Citation: GAO Ya, GE Xiu-Jie, CHEN Lan, LIU Ren-Xiao, GUO Yu-Ting, GE Guang-Lu. Study on Silver Species Released from Silver Nanotextiles by Single Particle Inductively Coupled Plasma-Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry, ;2021, 49(2): 271-281. doi: 10.19756/j.issn.0253-3820.201563 shu

Study on Silver Species Released from Silver Nanotextiles by Single Particle Inductively Coupled Plasma-Mass Spectrometry

GAO Ya ^1,2 ,
GE Xiu-Jie ^1,2 ,
CHEN Lan ¹ ,
LIU Ren-Xiao ¹ ,
GUO Yu-Ting ^1,, ,
GE Guang-Lu ^1,,

1.
CAS Key Lab of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: GUO Yu-Ting, GE Guang-Lu,
Received Date: 19 September 2020
Revised Date: 1 December 2020

Fund Project: Supported by the National Key Research and Development Program of China (Nos.2017YFF0210003, 2016YFA0200904).

Single particle inductively coupled plasma-mass spectrometry (spICP-MS) was used to study the release behavior of silver from silver nanotextiles, and the effect of extraction and dilution on the release was systematically investigated. The results showed that the silver nanotextiles coild released both silver nanoparticles and silver ions synchronously, but the release behavior in sweat simulant and water was significantly different. The AgNPs released in sweat simulant were larger in size, higher in silver ions concentration than those in water, and the amount of the released silver ions increased with time. More meaningfully, when the extraction solution was diluted with different multiple, the detected AgNPs showed different sizes, where the difference between the larger and small ones could reach several times, and gradually decreased with the increase of the dilution times until the particle size did not decrease further, which was believed to be caused by the depolymerization of particle aggregates during the extraction process. The size of the smallest particles measured by spICP-MS was similar to that measured by SEM. This study showed that the sample preparation and test conditions (including sampling, extraction liquid, dilution etc.) had a significant impact on the results measured by spICP-MS. Therefore, it was necessary to develop a standardized sample release detection and analysis process to ensure the accuracy and consistency of the results. The lower detection limits for particles size and particles concentration of the silver nanoparticles obtained by this method were 16 nm and 2.06×10⁶ particle/L, respectively. While the lower detection limit for Ag⁺ concentration was 0.003 μg/L. The spiked recoveries of the number concentration of AgNPs and the Ag⁺ concentration were 98.7% and 105.8% in sweat stimulant, and 98.9% and 101.7% in water, respectively.
- Silver nanotextiles,
- Silver nanoparticles,
- Single particle inductively coupled plasma-mass spectrometry,
- Release,
- Sweat simulant
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