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Kooij S, Chojnacka A, Bonn D, Corthals GL, van Rijn CJM. Electroless Ionization Mass Spectrometry Using a Compact Electrokinetic Ionization Source. Anal Chem 2024; 96:10978-10985. [PMID: 38917274 PMCID: PMC11238159 DOI: 10.1021/acs.analchem.4c01403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/27/2024]
Abstract
We introduce a new ionization technique for compact, portable mass spectrometers. It consists of a syringe with sample liquid capped by a self-ionizing spray nozzle containing a microfabricated nozzle chip. Interaction of the sample liquid with the nozzle wall results in electrical charging without the need for electronics. Elaborate cleaning procedures are redundant when disposable syringes and mass-fabricated spray nozzles are used. This self-named electroless spray ionization (ELI) technique shows comparable performance to conventional ionization techniques. In contrast to commonly used electrospray ionization, ELI exhibits excellent ionization efficiency for low-conductive solutions such as water or acetonitrile. Due to its compact size and the absence of high-voltage electronics, it can also be readily integrated in other ionization sources. Besides reviewing the main properties of ELI, we showcase the technique's potential for two on-site, ambient mass spectroscopy applications: perfume fingerprinting and fast screening of fungicides on citrus fruits.
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Affiliation(s)
- Stefan Kooij
- Van
der Waals-Zeeman Institute, University of
Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Aleksandra Chojnacka
- Van
’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Daniel Bonn
- Van
der Waals-Zeeman Institute, University of
Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Garry L. Corthals
- Van
’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Cees J. M. van Rijn
- Van
der Waals-Zeeman Institute, University of
Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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2
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Millbern Z, Trettin A, Wu R, Demmler M, Vinueza NR. Synthetic dyes: A mass spectrometry approach and applications. MASS SPECTROMETRY REVIEWS 2024; 43:327-344. [PMID: 36353972 DOI: 10.1002/mas.21818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 10/03/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Synthetic dyes are found in a wide variety of applications today, including but not limited to textiles, foods, and medicine. The analysis of these molecules is pertinent to several fields such as forensics, environmental monitoring, and quality control, all of which require the sensitivity and selectivity of analysis provided by mass spectrometry (MS). Recently, there has been an increase in the implementation of MS evaluation of synthetic dyes by various methods, with the majority of research thus far falling under electrospray ionization and moving toward direct ionization methods. This review covers an overview of the chemistry of synthetic dyes needed for the understanding of MS sample preparation and spectral results, current fields of application, ionization methods, and fragmentation trends and works that have been reported in recent years.
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Affiliation(s)
- Zoe Millbern
- Department of Textile Engineering, Chemistry, and Science, North Carolina State University, Raleigh, North Carolina, USA
| | - Alison Trettin
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina, USA
| | - Rachel Wu
- Department of Textile Engineering, Chemistry, and Science, North Carolina State University, Raleigh, North Carolina, USA
| | - Morgan Demmler
- Department of Textile Engineering, Chemistry, and Science, North Carolina State University, Raleigh, North Carolina, USA
| | - Nelson R Vinueza
- Department of Textile Engineering, Chemistry, and Science, North Carolina State University, Raleigh, North Carolina, USA
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina, USA
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Zhang J, Zhang Y, Xu C, Huang Z, Hu B. Detection of abused drugs in human exhaled breath using mass spectrometry: A review. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2023; 37 Suppl 1:e9503. [PMID: 36914281 DOI: 10.1002/rcm.9503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 02/07/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
RATIONALE Human breath analysis has been attracting increasing interest in the detection of abused drugs in forensic and clinical applications because of its noninvasive sampling and distinctive molecular information. Mass spectrometry (MS)-based approaches have been proven to be powerful tools for accurately analyzing exhaled abused drugs. The major advantages of MS-based approaches include high sensitivity, high specificity, and versatile couplings with various breath sampling methods. METHODS Recent advances in the methodological development of MS analysis of exhaled abused drugs are discussed. Breath collection and sample pretreatment methods for MS analysis are also introduced. RESULTS Recent advances in technical aspects of breath sampling methods are summarized, highlighting active and passive sampling. MS methods for detecting different exhaled abused drugs are reviewed, emphasizing their features, advantages, and limitations. The future trends and challenges in MS-based breath analysis of exhaled abused drugs are also discussed. CONCLUSIONS The coupling of breath sampling methods with MS approaches has been proven to be a powerful tool for the detection of exhaled abused drugs, offering highly attractive results in forensic investigations. MS-based detection of exhaled abused drugs in exhaled breath is a relatively new field and is still in the early stages of methodological development. New MS technologies promise a substantial benefit for future forensic analysis.
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Affiliation(s)
- Jianfeng Zhang
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou, China
| | - Ying Zhang
- Key Laboratory of Forensic Toxicology (Ministry of Public Security), Beijing Municipal Public Security Bureau, Beijing, China
| | - Chunhua Xu
- Guangzhou Hexin Instrument Co., Ltd, Guangzhou, China
| | - Zhengxu Huang
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou, China
| | - Bin Hu
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou, China
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Zacometti C, Tata A, Stella R, Leone S, Pallante I, Merenda M, Catania S, Pozzato N, Piro R. DART-HRMS allows the detection of toxic alkaloids in animal autopsy specimens and guides the selection of confirmatory methods in accidental plant poisoning. Anal Chim Acta 2023; 1264:341309. [PMID: 37230724 DOI: 10.1016/j.aca.2023.341309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 04/26/2023] [Accepted: 04/30/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND In cases of suspected animal poisonings or intoxications, there is the need for high-throughput, rapid and accurate analytical tools capable of giving rapid answers and, thus, speeding up the early stages of investigations. Conventional analyses are very precise, but do not meet the need for rapid answers capable of orienting the decisions and the choice of appropriate countermeasures. In this context, the use of ambient mass spectrometry (AMS) screening methods in toxicology laboratories could satisfy the requests of forensic toxicology veterinarians in a timely manner. RESULTS As a proof of principle, direct analysis in real time high resolution mass spectrometry (DART-HRMS) was applied to a veterinary forensic case in which 12 of a group of 27 sheep and goats died with an acute neurological onset. Because of evidence in the rumen contents, the veterinarians hypothesized an accidental intoxication after ingestion of vegetable materials. The DART-HRMS results showed abundant signals of the alkaloids calycanthine, folicanthidine and calycanthidine, both in the rumen content and at the liver level. The DART-HRMS phytochemical fingerprinting of detached Chimonanthus praecox seeds was also compared with those acquired from the autopsy specimens. Liver, rumen content and seed extracts were then subjected to LC-HRMS/MS analysis to gather additional insights and confirm the putative assignment of calycanthine anticipated by DART-HRMS. HPLC-HRMS/MS confirmed the presence of calycanthine in both rumen contents and liver specimens and allowed its quantification, ranging from 21.3 to 46.9 mg kg-1 in the latter. This is the first report detailing the quantification of calycanthine in liver after a deadly intoxication event. SIGNIFICANCE AND NOVELTY Our study illustrates the potential of DART-HRMS to offer a rapid and complementary alternative to guide the selection of confirmatory chromatography-MSn strategies in the analysis of autopsy specimens from animals with suspected alkaloid intoxication. This method offers the consequent saving of time and resources over those needed for other methods.
