Kenttämaa Labs

Analytical & Physical Organic Chemistry

Older Publications

1999

"Gas-Phase Reactions of the Dichlorocarbene Radical Cation", E.D. Nelson, S.E. Tichy, H.I. Kenttämaa, Perkin Trans. Actions II (1999) 2267-2272 (invited article, memorial issue in honor of Bob Squires).

"Diastereoselectivity in Gas-Phase Hydride Reduction Reactions of Ketones", A. Artau, Y. Ho, H.I. Kenttämaa, R.R. Squires, J. Am. Chem. Soc.  121 (1999) 7130-7137.

"Laser Desorption in Transmission Geometry Inside a Fourier-Transform Ion Cyclotron Resonance Mass Spectrometer", J. Perez, C.J. Petzold, M.A. Watkins, W.E. Vaughn, H.I. Kenttämaa,J. Am. Soc. Mass Spectrom. 10 (1999) 1105-1110.

"Determination of 3,3'-Dichlorobenzidine and Its Degradation Products in Environmental Samples with a Small Low-Field Fourier-Transform Ion Cyclotron Resonance Mass Spectrometer", M.C. Nyman, J. Perez, E.R. Blatchley III, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 10 (1999) 1152-1156.

"Reactivity of Cl-P+-Cl Toward Cyclic Organic Ethers", L.E. Ramirez-Arizmendi, Y.-Q. Yu, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 10 (1999) 379-385.

"Reactivity of a Substituted m-Benzyne Biradical", K.K. Thoen, H.I. Kenttämaa, J. Am. Chem. Soc. 121 (1999) 800-805.

"Intrinsic Acidity and Redox Properties of the Adenine Radical Cation", T. Hwang, C. Stumpf, Y.-Q. Yu, H.I. Kenttämaa, Int. J. Mass Spectrometry 182/183 (1999) 253-259 (invited article; a memorial issue in honor of Ben Freiser).

"Reactions of tert-Butyl Isocyanide with Distonic Radical Cations", E.D. Nelson, R. Li, H.I. Kenttämaa, Int. J. Mass Spectrom. Ion Processes 185/186/187 (1999) 91-96.

 

1998

"Synthesis of Charged Phenyl Mono- and Biradicals by Photolysis in a FT-ICR Mass Spectrometer", K.K. Thoen, J. Perez, J.J. Ferra, Jr., H.I. Kenttämaa, H.I. J. Am. Soc. Mass Spectrom. 9 (1998) 1135-1140.

"The Dimethylene Ketene Radical Cation", P.K. Chou, K.K. Thoen, H.I. Kenttämaa, J. Org. Chem. 63 (1998) 4470-4474.

"Gas-Phase Reactivity of the 2,6- and 3,5-Dimethylenepyridinium Biradicals", E.D. Nelson, K.K. Thoen, H.I. Kenttämaa, J. Am. Chem. Soc. 120 (1998) 3792-3798.

"Disulfide Bond Cleavage in Neutral Substrates by the Dimethylene Ketene Radical Cation inside a Mass Spectrometer", K.K. Thoen, D. Tutko, J. Pèrez, R.L. Smith, H.I. Kenttämaa, Int. J. Mass Spectrom. Ion Processes, 175 (1998) 173-177.

 

1997

"Stereoselective Chemical Ionization Mass Spectrometry: Reactions of CH3OPOCH3+ with Cyclic Vicinal Diols", K.K. Thoen, L. Gao, T.D. Ranatunga, P. Vainiotalo, H.I. Kenttämaa, J. Org. Chem. 62 (1997) 8702-8707.

"Electron and Proton Transfer Reactions of Simple Aldehyde and Ketone Radical Cations and their Enol and Distonic Isomers in the Gas Phase", H.C.M. Byrd, L.M. Castro, Y.-Q. Yu, C.T. Hwang, H.I. Kenttämaa, Int. J. Mass Spectrom. Ion Processes 167/168 (1997) 403-414.

"Reactions of Alkyl Halides with Distonic Acylium Radical Cations", R.L. Smith, K.K. Thoen, K.M. Stirk, H.I. Kenttämaa, Int. J. Mass Spectrom. Ion Processes 165/166 (1997) 315-325.

