Citation: SHI Rui-Xin, ZHAO Yan-Ping, GUAN Peng, LIANG Wei-Xin, XUN He. Determination of Silver Nanoparticles in Toothpaste by Single Particle-Inductively Coupled Plasma-Mass Spectrometry with Ultrasonic Extraction[J]. Chinese Journal of Analytical Chemistry, ;2020, 48(4): 523-529. doi: 10.19756/j.issn.0253-3820.191707 shu

Determination of Silver Nanoparticles in Toothpaste by Single Particle-Inductively Coupled Plasma-Mass Spectrometry with Ultrasonic Extraction

1.
Hospital of Stomatology, Jilin University, Changchun 130022, China;
2.
Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis, Guangzhou 510070, China

Received Date: 2 December 2019
Revised Date: 15 January 2020

Fund Project: This work was supported by the National Natural Science Foundation of China (No.21777150) and the Science and Technology Program of Guangzhou (No.201863030042).

A ultrasonic extraction combining single particle-inductively coupled plasma-mass spectrometry (SP-ICP-MS) method was developed to detect the size distribution, number concentrations and mass concentrations of silver nanoparticles (AgNPs) in toothpaste. AgNPs in toothpaste were extracted by sonication with 0.1% Tx-100 solvent, and SP-ICP-MS method was used for the determination of size distribution, number concentration and mass concentration of the AgNPs. The optimum extraction time, accuracy, detection limit of particle size, number concentration and mass concentration of the method were investigated. The result showed that in the optimum extraction time of 10 min, the particle sizes of AgNPs in diluent of toothpaste determined by SP-ICP-MS were consistent with the standard values provided by the manufacturer. The detection limits of particle size, number concentration and mass concentration were 23 nm, 3.9×10⁸ particles/kg and 26 ng/kg, respectively. The spiking recoveries of AgNPs in toothpaste were 86.6%-93.8%. The proposed method showed high sensitivity and accuracy in determination of size distribution and number concentrations of AgNPs in toothpaste.
- Silver nanoparticles,
- Single particle-inductively coupled plasma-mass spectrometry,
- Toothpaste
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1.
沈阳化工大学材料科学与工程学院沈阳 110142