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Affiliation(s)
- Carmela Zacometti
- Laboratorio di Chimica Sperimentale, Istituto Zooprofilattico Sperimentale delle Venezie, Viale Fiume, 78, 36100, Vicenza, VI, Italy
| | - Alessandra Tata
- Laboratorio di Chimica Sperimentale, Istituto Zooprofilattico Sperimentale delle Venezie, Viale Fiume, 78, 36100, Vicenza, VI, Italy.
| | - Roberto Stella
- Laboratorio Farmaci Veterinari e Ricerca, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università, 10, 35020, Legnaro, PD, Italy
| | - Stefania Leone
- Laboratorio di Diagnostica Clinica e Sierologia di Piano, Istituto Zooprofilattico Sperimentale delle Venezie, via Bovolino, 1/C, 37060, Buttapietra, VR, Italy; Laboratorio di Medicina Forense Veterinaria, Istituto Zooprofilattico Sperimentale delle Venezie, Viale Fiume, 78, 36100, Vicenza, VI, Italy
| | - Ivana Pallante
- Laboratorio di Medicina Forense Veterinaria, Istituto Zooprofilattico Sperimentale delle Venezie, Viale Fiume, 78, 36100, Vicenza, VI, Italy
| | - Marianna Merenda
- Laboratorio di Diagnostica Clinica e Sierologia di Piano, Istituto Zooprofilattico Sperimentale delle Venezie, via Bovolino, 1/C, 37060, Buttapietra, VR, Italy
| | - Salvatore Catania
- Laboratorio di Diagnostica Clinica e Sierologia di Piano, Istituto Zooprofilattico Sperimentale delle Venezie, via Bovolino, 1/C, 37060, Buttapietra, VR, Italy
| | - Nicola Pozzato
- Laboratorio di Medicina Forense Veterinaria, Istituto Zooprofilattico Sperimentale delle Venezie, Viale Fiume, 78, 36100, Vicenza, VI, Italy
| | - Roberto Piro
- Laboratorio di Chimica Sperimentale, Istituto Zooprofilattico Sperimentale delle Venezie, Viale Fiume, 78, 36100, Vicenza, VI, Italy
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Shi L, Habib A, Bi L, Hong H, Begum R, Wen L. Ambient Ionization Mass Spectrometry: Application and Prospective. Crit Rev Anal Chem 2022:1-50. [PMID: 36206159 DOI: 10.1080/10408347.2022.2124840] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Abstract
Mass spectrometry (MS) is a formidable analytical tool for the analysis of non-polar to polar compounds individually and/or from mixtures, providing information on the molecular weights and chemical structures of the analytes. During the last more than one-decade, ambient ionization mass spectrometry (AIMS) has developed quickly, producing a wide range of platforms and proving scientific improvements in a variety of domains, from biological imaging to quick quality control. These methods have made it possible to detect target analytes in real time without sample preparation in an open environment, and they can be connected to any MS system with an atmospheric pressure interface. They also have the ability to analyze explosives, illicit drugs, disease diagnostics, drugs in biological samples, adulterants in food and agricultural products, reaction progress, and environmental monitoring. The development of novel ambient ionization techniques, such as probe electrospray ionization, paper spray ionization, and fiber spray ionization, employed even at picolitre to femtolitre solution levels to provide femtogram to attogram levels of the target analytes. The special characteristic of this ambient ion source, which has been extensively used, is the noninvasive property of PESI of examination of biological real samples. The results in the current review supports the idea that AIMS has emerged as a pioneer in MS-based approaches and that methods will continue to be developed along with improvements to existing ones in the near future.
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Affiliation(s)
- Lulu Shi
- Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, China
- China Innovation Instrument Co., Ltd, Ningbo, Zhejiang, China
| | - Ahsan Habib
- China Innovation Instrument Co., Ltd, Ningbo, Zhejiang, China
- The Research Institute of Advanced Technologies, Ningbo University, Ningbo, Zhejiang, China
- Department of Chemistry, University of Dhaka, Dhaka, Bangladesh
| | - Lei Bi
- China Innovation Instrument Co., Ltd, Ningbo, Zhejiang, China
- The Research Institute of Advanced Technologies, Ningbo University, Ningbo, Zhejiang, China
| | - Huanhuan Hong
- China Innovation Instrument Co., Ltd, Ningbo, Zhejiang, China
- The Research Institute of Advanced Technologies, Ningbo University, Ningbo, Zhejiang, China
| | - Rockshana Begum
- Department of Chemistry, Shahjalal University of Science and Technology, Sylhet, Bangladesh
| | - Luhong Wen
- China Innovation Instrument Co., Ltd, Ningbo, Zhejiang, China
- The Research Institute of Advanced Technologies, Ningbo University, Ningbo, Zhejiang, China
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Almheiri S, Ahmad AA, Le Droumaguet B, Pires R, Chehimi MM, Mohamed AA. Spontaneous redox route for gold‐aryl film development of latent fingerprints on nickel coins. SURF INTERFACE ANAL 2021. [DOI: 10.1002/sia.6941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Saeed Almheiri
- Center for Advanced Materials Research, Research Institute of Sciences and Engineering University of Sharjah Sharjah UAE
- Univ Paris Est Créteil, CNRS, UMR 7182, UPEC, F‐94320 Thiais France
| | | | | | - Rémy Pires
- Univ Paris Est Créteil, CNRS, UMR 7182, UPEC, F‐94320 Thiais France
| | | | - Ahmed A. Mohamed
- Center for Advanced Materials Research, Research Institute of Sciences and Engineering University of Sharjah Sharjah UAE
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Ishak S, Dormontt E, Young JM. Microbiomes in forensic botany: a review. Forensic Sci Med Pathol 2021; 17:297-307. [PMID: 33830453 DOI: 10.1007/s12024-021-00362-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2021] [Indexed: 11/24/2022]
Abstract
Fragments of botanical material can often be found at crime scenes (on live and dead bodies, or on incriminating objects) and can provide circumstantial evidence on various aspects of forensic investigations such as determining crime scene locations, times of death or possession of illegal species. Morphological and genetic analysis are the most commonly applied methods to analyze plant fragment evidence but are limited by their low capacity to differentiate between potential source locations, especially at local scales. Here, we review the current applications and limitations of current plant fragment analysis for forensic investigations and introduce the potential of microbiome analysis to complement the existing forensic plant fragment analysis toolkit. The potential for plant fragment provenance identification at geographic scales meaningful to forensic investigations warrants further investigation of the phyllosphere microbiome in this context. To that end we identify three key areas of future research: 1) Retrieval of microbial DNA of sufficient quality and quantity from botanical material; 2) Variability of the phyllosphere microbiome at different taxonomic and spatial scales, with explicit reference to assignment capacity; 3) Impacts on assignment capacity of time, seasonality and movement of fragments between locations. The development of robust microbiome analysis tools for forensic purposes in botanical material could increase the evidentiary value of the botanical evidence commonly encountered in casework, aiding in the identification of crime scene locations.
