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LC/MS/MS of carbohydrates with postcolumn addition of metal chlorides using triaxial electrospray probe
Abstract
A new technique for on-line postcolumn addition (PCA) formation and tandem electrospray mass spectrometry of carbohydrate-metal complexes is presented. A metal chloride solution is added to a carbohydrate sample directly within the ion source of the mass spectrometer. Using a triaxial electrospray probe, this technique can be applied to form carbohydrate-metal complexes on-line, without the need of previously mixing the carbohydrate and metal chloride. Two basic tasks may be accomplished: structural analysis and sensitivity enhancement. The performance of this approach is demonstrated through PCA of LiCl, NaCl, KCl, RbCl, CsCl, and CoCl2, introduced via the triaxial probe after chromatographic separation of two four-component carbohydrate mixtures. Each metal-carbohydrate complex is subsequently analyzed by on-line MS and MS/MS. This technique is used to enhance sensitivity and also, in the case of cobalt coordination, to assist in carbohydrate structural elucidation. On-line LC/MS with PCA of LiCl was achieved with as little as 1.7 pmol of oligosaccharide (average consumed amount, 1.7 pmol with 1 microL of a 10 pmol/microL carbohydrate test mixture injection).
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“Online Post-column complex formation by addition of metal binding partner has been used, to study carbohydrates67 and siderophores68, respectively, which we here expand to protein targets as binding partners.”
From Native metabolomics identifies the rivulariapeptolide family of protease inhibitors (2022) · cites this paper as [67]
Citations
Cites
Improved electrospray ionization interface for capillary zone electrophoresis-mass spectrometry
Smith, R. D., Barinaga, C. J., & Udseth, H. R. (1988) · Analytical Chemistry · doi:10.1021/ac00169a022 · Cited by 534
Hofmeister, G. E., Zhou, Z., & Leary, J. A. (1991) · Journal of the American Chemical Society · doi:10.1021/ja00016a007 · Cited by 373
Self-citationCarr, S. A., Huddleston, M. J., & Bean, M. F. (1993) · Protein Science · doi:10.1002/pro.5560020207 · Cited by 285
Huddleston, M. J., Annan, R. S., Bean, M. F., & Carr, S. A. (1993) · Journal of the American Society for Mass Spectrometry · doi:10.1016/1044-0305(93)80049-5 · Cited by 242
Zhou, Z., Ogden, S., & Leary, J. A. (1990) · The Journal of Organic Chemistry · doi:10.1021/jo00307a011 · Cited by 189
Self-citationFura, A., & Leary, J. A. (1993) · Analytical Chemistry · doi:10.1021/ac00068a017 · Cited by 116
Self-citationCharacterization of N-linked oligosaccharides by electrospray and tandem mass spectrometry
Duffin, K. L., Welply, J. K., Huang, E. C., & Henion, J. D. (1992) · Analytical Chemistry · doi:10.1021/ac00037a024 · Cited by 104
Simpson, R. C., Fenselau, C. C., Hardy, M. R., Townsend, R. R., Lee, Y. C., & Cotter, R. J. (1990) · Analytical Chemistry · doi:10.1021/ac00202a005 · Cited by 95
Structural analysis of proteins by capillary HPLC electrospray tandem mass spectrometry
Griffin, P. R., Coffman, J. A., Hood, L., & Yates, J. R. (1991) · International Journal of Mass Spectrometry and Ion Processes · doi:10.1016/0168-1176(91)85052-n · Cited by 88
Lewis, D. A., Guzzetta, A. W., Hancock, W. S., & Costello, M. (1994) · Analytical Chemistry · doi:10.1021/ac00077a003 · Cited by 84
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GAO, S., Zhang, Z., & Karnes, H. T. (2005) · Journal of Chromatography B · doi:10.1016/j.jchromb.2005.04.021 · Cited by 230
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Park, Y., & Lebrilla, C. B. (2004) · Mass Spectrometry Reviews · doi:10.1002/mas.20010 · Cited by 149
Determination of steroids by liquid chromatography/mass spectrometry
Ma, Y., & Kim, H. (1997) · Journal of the American Society for Mass Spectrometry · doi:10.1016/s1044-0305(97)00122-0 · Cited by 147