"Synthesis and Characterization of Aromatic Biradicals in the Gas Phase: a meta-Benzyne with an Inert Positively Charged Substituent and Its ortho- and para- Isomers", K.K. Thoen, H.I. Kenttämaa, J. Am. Chem. Soc. 119 (1997) 3832-3833.

"Disubstituted Boron Cations Cleave Carbonyl Bonds", T.D. Ranatunga, J.M. Kennady, H.I. Kenttämaa, J. Am. Chem. Soc. 119 (1997) 5200-5207.

 

1996

"The Radical Cation of Trimethylphosphine Oxide", R. Li, A. Schweighofer, H. Keck, W. Kuchen, H.I. Kenttämaa, Int. J. Mass Spectrom. Ion Processes 157/158 (1996) 293-303.

"The Prototypical Organophosphorus Ylidion CH2PH3+", A. Schweighofer, P.K. Chou, K.K. Thoen, V.K. Nanayakkara, H. Keck, W. Kuchen, H.I. Kenttämaa, J. Am. Chem. Soc. 118 (1996) 11893-11897.

"Charged Phenyl Radicals", K.K. Thoen, R.L. Smith, J. Nousiainen, E.D. Nelson, H.I. Kenttämaa, J. Am. Chem. Soc. 118 (1996) 8669-8676.

"Characterization of Long-Chain Carboxylic Acid Esters with CH3OBOCH3+ in a Small Fourier-Transform Ion Cyclotron Resonance Mass Spectrometer", K.K. Thoen, D.T. Tutko, T.D. Ranatunga, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 7 (1996) 1138-1143.

"Distinguishing Conventional and Distonic Radical Cations by Using Dimethyl Diselenide", K.K. Thoen, B.J. Beasley, R.L. Smith, H.I. Kenttämaa, J. Am. Soc. Mass Spectrom. 17 (1996) 1245-1250.

"Fluorine Substitution Enhances the Reactivity of Substituted Phenyl Radicals Toward Organic Hydrogen Atom Donors", R. Li, R. L. Smith, H.I. Kenttämaa, J. Am. Chem. Soc. 118 (1996) 5056-5061.

"Unusual Reactivity of the Radical Cations of Some Simple Trivalent Organophosphorus Compounds Toward Dimethyl Disulfide and Dimethyl Diselenide", R. L. Smith, A. Schweighofer, H. Keck, W. Kuchen, H.I. Kenttämaa, J. Am. Chem. Soc. 118 (1996) 1408-1412.

"Homolytic Se-H Bond Energy and Ionization Energy of Benzeneselenol and the Acidity of the Corresponding Radical Cation", D.T. Leeck, R. Li, L.J. Chyall, H.I. Kenttämaa, J. Phys. Chem. 100 (1996) 6608-6611.

"Methyl Propionate Radical Cation", J.M.H. Pakarinen, P. Vainiotalo, C.L. Stumpf, D.T. Leeck, P.K. Chou, H.I. Kenttämaa,J. Am. Soc. Mass Spectrom. 7 (1996) 482-489.

"Structure and Reactivity of Selected Distonic Radical Cations", R.L. Smith, P.K. Chou, H.I. Kenttämaa, a chapter in, "The Structure, Energetics, and Dynamics of Organic Ions", pp 197-261, Ed: T. Baer, C.Y. Ng, I. Powis, Wiley Series on Ion Chemistry and Physics, 1996.

"An Experimental and Theoretical Study of the Long-Lived Radical Cation of CH3OCH2CH2OH", J.M.H. Pakarinen, R.L. Smith, P. Vainiotalo, T.A. Pakkanen, H.I. Kenttämaa, J. Am. Chem. Soc. 118 (1996) 3914-3921.

 

1995

"The Site of Protonation of Aniline", R.L. Smith, L.J. Chyall, B.J. Beasley, H.I. Kenttämaa, J. Am. Chem. Soc. 117 (1995) 7971-7973.

"Reactivity of the Prototype Organosulfur Distonic Ion: CH2SH2+", P.K. Chou, R.L. Smith, L.J. Chyall, H.I. Kenttämaa, J. Am. Chem. Soc. 117 (1995) 4374-4378.