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Affiliation(s)
- Sarah Ishak
- Département de Biologie, Faculté des Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada.
| | - Eleanor Dormontt
- Advanced DNA, Identification and Forensic Facility, School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia
| | - Jennifer M Young
- College of Science and Engineering, Flinders University, Adelaide, South Australia, Australia
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Walton CL, Kertesz V, Cahill JF. Design and Evaluation of a Tethered, Open Port Sampling Interface for Liquid Extraction-Mass Spectrometry Chemical Analysis. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:198-205. [PMID: 33180483 DOI: 10.1021/jasms.0c00268] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Presented is a tethered, liquid-extraction-sampling interface designed for the mass spectrometric surface sampling/analysis of 3D objects. The tethered, open port sampling interface (TOPSI) incorporates a vacuum line between the sampling probe and ionization source, which enables the ability for an extended, tethered sample transfer line. Herein, several designs of the hand-held TOPSI are presented and evaluated on the basis of the analytical metrics of analyte transport time, peak width, and analyte sensitivity. The best analytical metrics were obtained with capillary flow resistances arranged in a particular order and the vacuum region set at 6.2 kPa. This TOPSI design incorporated a transfer capillary 1 m in length, while retaining a fast analyte transport time (12 s), short signal peak width (5 s baseline-to-baseline), and high analyte signal at 90% of that obtained with a regular open port sampling interface (OPSI). The hand-held TOPSI was demonstrated for the characterization of extracted small molecules and metabolites from the surface of mint and rosemary leaves.
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Affiliation(s)
- Courtney L Walton
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6131, United States
| | - Vilmos Kertesz
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6131, United States
| | - John F Cahill
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6131, United States
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9
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Rapid and sensitive determination of trace fluoroquinolone antibiotics in milk by molecularly imprinted polymer-coated stainless steel sheet electrospray ionization mass spectrometry. Talanta 2020; 219:121282. [DOI: 10.1016/j.talanta.2020.121282] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/27/2020] [Accepted: 05/29/2020] [Indexed: 11/20/2022]
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10
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Gross JH. Saccharose cluster ions as mass calibrants in positive-ion direct analysis in real time-mass spectrometry. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2020; 26:324-331. [PMID: 32921168 DOI: 10.1177/1469066720958535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In positive-ion direct analysis in real time-mass spectrometry (DART-MS), mono-, di, and trisaccharides form [M+NH4]+ ions. Some of them, in addition, yield abundant [Mn+NH4]+ cluster ions (n = 1-6)), and thus, can serve for mass calibration. Saccharose, C12H22O11, the most common sugar, also termed sucrose, is among the [Mn+NH4]+ cluster ion forming species. Saccharose may therefore be employed as a cheap and ubiquitous mass calibration standard. The extent of saccharose cluster ion formation depends on the temperature of the DART gas, sample load, and instrumental parameters like trapping conditions of ions prior to mass analysis. This study identifies optimized experimental conditions and demonstrates the application of saccharose cluster ion-based mass calibration for accurate mass measurements in DART mode on a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer.
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Affiliation(s)
- Jürgen H Gross
- Institute of Organic Chemistry, Heidelberg University, Heidelberg, Germany
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11
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Bonnar C, Popelka-Filcoff R, Kirkbride KP. Armed with the Facts: A Method for the Analysis of Smokeless Powders by Ambient Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:1943-1956. [PMID: 32872785 DOI: 10.1021/jasms.0c00193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The work presented here follows several others in investigating what capabilities, if any, ambient mass spectrometry might have toward the analysis of compounds commonly associated with smokeless propellant powders. This family of instrumental techniques has attracted curiosity from the field of forensic science due to its desirable properties such as rapid collection of information-rich data, combined with minimal requirements for sample mass and preparation. Experiments were conducted with a "Direct Sample Analysis" ion source integrated with a time-of-flight mass spectrometer. The ionization behaviors of nitroglycerin, methyl and ethyl centralite, akardite, diphenylamine, nitrosodiphenylamine, and nitrated diphenylamine derivatives were investigated specifically, with accurate-mass data presented for each. Diphenylamine standards were used to demonstrate the performance of this instrument, which exhibited good response linearity across 1 order of magnitude and sub-nanogram detection limits. Thirty smokeless powder extracts, recovered from ammunition potentially in circulation within Australia, were analyzed to determine whether the technique is appropriate for rapid analysis of smokeless powder particles. Results demonstrated that the technique might be applied to compare individual particles with each other or to a database. Such a capability may be of value in the examination of explosive devices containing smokeless powder, postblast residues therefrom, or muzzle discharge from a close-range shooting. However, when efforts were made to detect residues from the hands of a volunteer shooter, only some returned positive results, and a high background signal from the sample collection stub indicates that detection using this instrument is thus far insufficiently reliable.
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Affiliation(s)
- Callum Bonnar
- College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia
| | - Rachel Popelka-Filcoff
- College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia
- School of Earth Sciences, Faculty of Science, The University of Melbourne, Melbourne, Victoria 3053, Australia
| | - K Paul Kirkbride
- College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia
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12
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Borden SA, Palaty J, Termopoli V, Famiglini G, Cappiello A, Gill CG, Palma P. MASS SPECTROMETRY ANALYSIS OF DRUGS OF ABUSE: CHALLENGES AND EMERGING STRATEGIES. MASS SPECTROMETRY REVIEWS 2020; 39:703-744. [PMID: 32048319 DOI: 10.1002/mas.21624] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 01/22/2020] [Indexed: 06/10/2023]
Abstract
Mass spectrometry has been the "gold standard" for drugs of abuse (DoA) analysis for many decades because of the selectivity and sensitivity it affords. Recent progress in all aspects of mass spectrometry has seen significant developments in the field of DoA analysis. Mass spectrometry is particularly well suited to address the rapidly proliferating number of very high potency, novel psychoactive substances that are causing an alarming number of fatalities worldwide. This review surveys advancements in the areas of sample preparation, gas and liquid chromatography-mass spectrometry, as well as the rapidly emerging field of ambient ionization mass spectrometry. We have predominantly targeted literature progress over the past ten years and present our outlook for the future. © 2020 Periodicals, Inc. Mass Spec Rev.
