres.2016.03.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/11/2016] [Accepted: 03/14/2016] [Indexed: 06/05/2023]
Abstract
The production and use of engineered nanoparticles (ENPs) inevitably leads to their release into aquatic environments, with the quantities involved expected to increase significantly in the future. Concerns therefore arise over the possibility that ENPs might pose a threat to drinking water supplies. Investigations into the vulnerability of drinking water supplies to ENPs are hampered by the absence of suitable analytical methods that are capable of detecting and quantifiying ENPs in complex aqueous matrices. Analytical data concerning the presence of ENPs in drinking water supplies is therefore scarce. The eventual fate of ENPs in the natural environment and in processes that are important for drinking water production are currently being investigated through laboratory based-experiments and modelling. Although the information obtained from these studies may not, as yet, be sufficient to allow comprehensive assessment of the complete life-cycle of ENPs, it does provide a valuable starting point for predicting the significance of ENPs to drinking water supplies. This review therefore addresses the vulnerability of drinking water supplies to ENPs. The risk of ENPs entering drinking water is discussed and predicted for drinking water produced from groundwater and from surface water. Our evaluation is based on reviewing published data concerning ENP production amounts and release patterns, the occurrence and behavior of ENPs in aquatic systems relevant for drinking water supply and ENP removability in drinking water purification processes. Quantitative predictions are made based on realistic high-input case scenarios. The results of our synthesis of current knowledge suggest that the risk probability of ENPs being present in surface water resources is generally limited, but that particular local conditions may increase the probability of raw water contamination by ENPs. Drinking water extracted from porous media aquifers are not generally considered to be prone to ENP contamination. In karstic aquifers, however, there is an increased probability that if any ENPs enter the groundwater system they will reach the extraction point of a drinking water treatment plant (DWTP). The ability to remove ENPs during water treatment depends on the specific design of the treatment process. In conventional DWTPs with no flocculation step a proportion of ENPs, if present in the raw water, may reach the final drinking water. The use of ultrafiltration techniques improves drinking water safety with respect to ENP contamination.
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Affiliation(s)
- Martin Troester
- DVGW-Technologiezentrum Wasser, Karlsruher Str. 84, 76139 Karlsruhe, Germany; Department of Environmental Geosciences, University of Vienna, Althanstr. 14 UZA II, 1090 Vienna, Austria.
| | | | - Thilo Hofmann
- Department of Environmental Geosciences, University of Vienna, Althanstr. 14 UZA II, 1090 Vienna, Austria.
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Zhang L, Li J, Yang K, Liu J, Lin D. Physicochemical transformation and algal toxicity of engineered nanoparticles in surface water samples. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 211:132-140. [PMID: 26745398 DOI: 10.1016/j.envpol.2015.12.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 12/19/2015] [Accepted: 12/20/2015] [Indexed: 06/05/2023]
Abstract
Most studies on the behavior and toxicity of engineered nanoparticles (NPs) have been conducted in artificial water with well-controlled conditions, which are dramatically different from natural waters with complex compositions. To better understand the fate and toxicity of NPs in the natural water environment, physicochemical transformations of four NPs (TiO2, ZnO, Ag, and carbon nanotubes (CNTs)) and their toxicities towards a unicellular green alga (Chlorella pyrenoidosa) in four fresh water and one seawater sample were investigated. Results indicated that water chemistry had profound effects on aggregation, dissolution, and algal toxicity of the NPs. The strongest homoaggregation of the NPs was associated with the highest ionic strength, but no obvious correlation was observed between the homoaggregation of NPs and pH or dissolved organic matter content of the water samples. The greatest dissolution of ZnO NPs also occurred in seawater with the highest ionic strength, while the dissolution of Ag NPs varied differently from ZnO NPs. The released Zn(2+) and especially Ag(+) mainly accounted for the algal toxicity of ZnO and Ag NPs, respectively. The NP-cell heteroagglomeration occurred generally for CNTs and Ag NPs, which contributed to the observed nanotoxicity. However, there was no significant correlation between the observed nanotoxicity and the type of NP or the water chemistry. It was thus concluded that the physicochemical transformations and algal toxicities of NPs in the natural water samples were caused by the combined effects of complex water quality parameters rather than any single influencing factor alone. These results will increase our knowledge on the fate and effects of NPs in the aquatic environment.