Adamson, J. T., & Håkansson, K. (2007) · Analytical Chemistry · doi:10.1021/ac0621423 · Cited by 132
Analysis of the chemical composition of natural carbohydrates – An overview of methods
Kurzyna-Szklarek, M., Cybulska, J., & Zdunek, A. (2022) · Food Chemistry · doi:10.1016/j.foodchem.2022.133466 · Cited by 118
Sandra, P., Medvedovici, A. V., Zhao, Y. G., & David, F. (2002) · Journal of Chromatography A · doi:10.1016/s0021-9673(02)01311-0 · Cited by 108
König, S., & Leary, J. A. (1998) · Journal of the American Society for Mass Spectrometry · doi:10.1016/s1044-0305(98)00096-8 · Cited by 106
Self-citationGaucher, S. P., & Leary, J. A. (1998) · Analytical Chemistry · doi:10.1021/ac980023k · Cited by 104
Self-citationCareri, M., Mangia, A., & Musci, M. (1998) · Journal of Chromatography A · doi:10.1016/s0021-9673(97)00654-7 · Cited by 92
Sible, E. M., Brimmer, S. P., & Leary, J. A. (1997) · Journal of the American Society for Mass Spectrometry · doi:10.1016/s1044-0305(97)82229-5 · Cited by 79
Self-citationDetermination of Dissolved Metal Species by Electrospray Ionization Mass Spectrometry
Ross, A. R. S., Ikonomou, M. G., Thompson, J. A. J., & Orians, K. J. (1998) · Analytical Chemistry · doi:10.1021/ac9711908 · Cited by 76
Chen, J., Green, K. B., & Nichols, K. K. (2013) · Investigative Ophthalmology & Visual Science · doi:10.1167/iovs.12-10317 · Cited by 75
Harvey, D. J. (2001) · Journal of the American Society for Mass Spectrometry · doi:10.1016/s1044-0305(01)00268-9 · Cited by 72
Kohler, M., & Leary, J. A. (1997) · International Journal of Mass Spectrometry and Ion Processes · doi:10.1016/s0168-1176(96)04474-6 · Cited by 70
Self-citationSensitive LC MS quantitative analysis of carbohydrates by Cs+ attachment
Rogatsky, E., Jayatillake, H., Goswami, G., Tomuta, V., & Stein, D. T. (2005) · Journal of the American Society for Mass Spectrometry · doi:10.1016/j.jasms.2005.07.017 · Cited by 66
Kohler, M., & Leary, J. A. (1997) · Journal of the American Society for Mass Spectrometry · doi:10.1016/s1044-0305(97)00155-4 · Cited by 66
Self-citationShou, W. Z., Jiang, X., & Weng, N. (2004) · Biomedical Chromatography · doi:10.1002/bmc.329 · Cited by 64
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Dooley, K. (2003) · Clinical Biochemistry · doi:10.1016/s0009-9120(03)00105-x · Cited by 64
Metal–Carbohydrate Complexes in Solution
Verchère, J., Chapelle, S., Xin, F., & Crans, D. C. (1997) · Progress in inorganic chemistry · doi:10.1002/9780470166482.ch8 · Cited by 62
Huber, C. G., & Krajete, A. (2000) · Journal of Chromatography A · doi:10.1016/s0021-9673(99)00953-x · Cited by 61
Verardo, G., Duse, I., & Callea, A. (2009) · Rapid Communications in Mass Spectrometry · doi:10.1002/rcm.4047 · Cited by 59
Ross, A. R. S., Ikonomou, M. G., & Orians, K. J. (2000) · Analytica Chimica Acta · doi:10.1016/s0003-2670(00)00746-7 · Cited by 54
Hammad, L. A., Saleh, M. M., Novotný, M. V., & Mechref, Y. S. (2009) · Journal of the American Society for Mass Spectrometry · doi:10.1016/j.jasms.2009.02.022 · Cited by 53
Wunschel, D. S., Fox, K. F., Fox, A., Nagpal, M. L., Kim, K., Stewart, G. C., & Shahgholi, M. (1997) · Journal of Chromatography A · doi:10.1016/s0021-9673(97)00356-7 · Cited by 52
Identification of saccharides by using direct analysis in real time (DART) mass spectrometry
Wang, Y., Liu, L., Ma, L., & Liu, S. (2013) · International Journal of Mass Spectrometry · doi:10.1016/j.ijms.2013.09.008 · Cited by 51
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Reher, R., Aron, A. T., Fajtová, P., Stincone, P., Wagner, B., Pérez-Lorente, A. I., Liu, C., Shalom, I. Y. B., Bittremieux, W., Wang, M., et al. (2022) · Nature Communications · doi:10.1038/s41467-022-32016-6 · Cited by 53
Shepherd, R. (2003) · Coordination Chemistry Reviews · doi:10.1016/s0010-8545(03)00125-5 · Cited by 46
Ricochon, G., Paris, C., Girardin, M., & Muniglia, L. (2011) · Journal of Chromatography B · doi:10.1016/j.jchromb.2011.03.044 · Cited by 43