"A General Method for the Synthesis of Charged Phenyl Radicals in the Gas Phase", R.L. Smith, H.I. Kenttämaa, J. Am. Chem. Soc. 117 (1995) 1393-1396.

"Gas-Phase Reactions of the 4-Dehydroanilinium Ion and Its Isomers", L.J. Chyall, H.I. Kenttämaa, J. Mass Spectrom. 30 (1995) 81-87.

"Gas-Phase Reactions of Dicoordicated Boron Cations with Alcohols", T.D. Ranatunga, H.I. Kenttämaa, Inorg. Chem. 34 (1995) 18-27.

"Differentiation of Stereoisomeric Diols by Using CH3OB+OCH3 in a Small Fourier-Transform Ion Cyclotron Resonance Mass Spectrometer", D.T. Leeck, T.D. Ranatunga, R.L. Smith, T. Partanen, P. Vainiotalo, H.I. Kenttämaa, Int. J. Mass Spectrom. Ion Processes 141 (1995) 229-240.

"A New Reagent for Structure Specific Ion-Molecule Reactions. Dimethyl Diselenide", B.J. Beasley, R.L. Smith, H.I. Kenttämaa, J. Mass Spectrom. 30 (1995) 384-385.

 

1994

"Reactions of the Charged Radical (CH3)2S+-CH2• with Cyclic Alkenes", L.J. Chyall, M. Byrd and H.I. Kenttämaa, J. Am. Chem. Soc. 116 (1994) 10767-10772.

"The 4-Dehydroanilinium Ion: A Stable Distonic Isomer of Ionized Aniline", L.J. Chyall and H.I. Kenttämaa, J. Am. Chem. Soc. 116 (1994) 3135-3136.

"The Long-Lived Radical Cations of Simple Carbon Esters Isomerize to the Lowest-Energy Structure", D.T. Leeck, K.G. Stirk, L. Zeller, L.M. Kiminkinen, L. Castro, P. Vainiotalo and H.I. Kenttämaa, J. Am. Chem. Soc. 116 (1994) 3028-3038.

"The Acyclic Distonic Isomer of Ionized Cyclopentanone: •CH2CH2CH2CH2CO+", R.L. Smith, L. Chyall, P.M. Chou and H.I. Kenttämaa, J. Am. Chem. Soc. 116 (1994) 781-782.

"The Heat of Formation of the Radical Cation of Dimethyl Disulfide", D.T. Leeck and H.I. Kenttämaa, Org. Mass Spectrom. 29 (1994) 106-107

"Comparison of Energy-Resolved Low-Energy CAD of Stable and Isomerizing Ions in an FT-ICR and in Other Tandem Mass Spectrometers", K.M. Stirk, P. Lin, T.D. Ranatunga, L.C. Zeller, J.T. Farrell, Jr. and H.I. Kenttämaa, Int. J. Mass Spectrom. Ion Processes 130 (1994) 187-205.

"Long-Lived Distonic Radical Cations", H.I. Kenttämaa, Org. Mass Spectrom. 29 (1994) 1-10 (an invited ACCOUNTS article). 

 

1993

"Radical Type Reactivity of the Methylene Dimethylsulfonium Ion (CH3)2S+-CH2•", R.L. Smith, L.J. Chyall, K.M. Stirk and H.I. Kenttämaa, Org. Mass Spectrom. 28 (1993) 1623-1631

"An Experimental and Theoretical Study of Ionized Hydroxyacetone: A Stable Hydrogen-Bridged Radical Cation", J.M.H. Pakarinen, P. Vainiotalo, T.A. Pakkanen and H.I. Kenttämaa, J. Am. Chem. Soc. 115 (1993) 12431-12440

"The Heat of Formation of (CH3O)2B+", T. Ranatunga, J.C. Poutsma, R.R. Squires and H.I. Kenttämaa, Int. J. Mass Spectrom. Ion Processes 128 (1993) L1-L4.

"Organic Radical Cations Abstract Methylene from Ketene to Produce Stable Distonic Ions", R.L. Smith, R. Franklin, K.M. Stirk and H.I. Kenttämaa, J. Am. Chem. Soc. 115 (1993) 10348-10355.

"Characterization of a Small FT/ICR Mass Spectrometer Based on a Permanent Magnet", L.C. Zeller, J.M. Kennady, H.I. Kenttämaa, and J.E. Campana, Anal. Chem. 65 (1993) 2116-2118.