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Affiliation(s)
- Scott A Borden
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, Nanaimo, BC, V9R 5S5, Canada
- Department of Chemistry, University of Victoria, Victoria, BC, V8P 5C2, Canada
| | - Jan Palaty
- LifeLabs Medical Laboratories, Burnaby, BC, V3W 1H8, Canada
| | - Veronica Termopoli
- LC-MS Laboratory, Department of Pure and Applied Sciences, University of Urbino Carlo Bo, 61029, Urbino, Italy
| | - Giorgio Famiglini
- LC-MS Laboratory, Department of Pure and Applied Sciences, University of Urbino Carlo Bo, 61029, Urbino, Italy
| | - Achille Cappiello
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, Nanaimo, BC, V9R 5S5, Canada
- LC-MS Laboratory, Department of Pure and Applied Sciences, University of Urbino Carlo Bo, 61029, Urbino, Italy
| | - Chris G Gill
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, Nanaimo, BC, V9R 5S5, Canada
- Department of Chemistry, University of Victoria, Victoria, BC, V8P 5C2, Canada
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, 98195
| | - Pierangela Palma
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, Nanaimo, BC, V9R 5S5, Canada
- LC-MS Laboratory, Department of Pure and Applied Sciences, University of Urbino Carlo Bo, 61029, Urbino, Italy
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Sisco E, Najarro M, Burns A. Quantifying the effectiveness of cleaning agents at removing drugs from laboratory benches and floor tiles. Forensic Chem 2019. [DOI: 10.1016/j.forc.2018.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Increased throughput and ultra-high mass resolution in DESI FT-ICR MS imaging through new-generation external data acquisition system and advanced data processing approaches. Sci Rep 2019; 9:8. [PMID: 30626890 PMCID: PMC6327097 DOI: 10.1038/s41598-018-36957-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 11/28/2018] [Indexed: 12/20/2022] Open
Abstract
Desorption electrospray ionisation-mass spectrometry imaging (DESI-MSI) is a powerful imaging technique for the analysis of complex surfaces. However, the often highly complex nature of biological samples is particularly challenging for MSI approaches, as options to appropriately address molecular complexity are limited. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) offers superior mass accuracy and mass resolving power, but its moderate throughput inhibits broader application. Here we demonstrate the dramatic gains in mass resolution and/or throughput of DESI-MSI on an FT-ICR MS by developing and implementing a sophisticated data acquisition and data processing pipeline. The presented pipeline integrates, for the first time, parallel ion accumulation and detection, post-processing absorption mode Fourier transform and pixel-by-pixel internal re-calibration. To achieve that, first, we developed and coupled an external high-performance data acquisition system to an FT-ICR MS instrument to record the time-domain signals (transients) in parallel with the instrument’s built-in electronics. The recorded transients were then processed by the in-house developed computationally-efficient data processing and data analysis software. Importantly, the described pipeline is shown to be applicable even to extremely large, up to 1 TB, imaging datasets. Overall, this approach provides improved analytical figures of merits such as: (i) enhanced mass resolution at no cost in experimental time; and (ii) up to 4-fold higher throughput while maintaining a constant mass resolution. Using this approach, we not only demonstrate the record 1 million mass resolution for lipid imaging from brain tissue, but explicitly show such mass resolution is required to resolve the complexity of the lipidome.
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15
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Ambient Pressure Laser Desorption—Chemical Ionization Mass Spectrometry for Fast and Reliable Detection of Explosives, Drugs, and Their Precursors. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8060933] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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16
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Abstract
Ambient mass spectrometry has evolved rapidly over the past decade, yielding a plethora of platforms and demonstrating scientific advancements across a range of fields from biological imaging to rapid quality control. These techniques have enabled real-time detection of target analytes in an open environment with no sample preparation and can be coupled to any mass analyzer with an atmospheric pressure interface; capabilities of clear interest to the defense, customs and border control, transportation security, and forensic science communities. This review aims to showcase and critically discuss advances in ambient mass spectrometry for the trace detection of explosives.
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Affiliation(s)
- Thomas P Forbes
- National Institute of Standards and Technology, Materials Measurement Science Division, Gaithersburg, MD, USA.
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Pavlovich MJ, Musselman B, Hall AB. Direct analysis in real time-Mass spectrometry (DART-MS) in forensic and security applications. MASS SPECTROMETRY REVIEWS 2018; 37:171-187. [PMID: 27271453 DOI: 10.1002/mas.21509] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 04/28/2016] [Indexed: 05/10/2023]
Abstract
Over the last decade, direct analysis in real time (DART) has emerged as a viable method for fast, easy, and reliable "ambient ionization" for forensic analysis. The ability of DART to generate ions from chemicals that might be present at the scene of a criminal activity, whether they are in the gas, liquid, or solid phase, with limited sample preparation has made the technology a useful analytical tool in numerous forensic applications. This review paper summarizes many of those applications, ranging from the analysis of trace evidence to security applications, with a focus on providing the forensic scientist with a resource for developing their own applications. The most common uses for DART in forensics are in studying seized drugs, drugs of abuse and their metabolites, bulk and detonated explosives, toxic chemicals, chemical warfare agents, inks and dyes, and commercial plant and animal products that have been adulterated for economic gain. This review is meant to complement recent reviews that have described the fundamentals of the ionization mechanism and the general use of DART. We describe a wide range of forensic applications beyond the field of analyzing drugs of abuse, which dominates the literature, including common experimental and data analysis methods. © 2016 Wiley Periodicals, Inc. Mass Spec Rev 37:171-187, 2018.
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Affiliation(s)
- Matthew J Pavlovich
- Department of Chemistry and Chemical Biology, Barnett Institute for Chemical and Biological Analysis, Northeastern University, Boston 02115, Massachusetts
| | | | - Adam B Hall
- Department of Chemistry and Chemical Biology, Barnett Institute for Chemical and Biological Analysis, Northeastern University, Boston 02115, Massachusetts
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18
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Ewing AV, Kazarian SG. Infrared spectroscopy and spectroscopic imaging in forensic science. Analyst 2018; 142:257-272. [PMID: 27905577 DOI: 10.1039/c6an02244h] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Infrared spectroscopy and spectroscopic imaging, are robust, label free and inherently non-destructive methods with a high chemical specificity and sensitivity that are frequently employed in forensic science research and practices. This review aims to discuss the applications and recent developments of these methodologies in this field. Furthermore, the use of recently emerged Fourier transform infrared (FT-IR) spectroscopic imaging in transmission, external reflection and Attenuated Total Reflection (ATR) modes are summarised with relevance and potential for forensic science applications. This spectroscopic imaging approach provides the opportunity to obtain the chemical composition of fingermarks and information about possible contaminants deposited at a crime scene. Research that demonstrates the great potential of these techniques for analysis of fingerprint residues, explosive materials and counterfeit drugs will be reviewed. The implications of this research for the examination of different materials are considered, along with an outlook of possible future research avenues for the application of vibrational spectroscopic methods to the analysis of forensic samples.
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Affiliation(s)
- Andrew V Ewing
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.
| | - Sergei G Kazarian
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.
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Ambient Desorption/Ionization. Mass Spectrom (Tokyo) 2017. [DOI: 10.1007/978-3-319-54398-7_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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20
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Fang L, Deng J, Yang Y, Wang X, Chen B, Liu H, Zhou H, Ouyang G, Luan T. Coupling solid-phase microextraction with ambient mass spectrometry: Strategies and applications. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.05.025] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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21
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Bailey M, Randall EC, Costa C, Salter TL, Race AM, de Puit M, Koeberg M, Baumert M, Bunch J. Analysis of Urine, Oral fluid and Fingerprints by Liquid Extraction Surface Analysis Coupled to High Resolution MS and MS/MS - Opportunities for Forensic and Biomedical Science. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2016; 2016:3373-3382. [PMID: 27990179 PMCID: PMC5156400 DOI: 10.1039/c6ay00782a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Liquid Extraction Surface Analysis (LESA) is a new, high throughput tool for ambient mass spectrometry. A solvent droplet is deposited from a pipette tip onto a surface and maintains contact with both the surface and the pipette tip for a few seconds before being re-aspirated. The technique is particularly suited to the analysis of trace materials on surfaces due to its high sensitivity and low volume of sample removal. In this work, we assess the suitability of LESA for obtaining detailed chemical profiles of fingerprints, oral fluid and urine, which may be used in future for rapid medical diagnostics or metabolomics studies. We further show how LESA can be used to detect illicit drugs and their metabolites in urine, oral fluid and fingerprints. This makes LESA a potentially useful tool in the growing field of fingerprint chemical analysis, which is relevant not only to forensics but also to medical diagnostics. Finally, we show how LESA can be used to detect the explosive material RDX in contaminated artificial fingermarks.
