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Pohkrel Y, Adolphs T, Peterson RE, Allebrod U, Ravoo BJ, Arlinghaus HF, Tyler BJ. Influence of Matrix p Ka on Molecular Ion Formation in Matrix-Enhanced Secondary-Ion Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2023; 34:218-226. [PMID: 36565282 DOI: 10.1021/jasms.2c00261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is one of the most important techniques for chemical imaging of nanomaterials and biological samples with high lateral resolution. However, low ionization efficiency limits the detection of many molecules at low concentrations or in very small volumes. One promising approach to increasing the sensitivity of the technique is by the addition of a matrix that promotes ionization and desorption of important analyte molecules. This approach is known as matrix-enhanced secondary-ion mass spectrometry (ME-SIMS). We have investigated the effect of matrix acidity on molecular ion formation in three different biomolecules. A series of cinnamic acid based matrixes that vary in acidity was employed to systematically investigate the influence of matrix acidity on analyte ion formation. The positive ion signal for all three biomolecules showed a strong increase for more acidic matrixes. The most acidic matrix was then vapor-deposited onto mouse brain sections. This led to significant enhancement of lipid signals from the brain. This work indicates that proton donation plays an important role in the formation of molecular ions in ME-SIMS.
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Affiliation(s)
- Yogesh Pohkrel
- Physikalisches Institut and Center for Soft Nanoscience, University of Münster, Wilhelm-Klemm-Straße 10, 48149Münster, Germany
| | - Thorsten Adolphs
- Physikalisches Institut and Center for Soft Nanoscience, University of Münster, Wilhelm-Klemm-Straße 10, 48149Münster, Germany
| | - Richard E Peterson
- Physikalisches Institut and Center for Soft Nanoscience, University of Münster, Wilhelm-Klemm-Straße 10, 48149Münster, Germany
| | - Ute Allebrod
- Organic Chemistry Institute and Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Corrensstrasse 36, 48149Münster, Germany
| | - Bart Jan Ravoo
- Organic Chemistry Institute and Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Corrensstrasse 36, 48149Münster, Germany
| | - Heinrich F Arlinghaus
- Physikalisches Institut and Center for Soft Nanoscience, University of Münster, Wilhelm-Klemm-Straße 10, 48149Münster, Germany
| | - Bonnie J Tyler
- Physikalisches Institut and Center for Soft Nanoscience, University of Münster, Wilhelm-Klemm-Straße 10, 48149Münster, Germany
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Li J, Xie W, Weng L, Chan CK, Chan C. Effects of pretreatment temperature on the analysis of size‐fractionated aerosol particles using ToF‐SIMS. SURF INTERFACE ANAL 2020. [DOI: 10.1002/sia.6751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jinze Li
- Department of Chemical and Biological EngineeringHKUST Hong Kong China
| | - Wenjing Xie
- Division of Environment and SustainabilityHKUST Hong Kong China
| | - Lu‐Tao Weng
- Department of Chemical and Biological EngineeringHKUST Hong Kong China
- Materials Preparation and Characterization FacilityHong Kong University of Science and Technology Hong Kong China
| | - Chak K. Chan
- School of Energy and EnvironmentCity University of Hong Kong Hong Kong China
| | - Chi‐Ming Chan
- Department of Chemical and Biological EngineeringHKUST Hong Kong China
- Division of Environment and SustainabilityHKUST Hong Kong China
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3
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Irimiea C, Faccinetto A, Carpentier Y, Ortega IK, Nuns N, Therssen E, Desgroux P, Focsa C. A comprehensive protocol for chemical analysis of flame combustion emissions by secondary ion mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2018; 32:1015-1025. [PMID: 29603796 DOI: 10.1002/rcm.8133] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/05/2018] [Accepted: 03/21/2018] [Indexed: 06/08/2023]
Abstract
