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Kumar V, Holtum T, Sebena D, Giese M, Voskuhl J, Schlücker S. Ultraviolet resonance Raman spectroscopy with a continuously tunable picosecond laser: Application to the supramolecular ligand guanidiniocarbonyl pyrrole (GCP). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 250:119359. [PMID: 33418476 DOI: 10.1016/j.saa.2020.119359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/14/2020] [Accepted: 12/16/2020] [Indexed: 06/12/2023]
Abstract
We present a UVRR spectroscopy setup which is equipped with a picosecond pulsed laser excitation source continuously tunable in the 210-2600 nm wavelength range. This laser source is based on a three-stage optical parametric amplifier (OPA) pumped by a bandwidth-compressed second harmonic output of an amplified Yb:KGW laser. It provides <15 cm-1 linewidth pulses below 270 nm, which is sufficient for resolving Raman lines of samples in condensed phase studies. For demonstrating the capability of this tunable setup for UVRR spectroscopy we present its application to the artificial ligand guanidiniocarbonyl pyrrole (GCP), a carboxylate binder used in peptide and protein recognition. A UVRR excitation study in the range 244-310 nm was performed for identifying the optimum laser excitation wavelength for UVRR spectroscopy of this ligand (λmax = 298 nm) at submillimolar concentrations (400 µM) in aqueous solution. The optimum UVRR spectrum is observed for laser excitation with λexc = 266 nm. Only in the relatively narrow range of λexc = 266-275 nm UVRR spectra with a sufficiently high signal-to-noise ratio and without severe interference from autofluorescence (AF) were detectable. At longer excitation wavelengths the UVRR signal is masked by AF. At shorter excitation wavelengths the UVRR spectrum is sufficiently separated from the AF, but the resonance enhancement is not sufficient. The presented tunable UVRR setup provides the flexibility to also identify optimum conditions for other supramolecular ligands for peptide/protein recognition.
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Affiliation(s)
- Vikas Kumar
- Physical Chemistry, Department of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) and Center for Medical Biotechnology (ZMB), University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany.
| | - Tim Holtum
- Physical Chemistry, Department of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) and Center for Medical Biotechnology (ZMB), University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany
| | - Daniel Sebena
- Organic Chemistry, Department of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Michael Giese
- Organic Chemistry, Department of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Jens Voskuhl
- Organic Chemistry, Department of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Sebastian Schlücker
- Physical Chemistry, Department of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) and Center for Medical Biotechnology (ZMB), University of Duisburg-Essen, Universitätsstrasse 5, 45141 Essen, Germany.
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2
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Zoleo A, Rossi C, Poggi G, Rossi M, Meneghetti M, Baglioni P. Spotting aged dyes on paper with SERS. Phys Chem Chem Phys 2020; 22:24070-24076. [PMID: 33079093 DOI: 10.1039/d0cp04099a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Surface enhanced Raman spectroscopy (SERS) is a highly sensitive technique for the non- or minimally invasive identification of molecules at very low concentrations. In this work, SERS is exploited using naked laser-ablated gold nanoparticles (AuNPs) for the detection of dyes on artificially aged paper inked with a ballpoint pen. Although several studies on inks with SERS are present in the literature, most of them report on the investigations on freshly prepared products, and less information is present on the detection of aged dyes and inks using SERS. Ballpoint inks are commonly used in daily activities, but have also been employed by several contemporary artists. These inks are very sensitive to light, and they discolor rapidly, making their detection demanding. In the present work, the SERS spectra of a ballpoint pen ink on two types of paper were analyzed after light-induced ageing, and the importance of the dye-AuNP interaction is discussed. The results show that the interpretation of the SERS spectra of the aged samples, such as those of interest in the Cultural Heritage field, is a tricky and delicate operation and that the diffusion of the dyes to the hot spot regions of the plasmonic nanoparticles plays a pivotal role in the detection of degraded ink components. Therefore, appropriate evaluation of the factors affecting the molecule-plasmonic nanoparticle interactions and of the history of the artwork to be analyzed is fundamental to avoiding the misinterpretation of the spectra and, consequently, of the original composition of the analyzed artwork.