Gaucher, S. P., & Leary, J. A. (2000) · International Journal of Mass Spectrometry · doi:10.1016/s1387-3806(99)00238-9 · Cited by 42
Self-citationAckloo, S. Z., Smith, R. W. P., Terlouw, J. K., & McCarry, B. E. (2000) · The Analyst · doi:10.1039/a908419c · Cited by 40
Marwah, A. K., Marwah, P., & Lardy, H. A. (2002) · Journal of Chromatography A · doi:10.1016/s0021-9673(02)00650-7 · Cited by 38
Carlesso, V., Fournier, F., & Tabet, J. C. (2000) · European Journal of Mass Spectrometry · doi:10.1255/ejms.365 · Cited by 36
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Gass, D. T., Quintero, A. V., Hatvany, J. B., & Gallagher, E. S. (2022) · Mass Spectrometry Reviews · doi:10.1002/mas.21801 · Cited by 35
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LaCourse, W. R., & Dasenbrock, C. O. (1998) · Analytical Chemistry · doi:10.1021/a1980007c · Cited by 34
Enzymatic Degradation of Methacrylated Dextrans
Franssen, O., van Ooijen, R. D., de Boer, D., Maes, R. A. A., Herron, J., & Hennink, W. E. (1997) · Macromolecules · doi:10.1021/ma970887s · Cited by 33
Clark, S. M., & Konermann, L. (2004) · Analytical Chemistry · doi:10.1021/ac035230l · Cited by 33
A density functional theory investigation of metal ion binding sites in monosaccharides
Zheng, Y., Ornstein, R. L., & Leary, J. A. (1997) · Journal of Molecular Structure THEOCHEM · doi:10.1016/s0166-1280(96)04707-0 · Cited by 31
Self-citationWilliams, D., & Young, M. K. (2000) · Rapid Communications in Mass Spectrometry · doi:10.1002/1097-0231(20001130)14:22 · Cited by 31
Duke, R. M., Bogala, M. R., & Cassady, C. J. (2018) · Journal of the American Society for Mass Spectrometry · doi:10.1007/s13361-018-1906-1 · Cited by 31
Kanojiya, S., & Madhusudanan, K. P. (2011) · Phytochemical Analysis · doi:10.1002/pca.1332 · Cited by 30
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Shou, W. Z., & Browner, R. F. (1999) · Analytical Chemistry · doi:10.1021/ac9902143 · Cited by 26
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Jiang, P., & Lucy, C. A. (2016) · Analytical Methods · doi:10.1039/c6ay01419d · Cited by 24
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Rogatsky, E., Tomuta, V., & Stein, D. T. (2007) · Analytica Chimica Acta · doi:10.1016/j.aca.2007.04.001 · Cited by 24
Moldoveanu, S. C., Scott, W. A., & Zhu, J. X. (2015) · Journal of Separation Science · doi:10.1002/jssc.201500573 · Cited by 23
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Xiong, Z., Sun, X., Huo, T., Li, N., Zheng, Y. Q., & Sun, Y. (2009) · Biomedical Chromatography · doi:10.1002/bmc.1265 · Cited by 20
Pitsch, J., & Weghuber, J. (2019) · Molecules · doi:10.3390/molecules24234333 · Cited by 20
Španěl, P., Smith, D. C., Holland, T. A., Al-Singary, W., & Elder, J. B. (1999) · Rapid Communications in Mass Spectrometry · doi:10.1002/(sici)1097-0231(19990730)13:14 · Cited by 189
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Charles, L., Laure, F., Raharivelomanana, P., & Bianchini, J. (2004) · Journal of Mass Spectrometry · doi:10.1002/jms.777 · Cited by 18
Blacken, G. R., Sadı́lek, M., & Tureček, F. (2008) · Journal of Mass Spectrometry · doi:10.1002/jms.1387 · Cited by 17
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de la Mora, J. F., Berkel, G. J. V., Enke, C. G., Cole, R. B., Martı́nez-Sánchez, M., & Fenn, J. B. (2000) · Journal of Mass Spectrometry · doi:10.1002/1096-9888(200008)35:8 · Cited by 326
Muhammad, N., Hussain, I., Fu, X., Ali, A., Guo, D., Noureen, L., Subhani, Q., Ahmad, N., Zhu, Q., Cui, H., et al. (2025) · Mass Spectrometry Reviews · doi:10.1002/mas.21930 · Cited by 15
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Williams, D., Lee, T. D., Dinh, N., & Young, M. K. (2000) · Rapid Communications in Mass Spectrometry · doi:10.1002/1097-0231(20000830)14:16 · Cited by 13
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Okatch, H., & Torto, N. (2003) · AFRICAN JOURNAL OF BIOTECHNOLOGY · doi:10.5897/ajb2003.000-1118 · Cited by 11
