Thomas Jefferson University

Murray V Johnston

TitleAssoc Prof CHP
InstitutionThomas Jefferson University
DepartmentNursing - Undergraduate
Address163 The Green
Newark DE 19716
Phone302-831-8014
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    Collapse Research 
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    S10RR016786     (JOHNSTON, MURRAY V)Jun 1, 2002 - May 31, 2003
    NIH
    Liquid Chormatograph Mass Spectrometer (LC-MS)
    Role: Principal Investigator
    S10OD016267     (JOHNSTON, MURRAY V)Sep 1, 2013 - Nov 30, 2014
    NIH
    Q-Exactive Orbitrap LC-MC/MS System
    Role: Principal Investigator

    Collapse Bibliographic 
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Jiang S, Apsokardu MJ, Liu YR, Wang CY, Huang T, Johnston MV. Ion formation mechanism of cortisone molecules and clusters in charged nanodroplets. Phys Chem Chem Phys. 2022 Nov 23; 24(45):28047-28054. PMID: 36377512.
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    2. Kerecman DE, Apsokardu MJ, Talledo SL, Taylor MS, Haugh DN, Zhang Y, Johnston MV. Online Characterization of Organic Aerosol by Condensational Growth into Aqueous Droplets Coupled with Droplet-Assisted Ionization. Anal Chem. 2021 02 09; 93(5):2793-2801. PMID: 33513002.
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    3. Apsokardu MJ, Krasnomowitz JM, Jiang S, Johnston MV. Ion Formation from Rapidly Heated Aqueous Droplets by Droplet-Assisted Ionization. J Phys Chem A. 2020 Sep 01. PMID: 32833452.
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    4. Zhang Y, Apsokardu MJ, Kerecman DE, Achtenhagen M, Johnston MV. Reaction Kinetics of Organic Aerosol Studied by Droplet Assisted Ionization: Enhanced Reactivity in Droplets Relative to Bulk Solution. J Am Soc Mass Spectrom. 2020 Jun 15. PMID: 32469218.
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    5. Johnston MV, Kerecman D. Molecular Characterization of Atmospheric Organic Aerosol by Mass Spectrometry. Annu Rev Anal Chem (Palo Alto Calif). 2019 Mar 22. PMID: 30901261.
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    6. Apsokardu MJ, Kerecman DE, Johnston MV. Ion formation in droplet-assisted ionization. Rapid Commun Mass Spectrom. 2018 Jul 03. PMID: 29971846.
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    7. Choi S, Johnston M, Wang GS, Huang CP. A seasonal observation on the distribution of engineered nanoparticles in municipal wastewater treatment systems exemplified by TiO2 and ZnO. Sci Total Environ. 2018 Jun 01; 625:1321-1329. PMID: 29996429.
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    8. Bzdek BR, DePalma JW, Johnston MV. Mechanisms of Atmospherically Relevant Cluster Growth. Acc Chem Res. 2017 Aug 15; 50(8):1965-1975. PMID: 28700203.
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    9. Stangl CM, Johnston MV. Aqueous Reaction of Dicarbonyls with Ammonia as a Potential Source of Organic Nitrogen in Airborne Nanoparticles. J Phys Chem A. 2017 May 18; 121(19):3720-3727. PMID: 28440646.
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    10. Wu Y, Johnston MV. Aerosol Formation from OH Oxidation of the Volatile Cyclic Methyl Siloxane (cVMS) Decamethylcyclopentasiloxane. Environ Sci Technol. 2017 Apr 18; 51(8):4445-4451. PMID: 28333451.
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    11. Choi S, Johnston MV, Wang GS, Huang CP. Looking for engineered nanoparticles (ENPs) in wastewater treatment systems: Qualification and quantification aspects. Sci Total Environ. 2017 Jul 15; 590-591:809-817. PMID: 28292607.
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    12. Horan AJ, Apsokardu MJ, Johnston MV. Droplet Assisted Inlet Ionization for Online Analysis of Airborne Nanoparticles. Anal Chem. 2017 Jan 17; 89(2):1059-1062. PMID: 28194981.
