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Irifune R, Ishikawa T, Kitagawa S, Iiguni Y, Ohtani H. Analysis of polyisoprene oligomers via in situ silver nanoparticle formation on thin-layer chromatography plate using matrix-assisted laser-induced desorption/ionization mass spectrometry. ANAL SCI 2023; 39:1823-1827. [PMID: 37668881 DOI: 10.1007/s44211-023-00420-7] [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: 06/09/2023] [Accepted: 08/21/2023] [Indexed: 09/06/2023]
Abstract
The direct mass spectrometry (MS) detection of polyisoprene (PI) oligomers on a thin-layer chromatography (TLC) plate using matrix-assisted laser-induced desorption/ionization (MALDI) with silver trifluoroacetate as the cationization reagent was investigated. The spots of PI oligomers and silver trifluoroacetate on the TLC plate resulted in brown materials after UV laser irradiation. It was suggested that silver trifluoroacetate yielded Ag nanoparticles as brown materials after heating via laser irradiation. The nanoparticles behaved as an inorganic matrix and a source of Ag+ adduct in the analysis of PI oligomers. The use of organic matrices together with silver trifluoroacetate reduced the signal intensity of PI oligomers on MALDI-MS on a TLC plate. The separation of PI oligomers (polymerization degree, n = 5-11) by TLC resulted in a single elliptical spot without a clear separation after the chromatographic procedure. However, in MS imaging, differences in migration lengths based on degrees of polymerization were clearly observed and the degrees of polymerization were identified without comparison with standards.
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Affiliation(s)
- Ryota Irifune
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, 466-8555, Japan
| | - Takanao Ishikawa
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, 466-8555, Japan
| | - Shinya Kitagawa
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, 466-8555, Japan.
| | - Yoshinori Iiguni
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, 466-8555, Japan
| | - Hajime Ohtani
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, 466-8555, Japan
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HOBO W, JO A, KOYAGI S, OGAWA S, NISHIMOTO-KUSUNOSE S, HIGASHI T. An LC/ESI-MS/MS Method for Quantification of Hexanoylglycine in Three Different Urine Samples Within a Single Run Using Triplex 1-[(4- Diethylaminophenyl)carbonyl]piperazine Isotopologues. CHROMATOGRAPHY 2022. [DOI: 10.15583/jpchrom.2022.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wataru HOBO
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Akihiro JO
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Sae KOYAGI
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Shoujiro OGAWA
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | | | - Tatsuya HIGASHI
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
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