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Affiliation(s)
- Melanie Bailey
- Department of Chemistry, University of Surrey, Guildford, GU2 7XH, UK
| | - Elizabeth C Randall
- National Physical Laboratory, Teddington, TW11 0LW, UK; School of Biosciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Catia Costa
- Department of Chemistry, University of Surrey, Guildford, GU2 7XH, UK
| | - Tara L Salter
- National Physical Laboratory, Teddington, TW11 0LW, UK
| | - Alan M Race
- National Physical Laboratory, Teddington, TW11 0LW, UK
| | - Marcel de Puit
- Netherlands Forensic Institute, Laan van Ypenburg 6, 2497 GB, The Hague, The Netherlands; Delft University of Technology, Julianalaan 136, 2628 BL, Delft, The Netherlands
| | - Mattijs Koeberg
- Netherlands Forensic Institute, Laan van Ypenburg 6, 2497 GB, The Hague, The Netherlands
| | - Mark Baumert
- Advion Limited Advion Limited, Harlow Enterprise Hub, Edinburgh Way Harlow, Essex CM20 2NQ, UK
| | - Josephine Bunch
- National Physical Laboratory, Teddington, TW11 0LW, UK; School of Biosciences, University of Birmingham, Birmingham, B15 2TT, UK; School of Pharmacy, University of Nottingham, Nottingham NG7 2RD
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22
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Jakob A, Crawford EA, Gross JH. Detection of polydimethylsiloxanes transferred from silicone-coated parchment paper to baked goods using direct analysis in real time mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2016; 51:298-304. [PMID: 27041660 DOI: 10.1002/jms.3757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 02/01/2016] [Accepted: 02/07/2016] [Indexed: 06/05/2023]
Abstract
The non-stick properties of parchment papers are achieved by polydimethylsiloxane (PDMS) coatings. During baking, PDMS can thus be extracted from the silicone-coated parchment into the baked goods. Positive-ion direct analysis in real time (DART) mass spectrometry (MS) is highly efficient for the analysis of PDMS. A DART-SVP source was coupled to a quadrupole-time-of-flight mass spectrometer to detect PDMS on the contact surface of baked goods after use of silicone-coated parchment papers. DART spectra from the bottom surface of baked cookies and pizzas exhibited signals because of PDMS ions of the general formula [(C2H6SiO)n + NH4 ](+) in the m/z 800-1900 range.
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Affiliation(s)
- Andreas Jakob
- Bruker Daltonik GmbH, Fahrenheitstraße 4, 28359, Bremen, Germany
| | - Elizabeth A Crawford
- Institute of Bioanalytical Chemistry, Saarland University, Campus B2 2, 66123, Saarbrücken, Germany
| | - Jürgen H Gross
- Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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van Dam A, van Beek FT, Aalders MC, van Leeuwen TG, Lambrechts SA. Techniques that acquire donor profiling information from fingermarks — A review. Sci Justice 2016; 56:143-54. [DOI: 10.1016/j.scijus.2015.12.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 11/30/2015] [Accepted: 12/12/2015] [Indexed: 10/22/2022]
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24
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Recent progress on fingerprint visualization and analysis by imaging ridge residue components. Anal Bioanal Chem 2016; 408:2781-91. [DOI: 10.1007/s00216-015-9216-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/14/2015] [Accepted: 11/24/2015] [Indexed: 01/25/2023]
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25
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Direct Analysis in Real Time (DART) of an Organothiophosphate at Ultrahigh Resolution by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry and Tandem Mass Spectrometry. Int J Mol Sci 2016; 17:ijms17010116. [PMID: 26784186 PMCID: PMC4730357 DOI: 10.3390/ijms17010116] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 12/23/2015] [Accepted: 01/08/2016] [Indexed: 01/23/2023] Open
Abstract
Direct analysis in real time (DART) is a recently developed ambient ionization technique for mass spectrometry to enable rapid and sensitive analyses with little or no sample preparation. After swab-based field sampling, the organothiophosphate malathion was analyzed using DART-Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry (MS) and tandem mass spectrometry (MS/MS). Mass resolution was documented to be over 800,000 in full-scan MS mode and over 1,000,000 for an MS/MS product ion produced by collision-induced dissociation of the protonated analyte. Mass measurement accuracy below 1 ppm was obtained for all DART-generated ions that belonged to the test compound in the mass spectra acquired using only external mass calibration. This high mass measurement accuracy, achievable at present only through FTMS, was required for unequivocal identification of the corresponding molecular formulae.
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26
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Gross JH. Letter: High-mass capabilities of positive-ion and negative-ion direct analysis in real time mass spectrometry. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2016; 22:43-48. [PMID: 26863075 DOI: 10.1255/ejms.1409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Of the ionic liquid 1-butyl-3-methylimidazolium (C(+)) tricyanomethide (A(-)) high-mass cluster ions of both positive ([C(n)A(n-1)](+)) and negative ([C(n-1)A(n)](-)) charge were generated and detected by direct analysis in real time (DART) Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry (MS). After optimization of the settings of the DART ionization source and of the mass analyzer ions of m/z values unprecedented in DART-MS were detected. Thus, the upper m/z limits of positive-ion and negative-ion DART- MS were substantially expanded. Negative-ion DART-MS delivered cluster ions up to [C(15)A(16)](-), m/z 3527 (nominal mass of monoisotopic ion), while positive-ion DART-MS even yielded ions up to [C(30)A(29)](+), m/z 6784. The identification of the cluster ions is supported by their accurate mass and exact mass differences corresponding to CA between adjacent cluster ion peaks.
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Affiliation(s)
- Jürgen H Gross
- Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg Germany.
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27
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Comi TJ, Ryu SW, Perry RH. Synchronized Desorption Electrospray Ionization Mass Spectrometry Imaging. Anal Chem 2015; 88:1169-75. [DOI: 10.1021/acs.analchem.5b03010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Troy J. Comi
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Seung Woo Ryu
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Richard H. Perry
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
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28
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Abstract
Developments in forensic mass spectrometry tend to follow, rather than lead, the developments in other disciplines. Examples of techniques having forensic potential born independently of forensic applications include ambient ionization, imaging mass spectrometry, isotope ratio mass spectrometry, portable mass spectrometers, and hyphenated chromatography-mass spectrometry instruments, to name a few. Forensic science has the potential to benefit enormously from developments that are funded by other means, if only the infrastructure and personnel existed to adopt, validate, and implement the new technologies into casework. Perhaps one unique area in which forensic science is at the cutting edge is in the area of chemometrics and the determination of likelihood ratios for the evaluation of the weight of evidence. Such statistical techniques have been developed most extensively for ignitable-liquid residue analyses and isotope ratio analysis. This review attempts to capture the trends, motivating forces, and likely impact of developing areas of forensic mass spectrometry, with the caveat that none of this research is likely to have any real impact in the forensic community unless: (a) The instruments developed are turned into robust black boxes with red and green lights for positives and negatives, respectively, or (b) there are PhD graduates in the workforce who can help adopt these sophisticated techniques.