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    13. Thomas JM, He S, Larriba-Andaluz C, DePalma JW, Johnston MV, Hogan CJ. Ion mobility spectrometry-mass spectrometry examination of the structures, stabilities, and extents of hydration of dimethylamine-sulfuric acid clusters. Phys Chem Chem Phys. 2016 Aug 17; 18(33):22962-72. PMID: 27485283.
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    14. Hoang K, Pophristic M, Horan AJ, Johnston MV, McEwen CN. High Sensitivity Analysis of Nanoliter Volumes of Volatile and Nonvolatile Compounds using Matrix Assisted Ionization (MAI) Mass Spectrometry. J Am Soc Mass Spectrom. 2016 Oct; 27(10):1590-6. PMID: 27349254.
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    15. Tu P, Hall WA, Johnston MV. Characterization of Highly Oxidized Molecules in Fresh and Aged Biogenic Secondary Organic Aerosol. Anal Chem. 2016 Apr 19; 88(8):4495-501. PMID: 27000653.
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    16. Wu Y, Johnston MV. Molecular Characterization of Secondary Aerosol from Oxidation of Cyclic Methylsiloxanes. J Am Soc Mass Spectrom. 2016 Mar; 27(3):402-9. PMID: 26729452.
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    17. DePalma JW, Wang J, Wexler AS, Johnston MV. Growth of Ammonium Bisulfate Clusters by Adsorption of Oxygenated Organic Molecules. J Phys Chem A. 2015 Nov 12; 119(45):11191-8. PMID: 26488562.
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    18. DePalma JW, Bzdek BR, Ridge DP, Johnston MV. Correction to "activation barriers in the growth of molecular clusters derived from sulfuric Acid and ammonia". J Phys Chem A. 2015 Feb 5; 119(5):931-2. PMID: 25611988.
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    19. DePalma JW, Bzdek BR, Ridge DP, Johnston MV. Activation barriers in the growth of molecular clusters derived from sulfuric Acid and ammonia. J Phys Chem A. 2014 Dec 11; 118(49):11547-54. PMID: 25394285.
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    20. Bzdek BR, Horan AJ, Pennington MR, Janechek NJ, Baek J, Stanier CO, Johnston MV. Silicon is a Frequent Component of Atmospheric Nanoparticles. Environ Sci Technol. 2014 Oct 7; 48(19):11137-45. PMID: 25203137.
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    21. DePalma JW, Doren DJ, Johnston MV. Formation and growth of molecular clusters containing sulfuric Acid, water, ammonia, and dimethylamine. J Phys Chem A. 2014 Jul 24; 118(29):5464-73. PMID: 24963535.
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    22. Depalma JW, Horan AJ, Hall Iv WA, Johnston MV. Thermodynamics of oligomer formation: implications for secondary organic aerosol formation and reactivity. Phys Chem Chem Phys. 2013 May 14; 15(18):6935-44. PMID: 23549300.
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    23. Kulmala M, Kontkanen J, Junninen H, Lehtipalo K, Manninen HE, Nieminen T, Petäjä T, Sipilä M, Schobesberger S, Rantala P, Franchin A, Jokinen T, Järvinen E, Äijälä M, Kangasluoma J, Hakala J, Aalto PP, Paasonen P, Mikkilä J, Vanhanen J, Aalto J, Hakola H, Makkonen U, Ruuskanen T, Mauldin RL, Duplissy J, Vehkamäki H, Bäck J, Kortelainen A, Riipinen I, Kurtén T, Johnston MV, Smith JN, Ehn M, Mentel TF, Lehtinen KE, Laaksonen A, Kerminen VM, Worsnop DR. Direct observations of atmospheric aerosol nucleation. Science. 2013 Feb 22; 339(6122):943-6. PMID: 23430652.
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    24. Hall WA, Pennington MR, Johnston MV. Molecular transformations accompanying the aging of laboratory secondary organic aerosol. Environ Sci Technol. 2013 Mar 5; 47(5):2230-7. PMID: 23390983.
