On the effect of using collision/reaction cell (CRC) technology in single-particle ICP-mass spectrometry (SP-ICP-MS)

被引：69

作者：

Bolea-Fernandez, Eduardo ^{[1
]}

Leite, Diego ^{[2
]}

Rua-Ibarz, Ana ^{[1
,3
]}

Liu, Tong ^{[1
]}

Woods, Glenn ^{[4
]}

Aramendia, Maite ^{[2
,5
]}

Resano, Martin ^{[2
]}

Vanhaecke, Frank ^{[1
]}

机构：

[1] Univ Ghent, Dept Chem Atom & Mass Spectrometry, A&MS Res Unit, Campus Sterre,Krijgslaan 281-512, B-9000 Ghent, Belgium

[2] Univ Zaragoza, Aragon Inst Engn Res I3A, Dept Analyt Chem, Pedro Cerbuna 12, E-50009 Zaragoza, Spain

[3] Flemish Inst Technol Res VITO, Boeretang 200, B-2400 Mol, Belgium

[4] Flemish Inst Technol Res VITO, 5500 Lakeside,Cheadle Royal Business Pk, Stockport SK8 3GR, Cheshire, England

[5] Ctr Univ Defensa Zaragoza, Carretera Huesca S-N, Zaragoza 50090, Spain

来源：

ANALYTICA CHIMICA ACTA | 2019年 / 1077卷

关键词：

Nanoparticles; Single-particle ICP-MS/(MS); Collision/reaction cell; Spectral overlap; Chemical resolution; Peak width; INDUCTIVELY-COUPLED PLASMA; SIZE DISTRIBUTIONS; DATA-ACQUISITION; NANOPARTICLES; TIME; INTERFERENCES; NUMBER; TOOL; QUANTIFICATION; NANOMATERIALS;

D O I：

10.1016/j.aca.2019.05.077

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work, the effects of using collision/reaction cell (CRC) technology in quadrupole-based ICP-MS (ICP-QMS) instrumentation operated in single-particle (SP) mode have been assessed. The influence of (i) various CRC gases, (ii) gas flow rates, (iii) nanoparticle (NP) sizes and (iv) NP types was evaluated using Ag, Au and Pt NPs with both a traditional ICP-QMS instrument and a tandem ICP-mass spectrometer. It has been shown that using CRC technology brings about a significant increase in the NP signal peak width (from 0.5 up to 6 ms). This effect is more prominent for a heavier gas (e.g., NH3) than for a lighter one (e.g., H-2 or He). At a higher gas flow rate and/or for larger particle sizes > 100 nm), the NP signal duration was prolonged to a larger extent. This effect of using CRC technology has been further demonstrated by characterizing custom-made 50 and 200 nm Fe3O4 NPs (originally strongly affected by the occurrence of spectral overlap) using different CRC approaches (H-2 on-mass and NH3 mass-shift). The use of NH3 (monitoring of Fe as the Fe(NH3)(2)(+) reaction product ion at m/z = 90 amu) induces a significant peak broadening compared to that observed when using H-2 (6.10 +/- 1.60 vs. 0.94 +/- 0.49 ms). This extension of transit time can most likely be attributed to the collisions/interactions of the ion cloud generated by a single NP event with the CRC gas and it even precludes 50 nm Fe3O4 NPs to be detected when using the NH3 mass-shift approach. Based on these results, the influence of a longer peak width on the accuracy of SP-ICP-MS measurement data (NP size, particle number density and mass concentration) must be taken into account when using CRC technology as a means to overcome spectral overlap. To mitigate the potential detrimental effect of using CRC technology in the characterization of NPs via SP-ICP-MS(/MS), the use of light gases and low gas flow rates is recommended. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：95 / 106

页数：12

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