Dispersion of natural nanomaterials in surface waters for better characterization of their physicochemical properties by AF4-ICP-MS-TEM

Loosli, Frédéric; Yi, Zybang; Wang, Jingjing; Baalousha, Mohammed

doi:10.1016/j.scitotenv.2019.05.206

Cited by 13 publications

(8 citation statements)

References 48 publications

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“…The chemical components of nanocolloids are shown in Tables S3 and S4, which were different from other studies. 1,3,4 The complex sources and natural variability in environmental systems are responsible for the different compositions of nanocolloids, as verified in our previous studies. 3,5 The nanocolloids extracted from the Haihe River exhibited diameters of approximately 10−60 nm according to the statistical analysis results of the TEM image of nanocolloids (Figure S1a,b).…”

Section: ■ Results and Discussionsupporting

confidence: 78%

“…Nanocolloids (nanoscale colloids with sizes of 1−100 nm) are ubiquitous in natural aquatic environments, including surface waters, underground waters, oceans, wastewaters, and drinking waters. 1−3 Nanocolloids occur in aquatic environments as heteroaggregates 4,5 containing inorganic matter (e.g., mineral particles 6 ) and organic matter (e.g., natural organic matter and polysaccharides 7 ). With similar nanoscale sizes, engineered nanomaterials (ENMs) have developed quickly and have been applied in various fields.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nanocolloids, but Not Humic Acids, Augment the Phytotoxicity of Single-Layer Molybdenum Disulfide Nanosheets

Zeng

Ouyang

et al. 2021

Environ. Sci. Technol.

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Engineered nanomaterials (ENMs), especially transition metal dichalcogenide (TMDC), have received great attention in recent years due to their advantageous properties and applications in various fields and are inevitably released into the environment during their life cycle. However, the effect of natural nanocolloids, widely distributed in the aquatic environment, on the environmental transformation and ecotoxicity of ENMs remains largely unknown. In this study, the effects of natural nanocolloids were compared to humic acid on the environmental transformation and ecotoxicity of single-layer molybdenum disulfide (SLMoS2), a representative TMDC. SLMoS2 with nanocolloids or humic acid (HA) enhanced their dispersion and Mo ion release in deionized water. Nanocolloids induced growth inhibition, reactive oxygen species (ROS) elevation, and cell permeability. Low-toxicity SLMoS2 combined with nanocolloids will enhance the above adverse effects. SLMoS2-nanocolloids induced serious damage (cell distortion and deformation), SLMoS2 internalization, and metabolic perturbation on Chlorella vulgaris (C. vulgaris). In contrast, the addition of HA induced the growth promotion and lower ROS level, inhibited the internalization of SLMoS2, and mitigated metabolic perturbation on C. vulgaris. This work provides insights into the effect of natural nanocolloids on the behaviors and biological risks of ENMs in aquatic environments, deserving substantial future attention.

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Section: ■ Results and Discussionsupporting

confidence: 78%

Section: ■ Introductionmentioning

confidence: 99%

Nanocolloids, but Not Humic Acids, Augment the Phytotoxicity of Single-Layer Molybdenum Disulfide Nanosheets

Zeng

Ouyang

et al. 2021

Environ. Sci. Technol.

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“…The highest mean mass of particulate Pb was 117 ag and the largest detected mean size of TiO 2 was 142 nm. The average size of TiO 2 across all sampling locations was 79.8 nm, which was larger than sizes previously reported (typically between 40 and 50 nm) elsewhere [ 41 , 53 ]. The TiO 2 PNCs were generally within a range reported across various metropoles in a study by Azimzada et al [ 34 ].…”

Section: Resultscontrasting

confidence: 57%

“…Nevertheless, little is known about the interaction of Pb with smaller nanoparticulate matter. One approach to investigate the adsorption of Pb to NMs is the application of flow-field flow fractionation coupled to ICP-MS as demonstrated by Loosli et al [ 53 ]. However, if sufficient mass is accumulated, SP ICP-MS is applicable to study the adsorbed Pb across individual particles and to establish distribution models as demonstrated in this study.…”