"Bimolecular Reactions Involving the Radical Site of the Distonic Ion •CH2CH2CH2CO+", K.M. Stirk, R.L. Smith, J.C. Orlowski and H.I. Kenttämaa, Rapid Commun. Mass Spectrom. 7 (1993) 392-39

"Multiple-Stage Mass Spectrometry in Structural Characterization of Organo-phosphorus Compounds", L. Zeller, J. Farrell, Jr., T. Kuivalainen and H. Kenttämaa, J. Am. Soc. Mass Spectrom. 4 (1993) 125-134

 

1992

"Bimolecular Reactions of •CH2CH2OCH2+: A Comparison with the Chemical Properties of CH3CH2OCH2+ and Ionized Trimethylene Oxide", H.I. Kenttämaa, M.L. Kiminkinen, J. Orlowski and K.G. Stirk, Rapid Commun. Mass Spectrom. 6 (1992) 734-740.

"Reaction of O2+• with CH4: A Study of Ion Energies in a Dual-Cell FT-ICR", P. Lin and H.I. Kenttämaa, Org. Mass Spectrom. 27 (1992) 1155-1156

"Transfer of Ionized Ketene from •CH2CH2CH2CO+ to Acetone", K.M. Stirk and H.I. Kenttämaa, Org. Mass Spectrom. 27 (1992) 1153-1154. 

"The Identification of Distonic Radical Cations on the Basis of a Reaction with Dimethyl Disulfide", K.G. Stirk, J. Orlowski, D.T. Leeck and H.I. Kenttämaa, J. Am. Chem. Soc. 114 (1992) 8604-8606

"Dicoordinated Boron Cations Dehydrate Organic Ethers in the Gas Phase", T.D. Ranatunga and H.I. Kenttämaa, J. Am. Chem. Soc. 114 (1992) 8600-8604

"Ion-Molecule Reactions of Distonic Radical Cations", K.G. Stirk, M.L. Kiminkinen and H.I. Kenttämaa, Chem. Rev. 92 (1992) 1649-1665 (an invited review).

"Protonated Propylene Oxide is Stable in the Gas Phase", P. Lin and H.I. Kenttämaa, J. Phys. Org. Chem. 5 (1992) 201-208.

"On the Structure of the Long-Lived Radical Cation of Ethyl Acetate", L.K.M. Kiminkinen, L.C. Zeller, H.I. Kenttämaa, J. Chem. Soc. Chem. Commun. (1992) 466-468.

"A Remarkably Unreactive Organic Radical Cation: The Distonic Isomer of the Unstable Molecular Ion of Dimethyl Propyl Phosphate", L.K.M. Kiminkinen, K. Stirk and H. Kenttämaa, J. Am. Chem. Soc. 114 (1992) 2027-2031.

"Long-Lived Radical Cations of Simple Organophosphates Isomerize Spontaneously to Distonic Structures in the Gas Phase", L. Zeller, J.T. Farrell, Jr., P. Vainiotalo, and H.I. Kenttämaa J. Am. Chem. Soc. 114 (1992) 1205-1214.

"Bimolecular Reactions of the β-Distonic Isomer of the Ethanol Radical Cation", K. Stirk and H.I. Kenttämaa, J. Phys. Chem. 96 (1992) 5273-5276.

 

1991

"Radical Type Reactivity in a γ-Distonic Radical Cation: A Gas-Phase Experimental Study", K.G. Stirk and H.I. Kenttämaa, J. Am. Chem. Soc. 113 (1991) 5880-5881.

"Information on the Location of Carbon-Carbon Double Bonds in C6-C23 Linear Alkenes on the basis of Carbon-Addition Reactions in a Quadrupole Ion Trap Equipped with a Pulsed Sample Inlet System", J. Einhorn, H. Kenttämaa and R.G. Cooks, J. Am. Soc. Mass Spectrom. 2 (1991) 303-313.

"A Simple Method for Ion Isolation in Fourier Transform Ion Cyclotron Resonance Mass Spectrometry:  Combined Notch Excitation and Selective Ion Partitioning in a Dual-Cell", J.T. Farrell, Jr., P. Lin and H. Kenttämaa, Anal. Chim. Acta 246 (1991) 227-232.