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29
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Muramoto S. Visualizing mass transport in desorption electrospray ionization using time-of-flight secondary ion mass spectrometry: a look at the geometric configuration of the spray. Analyst 2015; 139:5868-78. [PMID: 25225848 DOI: 10.1039/c4an01481b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Time-of-flight secondary ion mass spectrometry (ToF-SIMS) was used to visualize the transport of analyte molecules desorbed onto a silicon wafer collection substrate by desorption electrospray ionization (DESI). The effect of spray incidence angle, tip height, and probe distance on the concentration and the spatial distribution of desorbed analyte molecules were investigated with the objective of identifying DESI operational parameters that provide more reproducible results by achieving steady ion transmission and minimized material loss. An incidence angle between 25° and 35° with respect to the plane of the surface provided the best compromise between maximizing ambient MS signal and achieving the best reliability. Glancing incidence angles provided higher ambient MS signals through a tighter dispersion of the secondary droplet plume, but run-to-run variability of as much as 40%. On the other hand, steeper incidence angles led to a widening of the lateral dispersion of the secondary droplets and decreased analyte desorption. For all incidence angles, shorter probe distances were preferred since the resulting tighter dispersion of the secondary droplets produced higher ion transmission and therefore higher ambient MS signals. Tip height was found to correlate with the spot size (footprint) of the spray on the surface; changing the tip height from (1 to 2 to 3) mm changed the diameter of the spray impact area from (1.3, 1.8, to 2.1) mm, respectively. For shorter probe to MS inlet distances, larger tip heights increased the ambient MS signal due to increased analyte desorption while maintaining a tighter dispersion of the secondary droplet plume. Equally important to optimizing instrument configuration was the understanding that the deposition of a sample onto the surface resulted in a coffee ring, where the diameter was larger than the spot size of the spray. Higher tip heights may be preferred for a more consistent analyte response since all or a large fraction of the analyte could be sampled to reduce variability in ambient MS response. The study showed that ToF-SIMS can be used as a unique tool for characterizing the transport of desorbed analyte molecules for DESI, and potentially offers insight into new interface designs for improved transmission of analyte into the mass spectrometer.
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Affiliation(s)
- Shin Muramoto
- National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
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30
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Gross JH. Analysis of silicones released from household items and baby articles by direct analysis in real time-mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2015; 26:511-521. [PMID: 25510929 DOI: 10.1007/s13361-014-1042-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Revised: 10/14/2014] [Accepted: 10/14/2014] [Indexed: 06/04/2023]
Abstract
Direct analysis in real time-mass spectrometry (DART-MS) enables screening of articles of daily use made of polydimethylsiloxanes (PDMS), commonly known as silicone rubber, to assess their tendency to release low molecular weight silicone oligomers. DART-MS analyses were performed on a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer. Flexible silicone baking molds, a watch band, and a dough scraper, as baby articles different brands of pacifiers, nipples, and a teething ring have been examined. While somewhat arbitrarily chosen, the set can be regarded as representative of household items, baby articles, and other objects made of silicone rubber. For comparison, two brands of silicone septa and as blanks a glass slide and a latex pacifier were included. Differences between the objects were mainly observed in terms of molecular weight distribution and occasional release of other compounds in addition to PDMS. Other than that, all objects made of silicone rubber released significant amounts of PDMS during DART analysis. To provide a coarse quantification, a calibration based on silicone oil was established, which delivered PDMS losses from 20 μg to >100 μg during the 16-s period per measurement. Also, the extraction of baking molds in rapeseed oil demonstrated a PDMS release at the level of 1 μg mg(-1). These findings indicate a potential health hazard from frequent or long-term use of such items. This work does not intend to blame certain brands of such articles. Nonetheless, a higher level of awareness of this source of daily silicone intake is suggested.
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Affiliation(s)
- Jürgen H Gross
- Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany,
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31
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Gross JH. Polydimethylsiloxane extraction from silicone rubber into baked goods detected by direct analysis in real time mass spectrometry. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2015; 21:313-319. [PMID: 26307711 DOI: 10.1255/ejms.1333] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Flexible baking molds and other household utensils are made of polydimethylsiloxane (PDMS), also known as silicone rubber. PDMS is prone to release oligomers upon elongated contact with fats, e.g., in the process of baking dough. Positive-ion direct analysis in real time (DART) mass spectrometry (MS) provides an efficient tool for the analysis of PDMS up to m/z 3000. Here, DART ionization is employed in combination with Fourier transform ion cyclotron resonance MS to detect PDMS released into muffins when baked in silicone rubber baking molds. Intensive signals caused by PDMS do occur in the m/z 700-1500 range of DART mass spectra obtained from the crusty surface of muffins after the use of such silicone rubber molds. In addition, triacylglyceroles (TAGs) present as natural ingredients of the analyzed muffins were detected as [TAG+NH(4)](+) ions.
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Affiliation(s)
- Jürgen H Gross
- Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
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32
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Contini AE, Flood N, McAteer D, Mai N, Akhavan J. Low hazard small-scale synthesis and chemical analysis of high purity nitroglycerine (NG). RSC Adv 2015. [DOI: 10.1039/c5ra17951c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A two-phase batch method to prepare high purity 1,2,3-propanetriyl trinitrate (nitroglycerine, NG) was evaluated, simplified and adapted specifically for low hazard small-scale synthesis.
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Affiliation(s)
- Alessandro E. Contini
- Centre for Defence Chemistry
- Cranfield University
- Defence Academy of the United Kingdom
- Shrivenham
- UK
| | - Nathan Flood
- Centre for Defence Chemistry
- Cranfield University
- Defence Academy of the United Kingdom
- Shrivenham
- UK
| | - Daniel McAteer
- Centre for Defence Chemistry
- Cranfield University
- Defence Academy of the United Kingdom
- Shrivenham
- UK
| | - Nathalie Mai
- Centre for Defence Chemistry
- Cranfield University
- Defence Academy of the United Kingdom
- Shrivenham
- UK
| | - Jacqueline Akhavan
- Centre for Defence Chemistry
- Cranfield University
- Defence Academy of the United Kingdom
- Shrivenham
- UK
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33
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da Silva Ferreira P, Fernandes de Abreu e Silva D, Augusti R, Piccin E. Forensic analysis of ballpoint pen inks using paper spray mass spectrometry. Analyst 2015; 140:811-9. [DOI: 10.1039/c4an01617c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Paper spray mass spectrometry (PS-MS) is explored as a simple, fast, and effective technique for the forensic analysis of inks in documents.