RATIONALE Time-of-flight secondary ion mass spectrometry (TOF-SIMS) is used to provide detailed information on the surface chemical composition of soot. An analytical protocol is proposed and tested on a laboratory flame, and the results are compared with our previous measurements provided by two-step laser mass spectrometry (L2MS). METHODS This work details: (1) the development of a dedicated apparatus to sample combustion products from atmospheric flames and deposit them on substrates suitable for TOF-SIMS analysis; (2) the choice of the deposition substrate and the material of the sampling line, and their effect on the mass spectra; (3) a method to separate the contributions of soot and condensable gas based on impact deposition; and finally (4) post-acquisition data processing. RESULTS Compounds produced during flame combustion are detected on the surface of different deposition substrates and attributed a molecular formula based on mass defect analysis. Silicon and titanium wafers perform similarly, while the surface roughness of glass microfiber filters results in a reduced mass resolution. The mass spectra obtained from the analysis of different locations of the deposits obtained by impaction show characteristic patterns that are attributed to soot/condensable gas. CONCLUSIONS A working method for the analysis of soot samples and the extraction of useful data from mass spectra is proposed. This protocol should help to avoid common experimental issues like sample contamination, while optimizing the setup performance by maximizing the achievable mass resolution.
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Affiliation(s)
- Cornelia Irimiea
- Univ. Lille, CNRS, UMR 8522 - PC2A - Laboratoire de Physico-Chimie des Processus de Combustion et de l'Atmosphère, Lille, France
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules, F-59000, Lille, France
| | - Alessandro Faccinetto
- Univ. Lille, CNRS, UMR 8522 - PC2A - Laboratoire de Physico-Chimie des Processus de Combustion et de l'Atmosphère, Lille, France
| | - Yvain Carpentier
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules, F-59000, Lille, France
| | | | - Nicolas Nuns
- Univ. Lille, CNRS, UMR 2638, Institut M.E. Chevreul, F-59000, Lille, France
| | - Eric Therssen
- Univ. Lille, CNRS, UMR 8522 - PC2A - Laboratoire de Physico-Chimie des Processus de Combustion et de l'Atmosphère, Lille, France
| | - Pascale Desgroux
- Univ. Lille, CNRS, UMR 8522 - PC2A - Laboratoire de Physico-Chimie des Processus de Combustion et de l'Atmosphère, Lille, France
| | - Cristian Focsa
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules, F-59000, Lille, France
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4
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Laser postionization of neutral molecules sputtered using bismuth and argon cluster primary ions. Biointerphases 2018; 13:03B412. [DOI: 10.1116/1.5019653] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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5
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Huang D, Hua X, Xiu GL, Zheng YJ, Yu XY, Long YT. Secondary ion mass spectrometry: The application in the analysis of atmospheric particulate matter. Anal Chim Acta 2017; 989:1-14. [PMID: 28915935 DOI: 10.1016/j.aca.2017.07.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 07/12/2017] [Accepted: 07/18/2017] [Indexed: 12/13/2022]
Abstract
Currently, considerable attention has been paid to atmospheric particulate matter (PM) investigation due to its importance in human health and global climate change. Surface characterization, single particle analysis and depth profiling of PM is important for a better understanding of its formation processes and predicting its impact on the environment and human being. Secondary ion mass spectrometry (SIMS) is a surface technique with high surface sensitivity, high spatial resolution chemical imaging and unique depth profiling capabilities. Recent research shows that SIMS has great potential in analyzing both surface and bulk chemical information of PM. In this review, we give a brief introduction of SIMS working principle and survey recent applications of SIMS in PM characterization. Particularly, analyses from different types of PM sources by various SIMS techniques were discussed concerning their advantages and limitations. The future development and needs of SIMS in atmospheric aerosol measurement are proposed with a perspective in broader environmental sciences.