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Huck, C. W., Huber, C. G., & Bonn, G. K. (2002) · Journal of chromatography library · doi:10.1016/s0301-4770(02)80030-6 · Cited by 11
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Huber, C. G., & Hölzl, G. (2001) · Journal of chromatography library · doi:10.1016/s0301-4770(01)80080-4 · Cited by 9
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Giese, B., Wessely, S., Spormann, M., Lindemann, U., Meggers, E., & Michel‐Beyerle, M. E. (1999) · Angewandte Chemie · doi:10.1002/(sici)1521-3757(19990401)111:7 · Cited by 24
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Stahl, M., von Brocke, A., & Bayer, E. (2002) · Journal of chromatography library · doi:10.1016/s0301-4770(02)80052-5 · Cited by 6
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Eichhorn, P., Pérez, S., Bechtholt, A., & Aga, D. S. (2004) · Journal of Mass Spectrometry · doi:10.1002/jms.760 · Cited by 5
Thacker, J. B., & Schug, K. A. (2018) · Journal of the American Society for Mass Spectrometry · doi:10.1007/s13361-018-2112-x · Cited by 4
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Zarkovic, T. M., Borden, S. A., Krogh, E. T., & Gill, C. G. (2023) · Rapid Communications in Mass Spectrometry · doi:10.1002/rcm.9487 · Cited by 4
Moldoveanu, S. C. (2023) · Separation Science Plus · doi:10.1002/sscp.202300068 · Cited by 4
Izquierdo, R. A., Madureira, J., Ramos, C. I. V., Santana‐Marques, M. G., & Santos, T. M. (2010) · International Journal of Mass Spectrometry · doi:10.1016/j.ijms.2010.08.007 · Cited by 4
Wang, Q., Liu, J., Huang, B., Yang, L., Guo, X., & Wang, X. (2000) · Analytical Sciences · doi:10.2116/analsci.16.241 · Cited by 4
Fritsche, J., & Herderich, M. J. (2001) · Nachrichten aus der Chemie · doi:10.1002/nadc.20010490313 · Cited by 3
Mustapha, A. M., & Pasilis, S. P. (2015) · Journal of Mass Spectrometry · doi:10.1002/jms.3507 · Cited by 2
Mechref, Y. S. (2010) · Humana Press eBooks · doi:10.1007/978-1-60761-875-1_10 · Cited by 2
Russo, A., Migliorini, M., Cecchi, L., Cherubini, C., Giusti, M., Zanoni, B., Perri, E., Nardi, M., & Sindona, G. (2012) · Journal of Mass Spectrometry · doi:10.1002/jms.3091 · Cited by 2
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Moineau, C., Sinou, D., Becchi, M., & Bobenrieth, M. J. (2001) · European Journal of Mass Spectrometry · doi:10.1255/ejms.435 · Cited by 2
Carbohydrate Markers of Organism Purity and Growth Environment
Wunschel, D. S., & Fox, A. (2011) · Springer eBooks · doi:10.1007/978-1-60327-219-3_4 · Cited by 1
Novel Tandem Mass Spectrometry (MS/MS) Approaches for Structural Characterization of Glycans.
Gao, D. (2013) · Deep Blue (University of Michigan) · Cited by 1
VanSchoiack, A. D. (2015) · UA Campus Repository (The University of Arizona)
Matuszak, M., Ostrowski, W., & Frański, R. (2011)
Metadata
- Authors
- Kohler, M., & Leary, J. A.
- Affiliations
- University of California, Berkeley (US)
- Venue
- Analytical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 1995-10-01
- Volume
- 67
- Issue
- 19
- Pages
- 3501-3508
- ISSN
- 0003-2700 (ISSN-L)
- 1520-6882
- OpenAlex
- W2091422516
- Cited by
- 96
- References
- 21
- Citations by year
- 2025: 2 · 2023: 3 · 2022: 3 · 2019: 2 · 2018: 5 · 2016: 1 · 2015: 4 · 2014: 1 · 2013: 3 · 2012: 2
- FWCI
- 3.62
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Analytical Chemistry (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institute of General Medical Sciences (GM-47356, R01GM047356)
- Topics
- Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolomics and Mass Spectrometry Studies
- Physical Sciences › Chemistry › Analytical Chemistry › Analytical Chemistry and Chromatography
- Keywords
- LC-MS/MS, metal chlorides, cobalt complexation, sensitivity enhancement
- MeSH terms
- Carbohydrates, Chlorides, Chromatography, Liquid, Metals, Mass Spectrometry
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