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Affiliation(s)
- Alfonso Zoleo
- Department of Chemical Sciences, University of Padova, Italy, Via Marzolo 1, 35131 Padova, Italy.
| | - Cecilia Rossi
- Department of Chemical Sciences, University of Padova, Italy, Via Marzolo 1, 35131 Padova, Italy.
| | - Giovanna Poggi
- Department of Chemistry & CSGI, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy.
| | - Marta Rossi
- Department of Chemistry & CSGI, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy.
| | - Moreno Meneghetti
- Department of Chemical Sciences, University of Padova, Italy, Via Marzolo 1, 35131 Padova, Italy.
| | - Piero Baglioni
- Department of Chemistry & CSGI, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy.
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3
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Saviello D, Trabace M, Alyami A, Mirabile A, Baglioni P, Giorgi R, Iacopino D. Raman Spectroscopy and Surface Enhanced Raman Scattering (SERS) for the Analysis of Blue and Black Writing Inks: Identification of Dye Content and Degradation Processes. Front Chem 2019; 7:727. [PMID: 31709241 PMCID: PMC6823613 DOI: 10.3389/fchem.2019.00727] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 10/10/2019] [Indexed: 11/21/2022] Open
Abstract
Raman spectroscopy and Surface Enhanced Raman Scattering (SERS) were applied to the analysis of blue and black writing inks. SERS was performed by application of plasmonic nanopastes constituted by Ag nanoparticles and Au nanorods directly on inks deposited on paper substrates under laser irradiation of 514 nm. It was found that SERS spectra were largely enhanced compared to Raman spectra and that Ag nanopastes produced much larger enhancements than Au nanopastes, due to a combination of plasmonic resonance, charge transfer, and molecular resonance effects. All analyzed writing inks resulted constituted by Crystal Violet and other triarylmethane dye mixtures, to which sometimes phthalocyanine dyes were also added (for example in Bic pens). SERS was also used for the identification of degradation processes occurring in artificially aged blue pens deposited on paper substrates. It was found that color alteration changed from ink to ink and varied from darkening to discoloration to slight fading, depending on the initial chemical composition. For inks containing Crystal Violet, two mechanisms associated to de-methylation and photo-reduction of excited dye to colorless leuco forms were identified.
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Affiliation(s)
- Daniela Saviello
- Nanotechnology Group, Tyndall National Institute, University College Cork, Cork, Ireland
| | - Maddalena Trabace
- Department of Chemistry & CSGI, University of Florence, Florence, Italy
| | - Abeer Alyami
- Nanotechnology Group, Tyndall National Institute, University College Cork, Cork, Ireland
| | | | - Piero Baglioni
- Department of Chemistry & CSGI, University of Florence, Florence, Italy
| | - Rodorico Giorgi
- Department of Chemistry & CSGI, University of Florence, Florence, Italy
| | - Daniela Iacopino
- Nanotechnology Group, Tyndall National Institute, University College Cork, Cork, Ireland
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4
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Liu X, Li Z. Experimental Research on Class Identification with a New Type of Erasable Gel Pens. J Forensic Sci 2019; 64:1889-1897. [PMID: 31107552 DOI: 10.1111/1556-4029.14072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/08/2019] [Accepted: 04/12/2019] [Indexed: 11/27/2022]
Abstract
A new type of erasable gel pen ink is becoming increasingly popular because of the modifiable characteristics for writing on documents. This study attempts to distinguish 12 types of blue and black erasable gel pens produced by mainstream stationery manufacturers using infrared (IR) visual analysis, Fourier transform infrared (FTIR) analysis, fluorescence analysis, and microspectrophotometry. The results demonstrate that IR visual, FTIR, and fluorescence analysis can be used to help distinguish each type of erasable gel ink. While microspectrophotometry can be used to effectively differentiate the blue gel inks in this study, there are limitations with respect to distinguishing black erasable gel pens. When these four optical analyses methods were used in combination, the gel inks could be accurately distinguished.