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Affiliation(s)
- Priscila da Silva Ferreira
- Departamento de Química
- Instituto de Ciências Exatas
- Universidade Federal de Minas Gerais
- Belo Horizonte 31270-901
- Brazil
| | | | - Rodinei Augusti
- Departamento de Química
- Instituto de Ciências Exatas
- Universidade Federal de Minas Gerais
- Belo Horizonte 31270-901
- Brazil
| | - Evandro Piccin
- Departamento de Química
- Instituto de Ciências Exatas
- Universidade Federal de Minas Gerais
- Belo Horizonte 31270-901
- Brazil
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34
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Guo C, Tang F, Chen J, Wang X, Zhang S, Zhang X. Development of dielectric-barrier-discharge ionization. Anal Bioanal Chem 2014; 407:2345-64. [DOI: 10.1007/s00216-014-8281-y] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/16/2014] [Accepted: 10/17/2014] [Indexed: 10/24/2022]
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35
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McKay K, Salter TL, Bowfield A, Walsh JL, Gilmore IS, Bradley JW. Comparison of three plasma sources for ambient desorption/ionization mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:1528-1537. [PMID: 24894843 DOI: 10.1007/s13361-014-0924-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 04/08/2014] [Accepted: 05/03/2014] [Indexed: 06/03/2023]
Abstract
Plasma-based desorption/ionization sources are an important ionization technique for ambient surface analysis mass spectrometry. In this paper, we compare and contrast three competing plasma based desorption/ionization sources: a radio-frequency (rf) plasma needle, a dielectric barrier plasma jet, and a low-temperature plasma probe. The ambient composition of the three sources and their effectiveness at analyzing a range of pharmaceuticals and polymers were assessed. Results show that the background mass spectrum of each source was dominated by air species, with the rf needle producing a richer ion spectrum consisting mainly of ionized water clusters. It was also seen that each source produced different ion fragments of the analytes under investigation: this is thought to be due to different substrate heating, different ion transport mechanisms, and different electric field orientations. The rf needle was found to fragment the analytes least and as a result it was able to detect larger polymer ions than the other sources.
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Affiliation(s)
- Kirsty McKay
- Department of Electrical Engineering and Electronics, University of Liverpool, Brownlow Hill, L69 3GJ, UK
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36
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Salter TLR, Bunch J, Gilmore IS. Importance of Sample Form and Surface Temperature for Analysis by Ambient Plasma Mass Spectrometry (PADI). Anal Chem 2014; 86:9264-70. [DOI: 10.1021/ac502363v] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | - Josephine Bunch
- National Physical Laboratory, Teddington, Middlesex TW11 0LW, United Kingdom
- School
of Pharmacy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Ian S. Gilmore
- National Physical Laboratory, Teddington, Middlesex TW11 0LW, United Kingdom
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37
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Cochran KH, Barry JA, Robichaud G, Muddiman DC. Analysis of trace fibers by IR-MALDESI imaging coupled with high resolving power MS. Anal Bioanal Chem 2014; 407:813-20. [PMID: 25081013 DOI: 10.1007/s00216-014-8042-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 07/10/2014] [Accepted: 07/16/2014] [Indexed: 02/06/2023]
Abstract
Trace evidence is a significant portion of forensic cases. Textile fibers are a common form of trace evidence that are gaining importance in criminal cases. Currently, qualitative techniques that do not yield structural information are primarily used for fiber analysis, but mass spectrometry is gaining an increasing role in this field. Mass spectrometry yields more quantitative structural information about the dye and polymer that can be used for more conclusive comparisons. Matrix-assisted laser desorption electrospray ionization (MALDESI) is a hybrid ambient ionization source being investigated for use in mass spectrometric fiber analysis. In this manuscript, IR-MALDESI was used as a source for mass spectrometry imaging (MSI) of a dyed nylon fiber cluster and single fiber. Information about the fiber polymer as well as the dye were obtained from a single fiber which was on the order of 10 μm in diameter. These experiments were performed directly from the surface of a tape lift of the fiber with a background of extraneous fibers.
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Affiliation(s)
- Kristin H Cochran
- W.M. Keck Fourier Transform Mass Spectrometry Laboratory, Department of Chemistry, North Carolina State University, Raleigh, NC, 27695, USA
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38
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Iwai T, Kakegawa K, Okumura K, Kanamori-Kataoka M, Miyahara H, Seto Y, Okino A. Fundamental properties of a touchable high-power pulsed microplasma jet and its application as a desorption/ionization source for ambient mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2014; 49:522-528. [PMID: 24913404 DOI: 10.1002/jms.3368] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 03/21/2014] [Accepted: 03/25/2014] [Indexed: 06/03/2023]
Abstract
Plasma-based ambient desorption/ionization mass spectrometry (ADI-MS) has attracted considerable attention in many fields because of its capacity for direct sample analyses. In this study, a high-power pulsed microplasma jet (HPPMJ) was developed and investigated as a new plasma desorption/ionization source. In an HPPMJ, a microhollow cathode discharge is generated in a small hole (500 µm in diameter) using a pulsed high-power supply. This system can realize a maximum power density of 5 × 10(8) W/cm(3). The measured electron number density, excitation temperature and afterglow gas temperature of the HPPMJ were 3.7 × 10(15) cm(-3), 7000 K at maximum and less than 60 °C, respectively, which demonstrate that the HPPMJ is a high-energy, high-density plasma source that is comparable with an argon inductively coupled plasma while maintaining a low gas temperature. The HPPMJ causes no observable damage to the target because of its low gas temperature and electrode configuration; thus, we can apply it directly to human skin. To demonstrate the analytical capacity of ADI-MS using an HPPMJ, the plasma was applied to direct solid sample analysis of the active ingredients in pharmaceutical tablets. Caffeine, acetaminophen, ethenzamide, isopropylantipyrine and ibuprofen were successfully detected. Application to living tissue was also demonstrated, and isopropylantipyrine on a finger was successfully analyzed without damaging the skin. The limits of detection (LODs) for caffeine, isopropylantipyrine and ethenzamide were calculated, and LODs at the picogram level were achieved. These results indicate the applicability of the HPPMJ for high-sensitivity analysis of materials on a heat-sensitive surface.
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Affiliation(s)
- Takahiro Iwai
- Department of Energy Sciences, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa, 226-8502, Japan
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Pfeuffer KP, Ray SJ, Hieftje GM. Measurement and visualization of mass transport for the flowing atmospheric pressure afterglow (FAPA) ambient mass-spectrometry source. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:800-808. [PMID: 24658804 PMCID: PMC4031277 DOI: 10.1007/s13361-014-0843-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 01/24/2014] [Accepted: 01/24/2014] [Indexed: 06/03/2023]
Abstract
Ambient desorption/ionization mass spectrometry (ADI-MS) has developed into an important analytical field over the last 9 years. The ability to analyze samples under ambient conditions while retaining the sensitivity and specificity of mass spectrometry has led to numerous applications and a corresponding jump in the popularity of this field. Despite the great potential of ADI-MS, problems remain in the areas of ion identification and quantification. Difficulties with ion identification can be solved through modified instrumentation, including accurate-mass or MS/MS capabilities for analyte identification. More difficult problems include quantification because of the ambient nature of the sampling process. To characterize and improve sample volatilization, ionization, and introduction into the mass spectrometer interface, a method of visualizing mass transport into the mass spectrometer is needed. Schlieren imaging is a well-established technique that renders small changes in refractive index visible. Here, schlieren imaging was used to visualize helium flow from a plasma-based ADI-MS source into a mass spectrometer while ion signals were recorded. Optimal sample positions for melting-point capillary and transmission-mode (stainless steel mesh) introduction were found to be near (within 1 mm of) the mass spectrometer inlet. Additionally, the orientation of the sampled surface plays a significant role. More efficient mass transport resulted for analyte deposits directly facing the MS inlet. Different surfaces (glass slide and rough surface) were also examined; for both it was found that the optimal position is immediately beneath the MS inlet.