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    25. Klems JP, Johnston MV. Origin and impact of particle-to-particle variations in composition measurements with the nano-aerosol mass spectrometer. Anal Bioanal Chem. 2013 Sep; 405(22):6995-7003. PMID: 23407811.
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    26. Bzdek BR, Depalma JW, Ridge DP, Laskin J, Johnston MV. Fragmentation energetics of clusters relevant to atmospheric new particle formation. J Am Chem Soc. 2013 Feb 27; 135(8):3276-85. PMID: 23373990.
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    27. Johnston MV, Klems JP, Zordan CA, Pennington MR, Smith JN. Selective detection and characterization of nanoparticles from motor vehicles. Res Rep Health Eff Inst. 2013 Feb; (173):3-45. PMID: 23614271.
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    28. Bzdek BR, Horan AJ, Pennington MR, DePalma JW, Zhao J, Jen CN, Hanson DR, Smith JN, de McMurry PH, Johnston MV. Quantitative and time-resolved nanoparticle composition measurements during new particle formation. Faraday Discuss. 2013; 165:25-43. PMID: 24600995.
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    29. Horan AJ, Gao Y, Hall WA, Johnston MV. Online characterization of particles and gases with an ambient electrospray ionization source. Anal Chem. 2012 Nov 6; 84(21):9253-8. PMID: 23013239.
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    30. Adou K, Johnston MV, Dykins JL. Targeted absolute quantification of intact proteins by reversed phase liquid chromatography-mass spectrometry, charge reduced electrospray, and condensation particle counting. Anal Chem. 2012 Aug 21; 84(16):6981-5. PMID: 22812610.
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    31. Bzdek BR, Zordan CA, Pennington MR, Luther GW, Johnston MV. Quantitative assessment of the sulfuric acid contribution to new particle growth. Environ Sci Technol. 2012 Apr 17; 46(8):4365-73. PMID: 22435616.
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    32. Hall WA, Johnston MV. Oligomer formation pathways in secondary organic aerosol from MS and MS/MS measurements with high mass accuracy and resolving power. J Am Soc Mass Spectrom. 2012 Jun; 23(6):1097-108. PMID: 22476934.
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    33. Klems JP, Zordan CA, Pennington MR, Johnston MV. Chemical composition of ambient nanoparticles on a particle-by-particle basis. Anal Chem. 2012 Mar 6; 84(5):2253-9. PMID: 22296258.
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    34. DePalma JW, Bzdek BR, Doren DJ, Johnston MV. Structure and energetics of nanometer size clusters of sulfuric acid with ammonia and dimethylamine. J Phys Chem A. 2012 Jan 26; 116(3):1030-40. PMID: 22185572.
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    35. Klems JP, Pennington MR, Zordan CA, McFadden L, Johnston MV. Apportionment of motor vehicle emissions from fast changes in number concentration and chemical composition of ultrafine particles near a roadway intersection. Environ Sci Technol. 2011 Jul 1; 45(13):5637-43. PMID: 21667963.
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    36. Bzdek BR, Ridge DP, Johnston MV. Size-dependent reactions of ammonium bisulfate clusters with dimethylamine. J Phys Chem A. 2010 Nov 4; 114(43):11638-44. PMID: 20936867.
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    37. Klems JP, Pennington MR, Zordan CA, Johnston MV. Ultrafine particles near a roadway intersection: origin and apportionment of fast changes in concentration. Environ Sci Technol. 2010 Oct 15; 44(20):7903-7. PMID: 20843065.
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    38. Gao Y, Hall WA, Johnston MV. Molecular composition of monoterpene secondary organic aerosol at low mass loading. Environ Sci Technol. 2010 Oct 15; 44(20):7897-902. PMID: 20853884.
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    39. Bzdek BR, Johnston MV. New particle formation and growth in the troposphere. Anal Chem. 2010 Oct 1; 82(19):7871-8. PMID: 20879798.
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    40. Zordan CA, Pennington MR, Johnston MV. Elemental composition of nanoparticles with the nano aerosol mass spectrometer. Anal Chem. 2010 Oct 1; 82(19):8034-8. PMID: 20804130.