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Affiliation(s)
- Di Huang
- State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Xin Hua
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Guang-Li Xiu
- State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Yong-Jie Zheng
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
| | - Xiao-Ying Yu
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
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Popczun NJ, Breuer L, Wucher A, Winograd N. On the SIMS Ionization Probability of Organic Molecules. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:1182-1191. [PMID: 28265969 DOI: 10.1007/s13361-017-1624-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 01/30/2017] [Accepted: 02/03/2017] [Indexed: 06/06/2023]
Abstract
The prospect of improved secondary ion yields for secondary ion mass spectrometry (SIMS) experiments drives innovation of new primary ion sources, instrumentation, and post-ionization techniques. The largest factor affecting secondary ion efficiency is believed to be the poor ionization probability (α+) of sputtered material, a value rarely measured directly, but estimated to be in some cases as low as 10-5. Our lab has developed a method for the direct determination of α+ in a SIMS experiment using laser post-ionization (LPI) to detect neutral molecular species in the sputtered plume for an organic compound. Here, we apply this method to coronene (C24H12), a polyaromatic hydrocarbon that exhibits strong molecular signal during gas-phase photoionization. A two-dimensional spatial distribution of sputtered neutral molecules is measured and presented. It is shown that the ionization probability of molecular coronene desorbed from a clean film under bombardment with 40 keV C60 cluster projectiles is of the order of 10-3, with some remaining uncertainty arising from laser-induced fragmentation and possible differences in the emission velocity distributions of neutral and ionized molecules. In general, this work establishes a method to estimate the ionization efficiency of molecular species sputtered during a single bombardment event. Graphical Abstract <!-- [INSERT GRAPHICAL ABSTRACT TEXT HERE] -->.
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Affiliation(s)
- Nicholas J Popczun
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, PA, 16802, USA.
| | - Lars Breuer
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, PA, 16802, USA
| | - Andreas Wucher
- Fakultät für Physik, Universität Duisburg-Essen, 47048, Duisburg, Germany
| | - Nicholas Winograd
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, PA, 16802, USA
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Improved 3D-imaging of a sirolimus/probucol eluting stent coating using laser postionization secondary neutral mass spectrometry and time-of-flight secondary ion mass spectrometry. Biointerphases 2016. [DOI: 10.1116/1.4964687] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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8
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Pelster A, Körsgen M, Kurosawa T, Morita H, Arlinghaus HF. ToF-SIMS and Laser-SNMS Imaging of Heterogeneous Topographically Complex Polymer Systems. Anal Chem 2016; 88:9638-9646. [PMID: 27661389 DOI: 10.1021/acs.analchem.6b02415] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Heterogeneous polymer coatings, such as those used in organic electronics and medical devices, are of increasing industrial importance. In order to advance the development of these types of systems, analytical techniques are required which are able to determine the elemental and molecular spatial distributions, on a nanometer scale, with very high detection efficiency and sensitivity. The goal of this study was to investigate the suitability of laser postionization secondary neutral mass spectrometry (Laser-SNMS) with a 157 nm postionization laser beam to image structured polymer mixtures and compare the results with time-of-flight secondary ion mass spectrometry (ToF-SIMS) measurements using Bi3+ primary ions. The results showed that Laser-SNMS is better suited than ToF-SIMS for unambiguous detection and submicrometer imaging of the wide range of polymers investigated. The data also showed that Laser-SNMS has the advantage of being much more sensitive (in general higher by more than an order of magnitude and peaking at up to 3 orders of magnitude) than ToF-SIMS while also showing superior performance on topographically complex structured insulating surfaces, due to significantly reduced field effects and a higher dynamic range as compared to ToF-SIMS. It is concluded that Laser-SNMS is a powerful complementary technique to ToF-SIMS for the analysis of heterogeneous polymers and other complex structured organic mixtures, providing submicrometer resolution and high sensitivity.