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Affiliation(s)
- Xinlai Liu
- Department of Documents Examination, Criminal Investigation Police, University of China, No. 83 Tawan Street, Shenyang City, 110854, China
| | - Zhen Li
- Department of Documents Examination, Criminal Investigation Police, University of China, No. 83 Tawan Street, Shenyang City, 110854, China
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5
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Saviello D, Alyami A, Trabace M, Giorgi R, Baglioni P, Mirabile A, Iacopino D. Plasmonic colloidal pastes for surface-enhanced Raman spectroscopy (SERS) of historical felt-tip pens. RSC Adv 2018; 8:8365-8371. [PMID: 35542010 PMCID: PMC9078556 DOI: 10.1039/c7ra13464a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 02/09/2018] [Indexed: 11/24/2022] Open
Abstract
Surface-enhanced Raman spectroscopy (SERS) has been identified as a suitable technique for the analysis of colorants in works of art. Herein, the application of SERS to the identification of dye compositions in historical felt-tip pens is reported, which is of paramount importance for the development of appropriate conservation protocols for historical drawings. In this study, three pens (pink, green, and blue colors) belonging to the film director Federico Fellini were analyzed. SERS measurements were performed directly on the pen lines drawn on a commercial paper by the deposition of Ag colloidal pastes, which allowed fast in situ dye identification without the need for extraction or hydrolysis treatments. Eosin Y was identified as the only dye present in the pink pen ink, whereas erioglaucine was found to be the main dye component in green and blue pen inks. SERS also resulted in highly efficient identification of the individual dyes erioglaucine, crystal violet, and rhodamine present as a mixture in the blue pen ink. The high SERS sensitivity was ascribed to the plasmonic effects and efficient quenching of the fluorescence interference of dyes. A comparison with contemporary pen inks highlighted minor differences in the chemical composition. These results prove that SERS can be used as a fast and sensitive analytical tool for ink analysis that provides invaluable support for the general assessment of the date, provenance, and originality of the historical drawings as well as for the development of preventive conservation protocols.
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Affiliation(s)
- Daniela Saviello
- Tyndall National Institute, University College Cork Dyke Parade Cork Ireland
| | - Abeer Alyami
- Tyndall National Institute, University College Cork Dyke Parade Cork Ireland
| | | | | | - Piero Baglioni
- Department of Chemistry, CSGI, University of Florence Italy
| | | | - Daniela Iacopino
- Tyndall National Institute, University College Cork Dyke Parade Cork Ireland
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6
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Alyami A, Saviello D, McAuliffe MAP, Mirabile A, Lewis L, Iacopino D. Metal nanoinks as chemically stable surface enhanced scattering (SERS) probes for the analysis of blue BIC ballpoint pens. Phys Chem Chem Phys 2018; 19:14652-14658. [PMID: 28537611 DOI: 10.1039/c7cp01983a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal nanoinks constituted by Ag nanoparticles and Au nanorods were employed as probes for the Surface Enhanced Raman Scattering (SERS) analysis of a blue BIC ballpoint pen. The dye components of the pen ink were first separated by thin layer chromatography (TLC) and subsequently analysed by SERS at illumination wavelengths of 514 nm and 785 nm. Compared to normal Raman conditions, enhanced spectra were obtained for all separated spots, allowing easy identification of phthalocyanine Blue 38 and triarylene crystal violet in the ink mixture. A combination of effects such as molecular resonance, electromagnetic and chemical effects were the contributing factors to the generation of spectra enhanced compared to normal Raman conditions. Enhancement factors (EFs) between 5 × 103 and 3 × 106 were obtained, depending on the combination of SERS probes and laser illumination used. In contrast to previous conflicting reports, the metal nanoinks were chemically stable, allowing the collection of reproducible spectra for days after deposition on TLC plates. In addition and in advance to previously reported SERS probes, no need for additional aggregating agents or correction of electrostatic charge was necessary to induce the generation of enhanced SERS spectra.
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Affiliation(s)
- A Alyami
- Tyndall National Institute, University College Cork, Dyke Parade, Cork, Ireland.
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7
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Suzuki M, Akiba N, Kurosawa K, Akao Y, Higashikawa Y. Differentiation of black writing ink on paper using luminescence lifetime by time-resolved luminescence spectroscopy. Forensic Sci Int 2017; 279:281-287. [PMID: 28938198 DOI: 10.1016/j.forsciint.2017.09.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 08/31/2017] [Accepted: 09/04/2017] [Indexed: 11/28/2022]
Abstract
The time-resolved luminescence spectra and the lifetimes of eighteen black writing inks were measured to differentiate pen ink on altered documents. The spectra and lifetimes depended on the samples. About half of the samples only exhibited short-lived luminescence components on the nanosecond time scale. On the other hand, the other samples exhibited short- and long-lived components on the microsecond time scale. The samples could be classified into fifteen groups based on the luminescence spectra and dynamics. Therefore, luminescence lifetime can be used for the differentiation of writing inks, and luminescence lifetime imaging can be applied for the examination of altered documents.
