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Detection of silver nanoparticles in seawater at ppb levels using UV–visible spectrophotometry with long path cells

Detection of silver nanoparticles in seawater at ppb levels using UV–visible spectrophotometry with long path cells
Detection of silver nanoparticles in seawater at ppb levels using UV–visible spectrophotometry with long path cells
Silver nanoparticles (AgNPs) are emerging contaminants that are difficult to detect in natural waters. UV–visible spectrophotometry is a simple technique that allows detection of AgNPs through analysis of their characteristic surface plasmon resonance band. The detection limit for nanoparticles using up to 10 cm path length cuvettes with UV–visible spectrophotometry is in the 0.1–10 ppm range. This detection limit is insufficiently low to observe AgNPs in natural environments. Here we show how the use of capillary cells with an optical path length up to 200 cm, forms an excellent technique for rapid detection and quantification of non-aggregated AgNPs at ppb concentrations in complex natural matrices such as seawater.
Silver nanoparticles, Seawater, NM300K, Surface plasmon resonance band, UV–visible spectrophotometry, Long path cell
0039-9140
257-260
Lodeiro, Pablo
f6c1011a-06d0-4095-bc45-2e15e9e492d0
Achterberg, Eric P.
685ce961-8c45-4503-9f03-50f6561202b9
El-Shahawi, Mohammed S.
d8455239-8d6a-4565-bcf5-2ee7ff9723ff
Lodeiro, Pablo
f6c1011a-06d0-4095-bc45-2e15e9e492d0
Achterberg, Eric P.
685ce961-8c45-4503-9f03-50f6561202b9
El-Shahawi, Mohammed S.
d8455239-8d6a-4565-bcf5-2ee7ff9723ff

Lodeiro, Pablo, Achterberg, Eric P. and El-Shahawi, Mohammed S. (2017) Detection of silver nanoparticles in seawater at ppb levels using UV–visible spectrophotometry with long path cells. Talanta, 164, 257-260. (doi:10.1016/j.talanta.2016.11.055).

Record type: Article

Abstract

Silver nanoparticles (AgNPs) are emerging contaminants that are difficult to detect in natural waters. UV–visible spectrophotometry is a simple technique that allows detection of AgNPs through analysis of their characteristic surface plasmon resonance band. The detection limit for nanoparticles using up to 10 cm path length cuvettes with UV–visible spectrophotometry is in the 0.1–10 ppm range. This detection limit is insufficiently low to observe AgNPs in natural environments. Here we show how the use of capillary cells with an optical path length up to 200 cm, forms an excellent technique for rapid detection and quantification of non-aggregated AgNPs at ppb concentrations in complex natural matrices such as seawater.

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Accepted/In Press date: 22 November 2016
e-pub ahead of print date: 22 November 2016
Published date: 1 March 2017
Keywords: Silver nanoparticles, Seawater, NM300K, Surface plasmon resonance band, UV–visible spectrophotometry, Long path cell
Organisations: Ocean and Earth Science, Marine Biogeochemistry

Identifiers

Local EPrints ID: 405823
URI: https://eprints.soton.ac.uk/id/eprint/405823
ISSN: 0039-9140
PURE UUID: 5550aefd-dba0-40c4-94a7-59206a5f24e4

Catalogue record

Date deposited: 10 Feb 2017 16:57
Last modified: 02 Dec 2019 19:41

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Contributors

Author: Pablo Lodeiro
Author: Mohammed S. El-Shahawi

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