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Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
Published on: August 23, 2018
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Ionic-liquid-based microextraction method for the determination of silver nanoparticles in consumer products
M Laura Soriano1,2,3, Celia Ruiz-Palomero4, Miguel Valcárcel4,5
1Regional Institute for Applied Chemistry Research, 13004, Ciudad Real, Spain. laura.soriano@uclm.es.
Analytical and Bioanalytical Chemistry
|June 10, 2019
Summary
A new method uses ionic liquid dispersive liquid-liquid microextraction to detect hazardous silver nanoparticles (AgNPs). This technique efficiently extracts AgNPs from complex matrices, preserving their properties for accurate UV-visible spectrometry analysis.
Area of Science:
- Analytical Chemistry
- Nanotechnology
- Environmental Science
Background:
- Silver nanoparticles (AgNPs) are increasingly used in consumer products, necessitating reliable methods for their detection.
- Assessing the safety of AgNPs requires analytical techniques that can quantify them in complex matrices without altering their properties.
Purpose of the Study:
- To develop a simple, efficient, and sensitive method for determining hazardous AgNPs.
- To enable the analysis of AgNPs in real-world samples like food and cosmetics.
Main Methods:
- Ionic liquid (IL) dispersive liquid-liquid microextraction coupled with back-extraction.
- AgNP stabilization with a cationic surfactant and extraction using an imidazolium-based IL.
- Histamine as a dispersing agent for phase transfer and UV-visible spectrometry for detection.
Main Results:
- High recovery rates (75.7%–96.6%) in spiked orange juice and face cream.
- Enrichment factor up to 4, preserving AgNP size and shape.
- Low limit of detection (0.15 μg/mL) and linear response from 3 to 20 μg/mL.
Conclusions:
- The developed method is effective for the quantitative determination of AgNPs.
- The method demonstrates robustness against potential nanointerferents like gold nanoparticles.
- This analytical approach shows significant potential for monitoring engineered nanosilver in consumer products.
Keywords:
ExtractionHistamineImidazolium cationIonic liquidSilver nanoparticlesSurface plasmon resonanceMore Related Videos
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