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Affiliation(s)
- Mototsugu Suzuki
- Forensic Science Laboratory, Metropolitan Police Department, 2-1-1, Kasumigaseki, Chiyoda-ku, Tokyo 100-8929, Japan.
| | - Norimitsu Akiba
- National Research Institute of Police Science, 6-3-1, Kashiwanoha, Kashiwa-shi, Chiba 277-0882, Japan
| | - Kenji Kurosawa
- National Research Institute of Police Science, 6-3-1, Kashiwanoha, Kashiwa-shi, Chiba 277-0882, Japan
| | - Yoshinori Akao
- National Research Institute of Police Science, 6-3-1, Kashiwanoha, Kashiwa-shi, Chiba 277-0882, Japan
| | - Yoshiyasu Higashikawa
- National Research Institute of Police Science, 6-3-1, Kashiwanoha, Kashiwa-shi, Chiba 277-0882, Japan
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8
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Mohamad Asri MN, Hashim NH, Mat Desa WNS, Ismail D. Pearson Product Moment Correlation (PPMC) and Principal Component Analysis (PCA) for objective comparison and source determination of unbranded black ballpoint pen inks. AUST J FORENSIC SCI 2016. [DOI: 10.1080/00450618.2016.1236292] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Nor Hafizah Hashim
- Program Sains Forensik, Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Wan Nur Syuhaila Mat Desa
- Program Sains Forensik, Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Dzulkiflee Ismail
- Program Sains Forensik, Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia, Kubang Kerian, Malaysia
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9
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Mohamad Asri MN, Mat Desa WNS, Ismail D. Raman spectroscopy of ballpoint-pen inks using chemometric techniques. AUST J FORENSIC SCI 2016. [DOI: 10.1080/00450618.2016.1153712] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Muhammad Naeim Mohamad Asri
- Program Sains Forensik, Pusat Pengajian Sains Kesihatan,Universiti Sains Malaysia, Kampus Kesihatan, Kubang Kerian, Malaysia
| | - Wan Nur Syuhaila Mat Desa
- Program Sains Forensik, Pusat Pengajian Sains Kesihatan,Universiti Sains Malaysia, Kampus Kesihatan, Kubang Kerian, Malaysia
| | - Dzulkiflee Ismail
- Program Sains Forensik, Pusat Pengajian Sains Kesihatan,Universiti Sains Malaysia, Kampus Kesihatan, Kubang Kerian, Malaysia
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10
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Ho YC, Lee WWY, Bell SEJ. Investigation of the chemical origin and evidential value of differences in the SERS spectra of blue gel inks. Analyst 2016; 141:5152-8. [DOI: 10.1039/c6an00972g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly swellable polymer films doped with Ag nanoparticle aggregates (poly-SERS films) have been used to record very high signal : noise ratio, reproducible surface-enhanced resonance Raman (SERRS) spectra of in situ dried ink lines and their constituent dyes using both 633 and 785 nm excitation.