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Affiliation(s)
- Luqing Zhang
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Jingyi Li
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Kun Yang
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China
| | - Jingfu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 2871, Beijing 100085, China
| | - Daohui Lin
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China.
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Weston-Ford KA, Moseley ML, Hall LJ, Marsh NP, Morgan RM, Barron LP. The retrieval of fingerprint friction ridge detail from elephant ivory using reduced-scale magnetic and non-magnetic powdering materials. Sci Justice 2016; 56:1-8. [PMID: 26746820 DOI: 10.1016/j.scijus.2015.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 10/09/2015] [Accepted: 10/15/2015] [Indexed: 11/19/2022]
Abstract
An evaluation of reduced-size particle powdering methods for the recovery of usable fingermark ridge detail from elephant ivory is presented herein for the first time as a practical and cost-effective tool in forensic analysis. Of two reduced-size powder material types tested, powders with particle sizes ≤ 40 μm offered better chances of recovering ridge detail from unpolished ivory in comparison to a conventional powder material. The quality of developed ridge detail of these powders was also assessed for comparison and automated search suitability. Powder materials and the enhanced ridge detail on ivory were analysed by scanning electron microscopy and energy dispersive X-ray spectroscopy and interactions between their constituents and the ivory discussed. The effect of ageing on the quality of ridge detail recovered showed that the best quality was obtained within 1 week. However, some ridge detail could still be developed up to 28 days after deposition. Cyanoacrylate and fluorescently-labelled cyanoacrylate fuming of ridge detail on ivory was explored and was less effective than reduced-scale powdering in general. This research contributes to the understanding and potential application of smaller scale powdering materials for the development of ridge detail on hard, semi-porous biological material typically seized in wildlife-related crimes.
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Affiliation(s)
- Kelly A Weston-Ford
- Analytical & Environmental Sciences Division, King's College London, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Mark L Moseley
- Specialist Forensic Services, Evidence Recovery Unit, Metropolitan Police Service, 109 Lambeth Road, SE1 7LP London, United Kingdom
| | - Lisa J Hall
- Specialist Forensic Services, Evidence Recovery Unit, Metropolitan Police Service, 109 Lambeth Road, SE1 7LP London, United Kingdom
| | - Nicholas P Marsh
- Specialist Forensic Services, Evidence Recovery Unit, Metropolitan Police Service, 109 Lambeth Road, SE1 7LP London, United Kingdom
| | - Ruth M Morgan
- Department of Security and Crime Science, University College London, 35 Tavistock Square, London WC1H 9EZ, United Kingdom; UCL Centre for the Forensic Sciences, 35 Tavistock Square, London WC1H 9EZ, United Kingdom
| | - Leon P Barron
- Analytical & Environmental Sciences Division, King's College London, 150 Stamford Street, London SE1 9NH, United Kingdom.
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Hua Z, Tang Z, Bai X, Zhang J, Yu L, Cheng H. Aggregation and resuspension of graphene oxide in simulated natural surface aquatic environments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2015; 205:161-169. [PMID: 26071942 DOI: 10.1016/j.envpol.2015.05.039] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Revised: 05/28/2015] [Accepted: 05/28/2015] [Indexed: 06/04/2023]
Abstract
A series of experiments were performed to simulate the environmental behavior and fate of graphene oxide nanoparticles (GONPs) involved in the surface environment relating to divalent cations, natural organic matter (NOM), and hydraulics. The electrokinetic properties and hydrodynamic diameters of GONPs was systematically determined to characterize GONPs stability and the results indicated Ca(2+) (Mg(2+)) significantly destabilized GONPs with high aggregate strength factors (SF) and fractal dimension (FD), whereas NOM decreased aggregate SF with lower FD and improved GONPs stability primarily because of increasing steric repulsion and electrostatic repulsion. Furthermore, the GONPs resuspension from the sand bed into overlying water with shear flow confirmed that the release would be restricted by Ca(2+) (Mg(2+)), however, enhanced by NOM. The interaction energy based on Derjaguin-Landau-Verwey-Overbeek theory verifies the aggregation and resuspension well. Overall, these experiments provide an innovative look and more details to study the behavior and fate of GONPs.
