Analysis of Engineered Nanoparticles in Seawater Using ICP-MS-Based Technology: From Negative to Positive Samples

A growing global emission of engineered nanoparticles (ENPs) into the aquatic environment has become an emerging safety concern that requires methods capable of identifying the occurrence and possibly determining the amounts of ENPs. In this study, we employed sector-field inductively coupled mass s...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2023-01, Vol.28 (3), p.994
Main Authors: Kuznetsova, Olga V, Keppler, Bernhard K, Timerbaev, Andrei R
Format: Article
Language:English
Subjects:
Aerosols
Analysis
Anthropogenic factors
Aquatic environment
Chemical analysis
Communication
Composition
Contamination
Dilution
Emissions
engineered nanoparticles
Human influences
ICP-MS
Mass spectrometry
Mass spectroscopy
Membrane filters
Metals
Nanomaterials
Nanoparticles
Nanotechnology
Nitrates
sample preparation
Sea-water
Seawater
Sedimentation
Steel products
Surface water
Ultrafiltration
Water analysis
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Summary:A growing global emission of engineered nanoparticles (ENPs) into the aquatic environment has become an emerging safety concern that requires methods capable of identifying the occurrence and possibly determining the amounts of ENPs. In this study, we employed sector-field inductively coupled mass spectrometry to assess the presence of ENPs in coastal seawater samples collected from the Black Sea in regions suffering different anthropogenic impacts. Ultrafiltration through commercial 3 kDa membrane filters was shown to be feasible to separate the ENPs from the bulk seawater, and the subsequent ultrasound-mediated acidic dissolution makes the metals constituting the ENPs amenable to analysis. This procedure allowed the ENPs bearing Cu, Zn, V, Mo, and Sn to be for the first time quantitated in seashore surface water, their concentration ranging from 0.1 to 1.0 μg L (as metal) and related to the presence of industry and/or urban stress. While these levels are decreased by natural dilution and possible sedimentation, the monitored ENPs remain measurable at a distance of 2 km from the coast. This can be attributed not only to local emission sources but also to some natural backgrounds.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules28030994