Section: Resultsmentioning

confidence: 99%

Analysis of Ti- and Pb-based particles in the aqueous environment of Melbourne (Australia) via single particle ICP-MS

Vega

Lockwood

et al. 2022

Anal Bioanal Chem

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The analysis of natural and anthropogenic nanomaterials (NMs) in the environment is challenging and requires methods capable to identify and characterise structures on the nanoscale regarding particle number concentrations (PNCs), elemental composition, size, and mass distributions. In this study, we employed single particle inductively coupled plasma-mass spectrometry (SP ICP-MS) to investigate the occurrence of NMs in the Melbourne area (Australia) across 63 locations. Poisson statistics were used to discriminate between signals from nanoparticulate matter and ionic background. TiO2-based NMs were frequently detected and corresponding NM signals were calibated with an automated data processing platform. Additionally, a method utilising a larger mass bandpass was developed to screen for particulate high-mass elements. This procedure identified Pb-based NMs in various samples. The effects of different environmental matrices consisting of fresh, brackish, or seawater were mitigated with an aerosol dilution method reducing the introduction of salt into the plasma and avoiding signal drift. Signals from TiO2- and Pb-based NMs were counted, integrated, and subsequently calibrated to determine PNCs as well as mass and size distributions. PNCs, mean sizes, particulate masses, and ionic background levels were compared across different locations and environments. Graphical abstract

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“…Kim and co-workers probed the efficiency of AF4 coupled with a liquid capillary cell for the size determination of natural AgNPs in groundwater [ 46 ]. Loosli et al used a AF4-ICP-MS system for the characterization of natural and engineered AgNPs extracted from river waters [ 47 , 48 ]. The characterization of AgNPs in river and lake waters by AF4 demonstrated the effect of natural organic matter on the stabilization of the nanoparticles [ 49 ].…”

Section: Introductionmentioning

confidence: 99%

Optimization of hyphenated asymmetric flow field-flow fractionation for the analysis of silver nanoparticles in aqueous solutions

et al. 2021

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The extensive use of silver nanoparticles (AgNPs) in consumer products, medicine, and industry leads to their release into the environment. Thus, a characterization of the concentration, size, fate, and toxicity of AgNPs under environmental conditions is required. In this study, we present the characterization and optimization of an asymmetric flow field-flow fractionation (AF4) system coupled with UV/Vis spectrophotometer and dynamic light scattering (DLS) detector as a powerful tool for the size separation and multi-parameter characterization of AgNPs in complex matrices. The hyphenated AF4-UV/Vis-DLS system was first characterized using individual injections of the different size fractions. We used electrostatically stabilized AgNPs of 20-, 50-, and 80-nm nominal diameters coated with lipoic acid. We investigated the effect of applied cross-flows, carrier solutions, focus times, and quantity of injected particles on the nature of the AF4 fractograms and on the integrity of the AgNPs. Best size separation of a 1:1 mixture of 20- and 80-nm AgNPs was achieved using cross-flows of 0.5 and 0.7 mL/min with 1 mM NaCl and 0.05% v/v Mucasol as carrier solutions. We also researched the behavior of AgNPs in natural waters using the hyphenated AF4-UV/Vis-DLS system, under determined optimal conditions. Graphical abstract

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Dispersion of natural nanomaterials in surface waters for better characterization of their physicochemical properties by AF4-ICP-MS-TEM

Cited by 13 publications

References 48 publications

Nanocolloids, but Not Humic Acids, Augment the Phytotoxicity of Single-Layer Molybdenum Disulfide Nanosheets

Nanocolloids, but Not Humic Acids, Augment the Phytotoxicity of Single-Layer Molybdenum Disulfide Nanosheets

Analysis of Ti- and Pb-based particles in the aqueous environment of Melbourne (Australia) via single particle ICP-MS

Optimization of hyphenated asymmetric flow field-flow fractionation for the analysis of silver nanoparticles in aqueous solutions

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