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Affiliation(s)
- Yen Cheng Ho
- Forensic Science Centre
- New Taipei City Police Department
- New Taipei City
- Republic of China
| | - Wendy W. Y. Lee
- Innovative Molecular Materials Group
- School of Chemistry and Chemical Engineering
- David Keir Building
- Stranmillis Road
- Queen's University
| | - Steven E. J. Bell
- Innovative Molecular Materials Group
- School of Chemistry and Chemical Engineering
- David Keir Building
- Stranmillis Road
- Queen's University
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11
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Muehlethaler C, Leona M, Lombardi JR. Review of Surface Enhanced Raman Scattering Applications in Forensic Science. Anal Chem 2015; 88:152-69. [DOI: 10.1021/acs.analchem.5b04131] [Citation(s) in RCA: 212] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Cyril Muehlethaler
- The Metropolitan Museum of Art, Department of
Scientific Research, New York, New York 10028, United States
- Department
of Chemistry, City College of New York and Graduate Center of the City University of New York, New York, New York 10031, United States
| | - Marco Leona
- The Metropolitan Museum of Art, Department of
Scientific Research, New York, New York 10028, United States
| | - John R. Lombardi
- Department
of Chemistry, City College of New York and Graduate Center of the City University of New York, New York, New York 10031, United States
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12
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de Souza Lins Borba F, Saldanha Honorato R, de Juan A. Use of Raman spectroscopy and chemometrics to distinguish blue ballpoint pen inks. Forensic Sci Int 2015; 249:73-82. [DOI: 10.1016/j.forsciint.2015.01.027] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 01/22/2015] [Accepted: 01/23/2015] [Indexed: 11/27/2022]
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13
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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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14
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Braz A, López-López M, Montalvo G, Ruiz CG. Forensic discrimination of inkjet-printed lines by Raman spectroscopy and surface-enhanced Raman spectroscopy. AUST J FORENSIC SCI 2014. [DOI: 10.1080/00450618.2014.982179] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Silver nanoparticles doped agarose disk: Highly sensitive surface-enhanced Raman scattering substrate for in situ analysis of ink dyes. Forensic Sci Int 2013; 233:21-7. [DOI: 10.1016/j.forsciint.2013.08.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 07/28/2013] [Accepted: 08/05/2013] [Indexed: 11/22/2022]
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16
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Braz A, López-López M, García-Ruiz C. Raman spectroscopy for forensic analysis of inks in questioned documents. Forensic Sci Int 2013; 232:206-12. [DOI: 10.1016/j.forsciint.2013.07.017] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 07/22/2013] [Accepted: 07/24/2013] [Indexed: 12/01/2022]
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17
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Jones RW, McClelland JF. Analysis of writing inks on paper using direct analysis in real time mass spectrometry. Forensic Sci Int 2013; 231:73-81. [DOI: 10.1016/j.forsciint.2013.04.016] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 03/29/2013] [Accepted: 04/17/2013] [Indexed: 10/26/2022]
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18
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Heudt L, Debois D, Zimmerman TA, Köhler L, Bano F, Partouche F, Duwez AS, Gilbert B, De Pauw E. Raman spectroscopy and laser desorption mass spectrometry for minimal destructive forensic analysis of black and color inkjet printed documents. Forensic Sci Int 2012; 219:64-75. [DOI: 10.1016/j.forsciint.2011.12.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Revised: 11/18/2011] [Accepted: 12/12/2011] [Indexed: 10/14/2022]
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19
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Romão W, Vaz BG, Lalli PM, Bueno MIMS, Correa DN, Telles VLCN, de Castro EVR, Eberlin MN. Analyzing Brazilian Vehicle Documents for Authenticity by Easy Ambient Sonic-Spray Ionization Mass Spectrometry*. J Forensic Sci 2011; 57:539-43. [DOI: 10.1111/j.1556-4029.2011.02005.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Choi MJ, Kim CS, Sun YS, Park SW. Composition of volatile organic components on ballpoint pen inks by HS-SPME GC/MS. ANALYTICAL SCIENCE AND TECHNOLOGY 2010. [DOI: 10.5806/ast.2010.23.4.414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Geiman I, Leona M, Lombardi JR. Application of Raman Spectroscopy and Surface-Enhanced Raman Scattering to the Analysis of Synthetic Dyes Found in Ballpoint Pen Inks. J Forensic Sci 2009; 54:947-52. [DOI: 10.1111/j.1556-4029.2009.01058.x] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Achievements in resonance Raman spectroscopy. Anal Chim Acta 2008; 606:119-34. [DOI: 10.1016/j.aca.2007.11.006] [Citation(s) in RCA: 209] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2007] [Revised: 10/31/2007] [Accepted: 11/02/2007] [Indexed: 11/21/2022]
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23
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Ifa DR, Gumaelius LM, Eberlin LS, Manicke NE, Cooks RG. Forensic analysis of inks by imaging desorption electrospray ionization (DESI) mass spectrometry. Analyst 2007; 132:461-7. [PMID: 17471393 DOI: 10.1039/b700236j] [Citation(s) in RCA: 140] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Desorption electrospray ionization mass spectrometry (DESI-MS) is employed in the forensic analysis of documents. Blue ballpoint pen inks applied to ordinary writing paper are examined under ambient conditions without any prior sample preparation. When coupled to an automated moving stage, two-dimensional molecular images are generated. Proof-of-principle experiments include characterization of a simulated forged number and examination of older written records. This application of DESI has advantages over extractive techniques in terms of speed and sample preservation. The effects of the desorbing solvent composition, in this case a mixture of methanol and water, and of flow rate, are evaluated. Results suggest that the solubility of the analyte (dyes Basic Blue 7, Basic Violet 3 and Solvent Blue 26) plays an important role in desorption from the paper surface.
