Impact of and correction for instrument sensitivity drift on nanoparticle size measurements by single-particle ICP-MS

被引：14
|
作者：
El Hadri, Hind [1 ,3 ]
Petersen, Elijah J. [2 ]
Winchester, Michael R. [1 ]
机构：
[1] NIST, Div Chem Sci, Mat Measurement Lab, 100 Bur Dr, Gaithersburg, MD 20899 USA
[2] NIST, Biosyst & Biomat Div, Mat Measurement Lab, 100 Bur Dr, Gaithersburg, MD 20899 USA
[3] NIST, Mat Measurement Sci Div, Mat Measurement Lab, 100 Bur Dr, Gaithersburg, MD 20899 USA
来源：
ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2016年 / 408卷 / 19期
关键词：
Drift correction; Gold nanoparticles; Instrument sensitivity drift; Internal standard; Single-particle ICP-MS; PLASMA-MASS SPECTROMETRY; COLLOID ANALYSIS; SILVER; QUANTIFICATION; CAPABILITIES; EFFICIENCY; TOXICITY; RELEASE;
D O I：
10.1007/s00216-016-9397-z
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
The effect of ICP-MS instrument sensitivity drift on the accuracy of nanoparticle (NP) size measurements using single particle (sp)ICP-MS is investigated. Theoretical modeling and experimental measurements of the impact of instrument sensitivity drift are in agreement and indicate that drift can impact the measured size of spherical NPs by up to 25 %. Given this substantial bias in the measured size, a method was developed using an internal standard to correct for the impact of drift and was shown to accurately correct for a decrease in instrument sensitivity of up to 50 % for 30 and 60 nm gold nanoparticles.
引用
收藏
页码：5099 / 5108
页数：10
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