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Affiliation(s)
- Andreas Pelster
- Physikalisches Institut, University of Münster , Wilhelm-Klemm-Str. 10, 48149 Münster, Germany
| | - Martin Körsgen
- Physikalisches Institut, University of Münster , Wilhelm-Klemm-Str. 10, 48149 Münster, Germany
| | - Takako Kurosawa
- Advanced Research Division, Panasonic Corporation , 3-1-1 Yagumo-naka-machi, Moriguchi City, Osaka 570-8501, Japan
| | - Hiromi Morita
- Advanced Research Division, Panasonic Corporation , 3-1-1 Yagumo-naka-machi, Moriguchi City, Osaka 570-8501, Japan
| | - Heinrich F Arlinghaus
- Physikalisches Institut, University of Münster , Wilhelm-Klemm-Str. 10, 48149 Münster, Germany
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Liang Z, Yin Z, Yang H, Xiao Y, Hang W, Li J. Nanoscale surface analysis that combines scanning probe microscopy and mass spectrometry: A critical review. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.07.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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10
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Kucher A, Jackson LM, Lerach JO, Bloom AN, Popczun NJ, Wucher A, Winograd N. Near Infrared (NIR) Strong Field Ionization and Imaging of C60 Sputtered Molecules: Overcoming Matrix Effects and Improving Sensitivity. Anal Chem 2014; 86:8613-20. [DOI: 10.1021/ac501586d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Andrew Kucher
- Chemistry
Department, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - Lauren M. Jackson
- Chemistry
Department, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - Jordan O. Lerach
- Chemistry
Department, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - A. N. Bloom
- Chemistry
Department, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - N. J. Popczun
- Chemistry
Department, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - Andreas Wucher
- Fachbereich
Physik, Universitaet Duisburg-Essen, 47048 Duisburg, Germany
| | - Nicholas Winograd
- Chemistry
Department, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
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Karras G, Lockyer NP. Quantitative surface analysis of a binary drug mixture--suppression effects in the detection of sputtered ions and post-ionized neutrals. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:832-840. [PMID: 24658806 DOI: 10.1007/s13361-014-0847-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Revised: 01/28/2014] [Accepted: 01/29/2014] [Indexed: 06/03/2023]
Abstract
A systematic mass spectrometric study of two of the most common analgesic drugs, paracetamol and ibuprofen, is reported. The drugs were studied by means of secondary ion mass spectrometry (SIMS) and secondary neutral mass spectrometry (SNMS) using laser post-ionization (LPI) both in pure samples and in a two-component mixture. Ion suppression within the two-component system observed in SIMS mode is ameliorated using LPI under room temperature analysis. However, suppression effects are apparent in LPI mode on performing the analysis at cryogenic temperatures, which we attribute to changes in the desorption characteristics of sputtered molecules, which influences the subsequent post-ionization efficiency. This suggests different mechanisms of ion suppression in SIMS and LPI modes.
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12
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Laskin J, Laskin A, Nizkorodov SA. New mass spectrometry techniques for studying physical chemistry of atmospheric heterogeneous processes. INT REV PHYS CHEM 2013. [DOI: 10.1080/0144235x.2012.752904] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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13
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Galla S, Pelster A, Draude F, Arlinghaus HF. Laser-SNMS investigations on pyrene using Ga+, Bi1+, Bi3+and Bi5+as primary ions and different laser wavelengths and laser power densities for photoionization. SURF INTERFACE ANAL 2012. [DOI: 10.1002/sia.4962] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- S. Galla
- Institute of Physics; University of Muenster; Wilhelm-Klemm-Str. 10; 48149; Muenster; Germany
| | - A. Pelster
- Institute of Physics; University of Muenster; Wilhelm-Klemm-Str. 10; 48149; Muenster; Germany
| | - F. Draude
- Institute of Physics; University of Muenster; Wilhelm-Klemm-Str. 10; 48149; Muenster; Germany
| | - H. F. Arlinghaus
- Institute of Physics; University of Muenster; Wilhelm-Klemm-Str. 10; 48149; Muenster; Germany
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