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    41. Adou K, Johnston MV. Flow interface for charge-reduced electrospray of nanoparticle solutions. Anal Chem. 2009 Dec 15; 81(24):10186-92. PMID: 19924869.
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    42. Gao Y, Johnston MV. Online deposition of nano-aerosol for matrix-assisted laser desorption/ionization mass spectrometry. Rapid Commun Mass Spectrom. 2009 Dec; 23(24):3963-8. PMID: 19918939.
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    43. Heaton KJ, Sleighter RL, Hatcher PG, Hall WA, Johnston MV. Composition domains in monoterpene secondary organic aerosol. Environ Sci Technol. 2009 Oct 15; 43(20):7797-802. PMID: 19921896.
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    44. Spraggins JM, Lloyd JA, Johnston MV, Laskin J, Ridge DP. Fragmentation mechanisms of oxidized peptides elucidated by SID, RRKM modeling, and molecular dynamics. J Am Soc Mass Spectrom. 2009 Sep; 20(9):1579-92. PMID: 19560936.
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    45. Lloyd JA, Heaton KJ, Johnston MV. Reactive uptake of trimethylamine into ammonium nitrate particles. J Phys Chem A. 2009 Apr 30; 113(17):4840-3. PMID: 19338327.
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    46. Zordan CA, Wang S, Johnston MV. Time-resolved chemical composition of individual nanoparticles in urban air. Environ Sci Technol. 2008 Sep 1; 42(17):6631-6. PMID: 18800541.
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    47. Wexler AS, Johnston MV. What have we learned from highly time-resolved measurements during EPA's Supersites Program and related studies? J Air Waste Manag Assoc. 2008 Feb; 58(2):303-19. PMID: 18318343.
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    48. Reinard MS, Johnston MV. Ion formation mechanism in laser desorption ionization of individual nanoparticles. J Am Soc Mass Spectrom. 2008 Mar; 19(3):389-99. PMID: 18191579.
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    49. Heaton KJ, Dreyfus MA, Wang S, Johnston MV. Oligomers in the early stage of biogenic secondary organic aerosol formation and growth. Environ Sci Technol. 2007 Sep 1; 41(17):6129-36. PMID: 17937292.
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    50. Zhou F, Hanson TE, Johnston MV. Intact protein profiling of Chlorobium tepidum by capillary isoelectric focusing, reversed-phase liquid chromatography, and mass spectrometry. Anal Chem. 2007 Sep 15; 79(18):7145-53. PMID: 17711353.
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    51. Hamilton CS, Greco TM, Vizthum CA, Ginter JM, Johnston MV, Mueller EG. Mechanistic investigations of the pseudouridine synthase RluA using RNA containing 5-fluorouridine. Biochemistry. 2006 Oct 3; 45(39):12029-38. PMID: 17002302.
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    52. Johnston MV, Wang S, Reinard MS. Nanoparticle mass spectrometry: pushing the limit of single particle analysis. Appl Spectrosc. 2006 Oct; 60(10):264-72. PMID: 17059659.
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    53. Lloyd JA, Spraggins JM, Johnston MV, Laskin J. Peptide ozonolysis: product structures and relative reactivities for oxidation of tyrosine and histidine residues. J Am Soc Mass Spectrom. 2006 Sep; 17(9):1289-98. PMID: 16820303.
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    54. Saul TD, Tolocka MP, Johnston MV. Reactive uptake of nitric acid onto sodium chloride aerosols across a wide range of relative humidities. J Phys Chem A. 2006 Jun 22; 110(24):7614-20. PMID: 16774205.
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    55. Wright CM, Christman GD, Snellinger AM, Johnston MV, Mueller EG. Direct evidence for enzyme persulfide and disulfide intermediates during 4-thiouridine biosynthesis. Chem Commun (Camb). 2006 Aug 7; (29):3104-6. PMID: 16855700.
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    56. Wang S, Zordan CA, Johnston MV. Chemical characterization of individual, airborne sub-10-nm particles and molecules. Anal Chem. 2006 Mar 15; 78(6):1750-4. PMID: 16536407.