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Affiliation(s)
- D R Ifa
- Purdue University, Department of Chemistry, West Lafayette, IN 47907, USA
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24
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Arráez Román D, Efremov E, Ariese F, Segura Carretero A, Gooijer C. Interfacing capillary electrophoresis and surface-enhanced resonance Raman spectroscopy for the determination of dye compounds. Anal Bioanal Chem 2005; 382:180-5. [PMID: 15900469 DOI: 10.1007/s00216-005-3164-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2004] [Revised: 02/01/2005] [Accepted: 02/07/2005] [Indexed: 11/27/2022]
Abstract
The at-line coupling of capillary electrophoresis (CE) and surface-enhanced resonance Raman spectroscopy (SERRS) was optimized for the separation and subsequent spectroscopic identification of charged analytes (dye compounds). Raman spectra were recorded following deposition of the electropherogram onto a moving substrate. To this end a new interface was developed using a stainless steel needle as a (grounded) cathode. The outlet end of the CE capillary was inserted into this metal needle; CE buffer touching the needle tip served as the electrical connection for the CE separation. A translation table was used to move the TLC plate at a constant speed during the deposition. The distance between the tip of the fused silica column and the TLC plate was kept as small as possible in order to establish a constant bridge-flow, while avoiding direct contact. The dyes Basic Red 9 (BR9), Acid Orange 7 (AO7) and Food Yellow 3 (FY3) were used as test compounds. After CE separation in a 20 mM borate buffer at pH 10, after deposition, concentrated silver colloid was added to each analyte spot, followed by irradiation with 514.5 nm light from an argon ion laser to record the SERRS signal using a Raman microscope. Different types of silver colloids were tested: Lee-Meisel type (citrate), borate, and gold-coated silver. BR9 (positively charged) gave much more intense SERRS spectra than the two negatively charged dyes. For BR9 and AO7 the citrate-coated Lee-Meisel colloid yielded the most intense SERRS spectra. The CE-SERRS system was used to separate and detect the negatively charged dyes. Silver colloid and nitric acid (to improve adsorption) were added post-deposition. Even though their chemical structures are very similar, AO7 and FY3 could be readily distinguished based on their SERRS spectra. The limits of detection (S/N = 3) of the CE-SERRS system ranged from 6.7 x 10(-5) M (2.6 x 10(-12) mol injected) for FY3 down to 1.8 x 10(-6) M (7.0 x 10(-14) mol injected) for BR9.
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Affiliation(s)
- D Arráez Román
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, C/Fuentenueva s/n, 18071, Granada, Spain
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White PC. In situ Surface Enhanced Resonance Raman Scattering (SERRS) spectroscopy of biro inks – long term stability of colloid treated samples. Sci Justice 2003; 43:149-52. [PMID: 14509375 DOI: 10.1016/s1355-0306(03)71762-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The script produced by two black biro inks in 1998 in a document that was not subjected to any special storage conditions or further treatment was re-analysed by SERRS spectroscopy. The results presented show that the analyses of the areas of the ink strokes previously treated with an aggregating agent. poly-(L-lysine), and then silver colloid still produce strong SERRS spectra. No major changes are observed in the spectra thus still providing a method for discriminating between the two inks used in the document and illustrating the long-term stability of the colloid treatment. This ability to re-analyse the ink samples without any further treatment is attributed to the use of very fine pen nibs to apply the reagents.
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Affiliation(s)
- P C White
- The University of Strathclyde, Forensic Science Unit, Royal College, 204 George Street, Glasgow G1 1XN, United Kingdom
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