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Affiliation(s)
| | | | - Gary M. Hieftje
- Corresponding Author: Department of Chemistry, Indiana University, Bloomington, IN, 47405,
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Gross JH. High-mass cluster ions of ionic liquids in positive-ion and negative-ion DART-MS and their application for wide-range mass calibrations. Anal Bioanal Chem 2014; 406:2853-62. [DOI: 10.1007/s00216-014-7720-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 02/18/2014] [Accepted: 02/21/2014] [Indexed: 11/25/2022]
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Gross JH. Wide-range mass calibration for negative-ion DART mass spectrometry. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2014; 20:155-161. [PMID: 24895775 DOI: 10.1255/ejms.1266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A method for accurate mass calibration covering a wide m/z range in negative-ion direct analysis in real time mass spectrometry (DART-MS) is described. It is based on a commercially available tuning solution (Agilent ES tune mix) normally applied in electrospray ionization. This acetonitrile solution is composed of ammonium trifluoroacetate, betaine, 2,4,6-tris(heptafluoropropyl)-1,3,5-triazine, and various symmetrical hexakis-(fluoroalkoxy)-phosphazenes. Upon addition of 2% (v/vl trifluoroacetic acid in negative-ion DART-MS, this mixture yields negative ions covering a range of m/z 69 to m/z 2834. Validity of the calibration procedure is demonstrated on a Fourier transform ion cyclotron resonance mass spectrometer by application to polyethylene glycol diacid and [60]fullerene. Experimental conditions and a mass reference list are provided.
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42
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Screening for trace explosives by AccuTOF™-DART®: An in-depth validation study. Forensic Sci Int 2013; 232:160-8. [DOI: 10.1016/j.forsciint.2013.07.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 06/18/2013] [Accepted: 07/05/2013] [Indexed: 11/18/2022]
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Direct analysis in real time—a critical review on DART-MS. Anal Bioanal Chem 2013; 406:63-80. [DOI: 10.1007/s00216-013-7316-0] [Citation(s) in RCA: 269] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 08/13/2013] [Accepted: 08/15/2013] [Indexed: 12/24/2022]
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Wiley JS, Shelley JT, Cooks RG. Handheld Low-Temperature Plasma Probe for Portable “Point-and-Shoot” Ambient Ionization Mass Spectrometry. Anal Chem 2013; 85:6545-52. [PMID: 23721516 DOI: 10.1021/ac4013286] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Joshua S. Wiley
- Department of Chemistry
and Center for Analytical Instrumentation
Development (CAID), Purdue University,
560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Jacob T. Shelley
- Department of Chemistry
and Center for Analytical Instrumentation
Development (CAID), Purdue University,
560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - R. Graham Cooks
- Department of Chemistry
and Center for Analytical Instrumentation
Development (CAID), Purdue University,
560 Oval Drive, West Lafayette, Indiana 47907, United States
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Clemons K, Dake J, Sisco E, Verbeck GF. Trace analysis of energetic materials via direct analyte-probed nanoextraction coupled to direct analysis in real time mass spectrometry. Forensic Sci Int 2013; 231:98-101. [PMID: 23890622 DOI: 10.1016/j.forsciint.2013.04.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 04/04/2013] [Accepted: 04/17/2013] [Indexed: 12/19/2022]
Abstract
Direct analysis in real time mass spectrometry (DART-MS) has proven to be a useful forensic tool for the trace analysis of energetic materials. While other techniques for detecting trace amounts of explosives involve extraction, derivatization, solvent exchange, or sample clean-up, DART-MS requires none of these. Typical DART-MS analyses directly from a solid sample or from a swab have been quite successful; however, these methods may not always be an optimal sampling technique in a forensic setting. For example, if the sample were only located in an area which included a latent fingerprint of interest, direct DART-MS analysis or the use of a swab would almost certainly destroy the print. To avoid ruining such potentially invaluable evidence, another method has been developed which will leave the fingerprint virtually untouched. Direct analyte-probed nanoextraction coupled to nanospray ionization-mass spectrometry (DAPNe-NSI-MS) has demonstrated excellent sensitivity and repeatability in forensic analyses of trace amounts of illicit drugs from various types of surfaces. This technique employs a nanomanipulator in conjunction with bright-field microscopy to extract single particles from a surface of interest and has provided a limit of detection of 300 attograms for caffeine. Combining DAPNe with DART-MS provides another level of flexibility in forensic analysis, and has proven to be a sufficient detection method for trinitrotoluene (TNT), RDX, and 1-methylaminoanthraquinone (MAAQ).
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Affiliation(s)
- Kristina Clemons
- Department of Chemistry, University of North Texas, Denton, TX 76203, USA
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Morelato M, Beavis A, Kirkbride P, Roux C. Forensic applications of desorption electrospray ionisation mass spectrometry (DESI-MS). Forensic Sci Int 2013; 226:10-21. [DOI: 10.1016/j.forsciint.2013.01.011] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 11/20/2012] [Accepted: 01/07/2013] [Indexed: 11/29/2022]
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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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Dalgleish JK, Wleklinski M, Shelley JT, Mulligan CC, Ouyang Z, Graham Cooks R. Arrays of low-temperature plasma probes for ambient ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:135-142. [PMID: 23239326 DOI: 10.1002/rcm.6435] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 10/05/2012] [Accepted: 10/08/2012] [Indexed: 06/01/2023]
Abstract
RATIONALE This paper reports the development of arrays of capillary-based low-temperature plasma (LTP) probes for direct sample analysis. These probe arrays allow a higher surface area to be analyzed, increasing the throughput in large sample analysis. Validation of these arrays was performed on illicit, cathinone-based drugs marketed as 'bath salts'. METHODS LTP arrays consisting of 1, 7, and 19 probes were constructed with quartz capillaries and held together with silver epoxy resin adhesive. Three drugs, mephedrone, methylone and methylenedioxypyrovalerone, were analyzed with each plasma ion source and an ion trap mass spectrometer in full MS and in MS/MS positive ion mode. Chemical and thermal footprints were determined for each source. A reactive probe design was used to inject trifluoroacetic anhydride directly into the plasma stream for on-line derivatization. RESULTS Small LTP probes and bundled arrays provide low picogram level limits of detection for mephedrone, methylone and methylenedioxypyrovalerone. Bundling the probes together in larger arrays increases the surface area analyzed by a factor of ten, while maintaining surface temperatures below 40 °C. Selectivity towards mephedrone and methylone was increased using trifluoracetylation under ambient ionization conditions. CONCLUSIONS Low-temperature plasma ionization sources allow rapid detection of illicit 'bath salt' drugs in low amounts. The sources have a larger sampling area that allows faster detection of each analyte, and selectivity towards the selected drug is enhanced by adding reagents directly into the plasma stream.
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Affiliation(s)
- Jon K Dalgleish
- Department of Chemistry, Purdue University, West Lafayette, IN 47907-2084, USA
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Monge ME, Harris GA, Dwivedi P, Fernández FM. Mass Spectrometry: Recent Advances in Direct Open Air Surface Sampling/Ionization. Chem Rev 2013; 113:2269-308. [DOI: 10.1021/cr300309q] [Citation(s) in RCA: 404] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- María Eugenia Monge
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332,
United States
| | - Glenn A. Harris
- Department
of Biochemistry and
the Mass Spectrometry Research Center, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Prabha Dwivedi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332,
United States
| | - Facundo M. Fernández
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332,
United States
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