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    57. Tolocka MP, Heaton KJ, Dreyfus MA, Wang S, Zordan CA, Saul TD, Johnston MV. Chemistry of particle inception and growth during alpha-pinene ozonolysis. Environ Sci Technol. 2006 Mar 15; 40(6):1843-8. PMID: 16570606.
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    58. Dreyfus MA, Tolocka MP, Dodds SM, Dykins J, Johnston MV. Cholesterol ozonolysis: kinetics, mechanism, and oligomer products. J Phys Chem A. 2005 Jul 21; 109(28):6242-8. PMID: 16833964.
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    59. Clements A, Johnston MV, Larsen BS, McEwen CN. Fluorescence-based peptide labeling and fractionation strategies for analysis of cysteine-containing peptides. Anal Chem. 2005 Jul 15; 77(14):4495-502. PMID: 16013865.
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    60. Zhou F, Johnston MV. Protein profiling by capillary isoelectric focusing, reversed-phase liquid chromatography, and mass spectrometry. Electrophoresis. 2005 Apr; 26(7-8):1383-8. PMID: 15759303.
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    61. Hamilton CS, Spedaliere CJ, Ginter JM, Johnston MV, Mueller EG. The roles of the essential Asp-48 and highly conserved His-43 elucidated by the pH dependence of the pseudouridine synthase TruB. Arch Biochem Biophys. 2005 Jan 1; 433(1):322-34. PMID: 15581587.
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    62. Spedaliere CJ, Ginter JM, Johnston MV, Mueller EG. The pseudouridine synthases: revisiting a mechanism that seemed settled. J Am Chem Soc. 2004 Oct 13; 126(40):12758-9. PMID: 15469254.
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    63. Ginter JM, Zhou F, Johnston MV. Generating protein sequence tags by combining cone and conventional collision induced dissociation in a quadrupole time-of-flight mass spectrometer. J Am Soc Mass Spectrom. 2004 Oct; 15(10):1478-86. PMID: 15465361.
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    64. Zhou F, Johnston MV. Protein characterization by on-line capillary isoelectric focusing, reversed-phase liquid chromatography, and mass spectrometry. Anal Chem. 2004 May 15; 76(10):2734-40. PMID: 15144182.
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    65. Cox FJ, Johnston MV, Qian K, Peiffer DG. Compositional analysis of isobutylene/p-methylstyrene copolymers by matrix-assisted laser desorption/ionization mass spectrometry. J Am Soc Mass Spectrom. 2004 May; 15(5):681-8. PMID: 15121197.
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    66. Tolocka MP, Jang M, Ginter JM, Cox FJ, Kamens RM, Johnston MV. Formation of oligomers in secondary organic aerosol. Environ Sci Technol. 2004 Mar 1; 38(5):1428-34. PMID: 15046344.
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    67. Oktem B, Tolocka MP, Johnston MV. On-line analysis of organic components in fine and ultrafine particles by photoionization aerosol mass spectrometry. Anal Chem. 2004 Jan 15; 76(2):253-61. PMID: 14719868.
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    68. Lake DA, Tolocka MP, Johnston MV, Wexler AS. Mass spectrometry of individual particles between 50 and 750 nm in diameter at the Baltimore Supersite. Environ Sci Technol. 2003 Aug 1; 37(15):3268-74. PMID: 12966969.
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    69. Shang TQ, Ginter JM, Johnston MV, Larsen BS, McEwen CN. Carrier ampholyte-free solution isoelectric focusing as a prefractionation method for the proteomic analysis of complex protein mixtures. Electrophoresis. 2003 Jul; 24(14):2359-68. PMID: 12874871.
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    70. Cox FJ, Johnston MV, Dasgupta A. Characterization and relative ionization efficiencies of end-functionalized polystyrenes by matrix-assisted laser desorption/ionization mass spectrometry. J Am Soc Mass Spectrom. 2003 Jun; 14(6):648-57. PMID: 12781466.
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    71. Kane DB, Wang J, Frost K, Johnston MV. Detection of negative ions from individual ultrafine particles. Anal Chem. 2002 May 1; 74(9):2092-6. PMID: 12033311.
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