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Affiliation(s)
- Zulin Hua
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Zhiqiang Tang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Xue Bai
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China.
| | - Jianan Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Lu Yu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Haomiao Cheng
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
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Du X, Wang X, You S, Wang Q, Gong X. A case study of aggregation behaviors of titanium dioxide nanoparticles in the presence of dodecylbenzene sulfonate in natural water. J Environ Sci (China) 2015; 36:84-92. [PMID: 26456610 DOI: 10.1016/j.jes.2015.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 05/14/2015] [Accepted: 05/15/2015] [Indexed: 06/05/2023]
Abstract
The present work aims to ascertain the mechanisms of surfactant (dodecylbenzene sulfonate; DBS) effects on the aggregation behaviors of TiO2 nanoparticles (TiO2-NPs) in natural water samples. Aggregation experiments were conducted at a TiO2-NPs concentration of 10mg/L in deionized water and in natural water samples via dynamic light scattering and Zeta potential determination. Average attachment efficiency was calculated to compare the aggregation behaviors of nanoparticles in the two aqueous media. Results showed that the effects of DBS on aggregation could be interpreted by both Derjaguin-Landau-Verwey-Overbeek (DLVO) and non-DLVO mechanisms. In natural water samples, aggregation did not occur rapidly and was able to develop slowly under all conditions, and the roles of DBS were obvious at high DBS concentration owing to the impacts of inherent components of natural water samples, such as colloids and natural organic compounds. Future aggregation studies should concentrate on multi-factor, multi-colloidal and dynamic aspects under similar environmental conditions.
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Affiliation(s)
- Xin Du
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Xiuheng Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Shijie You
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qiuru Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xiaobo Gong
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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45
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Chekli L, Roy M, Tijing LD, Donner E, Lombi E, Shon HK. Agglomeration behaviour of titanium dioxide nanoparticles in river waters: A multi-method approach combining light scattering and field-flow fractionation techniques. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 159:135-142. [PMID: 26067894 DOI: 10.1016/j.jenvman.2015.05.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 05/04/2015] [Accepted: 05/09/2015] [Indexed: 06/04/2023]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) are currently one of the most prolifically used nanomaterials, resulting in an increasing likelihood of release to the environment. This is of concern as the potential toxicity of TiO2 NPs has been investigated in several recent studies. Research into their fate and behaviour once entering the environment is urgently needed to support risk assessment and policy development. In this study, we used a multi-method approach combining light scattering and field-flow fractionation techniques to assess both the aggregation behaviour and aggregate structure of TiO2 NPs in different river waters. Results showed that both the aggregate size and surface-adsorbed dissolved organic matter (DOM) were strongly related to the initial DOM concentration of the tested waters (i.e. R(2) > 0.90) suggesting that aggregation of TiO2 NPs is controlled by the presence and concentration of DOM. The conformation of the formed aggregates was also found to be strongly related to the surface-adsorbed DOM (i.e. R(2) > 0.95) with increasing surface-adsorbed DOM leading to more compact structures. Finally, the concentration of TiO2 NPs remaining in the supernatant after sedimentation of the larger aggregates was found to decrease proportionally with both increasing IS and decreasing DOM concentration, resulting in more than 95% sedimentation in the highest IS sample.
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Affiliation(s)
- L Chekli
- School of Civil and Environmental Engineering, University of Technology, Sydney, Post Box 129, Broadway, NSW 2007, Australia; CRC CARE, PO Box 486, Salisbury, SA 5106, Australia
| | - M Roy
- National Measurement Institute, PO Box 264, Lindfield, NSW 2070, Australia
| | - L D Tijing
- School of Civil and Environmental Engineering, University of Technology, Sydney, Post Box 129, Broadway, NSW 2007, Australia
| | - E Donner
- CRC CARE, PO Box 486, Salisbury, SA 5106, Australia; Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, SA 5095, Australia
| | - E Lombi
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, SA 5095, Australia
| | - H K Shon
- School of Civil and Environmental Engineering, University of Technology, Sydney, Post Box 129, Broadway, NSW 2007, Australia; CRC CARE, PO Box 486, Salisbury, SA 5106, Australia.
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