 

1990

"Pulsed Gas Introduction Into Quadrupole Ion Traps", B. Emary, R. Kaiser, H. Kenttämaa and R.G. Cooks, J. Am. Soc. Mass Spectrom. 1 (1990) 308-311

"Effective Ion Temperatures in a Quadrupole Ion Trap", B. Nourse and H.I. Kenttämaa, J. Phys. Chem. 94 (1990) 5809-5812. 

"Collisional Activation of Distonic Radical Cations and Their Conventional Isomers in Quadrupole Tandem Mass Spectrometry", V.H. Wysocki and H.I. Kenttämaa, J. Am. Chem. Soc. 112 (1990) 5110-5116.

 

1989

"Identification of Protonated  β-Hydroxycarbonyl Compounds by Reactive Collisions in Tandem Mass Spectrometry", H.I. Kenttämaa and R.G. Cooks, J. Am. Chem. Soc. 111 (1989) 4122-4123.

"Characterization and Semiquantitative Determination of Organophosphorus Compounds based on Inhibition of Cholinesterase Enzymes", K. Alfthan, H.I. Kenttämaa and T. Zukale, Anal. Chim. Acta 217 (1989) 43-51.

"An Experimental Study of the Potential Energy Surface of the Protonated Cyclohexene Oxide/Cyclohexanone System.  Isomerization, Dissociation and Ion-Molecule Reactions of the Isolated Ions in the Gas Phase", H.I. Kenttämaa, R.R. Pachuta, A. Rothwell and R.G. Cooks,  J. Am. Chem. Soc. 111 (1989) 1654-1665.

"Low-Energy Collisional Activation of Polyatomic Ions with Different Target Gases", K. Schey, H.I. Kenttämaa, V.H. Wysocki and R.G. Cooks, Int. J. Mass Spectrom. Ion Processes 90 (1989) 71-82. 

 

1988

"Energetics of Activation of Fe(CO)4- and Cr(CO)5- in Gaseous Collisions", V.H. Wysocki, H.I. Kenttämaa and R.G. Cooks, J. Phys. Chem. 92 (1988) 6465-6469.

"Gas-Phase Ion-Molecule Reactions of Thioic and Dithioic Acid Derivatives.  Condensation Reactions with Alkenes and Alkynes", C. Paradisi, H. Kenttämaa, Q.T. Le and M.C. Caserio, Org. Mass Spectrom. 23 (1988) 521-526.

"Analysis of Natural Products by Tandem Mass Spectrometry Employing Reactive Collisions with Ethyl Vinyl Ether", R.R. Pachuta, H.I.  Kenttämaa, R.G. Cooks, T.M. Zennie, C. Ping, C.-J. Chang and J.M.  Cassady, Org. Mass Spectrom. 23 (1988) 10-14.

"Energy-resolved Collisional Activation of Dimethyl Phosphonate and Dimethyl Phosphite Ions in a Quadrupole Ion Trap and a Triple Quadrupole Mass Spectrometer", J.S. Brodbelt, H.I. Kenttämaa and R.G. Cooks, Org. Mass Spectrom. 23 (1988) 6-9.

"Excitation and Dissociation of Isolated Ions Derived from Polycyclic Aromatic Hydrocarbons", S.J. Pachuta, H.I. Kenttämaa, T.M. Sack, R.L. Cerny, K.B. Tomer, M.L. Gross, R.R. Pachuta and R.G. Cooks, J. Am. Chem. Soc. 110 (1988) 657-665.

 

1987

"Reactions of Isolated Bicyclic Hydrocarbon Ions Excited by Different Methods", P. Vainiotalo, H.I. Kenttämaa, Md.A. Mabud, J. O'Lear and R.G. Cooks, J. Am. Chem. Soc. 109 (1987) 3187-3194.

"Internal Energy Distributions of Isolated Ions After Activation by Different Means", V.H. Wysocki, H.I. Kenttämaa and R.G. Cooks, Int. J. Mass Spectrom. Ion Processes 75 (1987) 181-208.

 

1986

"Energy Deposition in [Fe(C0)5]+. upon Collision with a Metal Surface", M.J.  DeKrey, H.I. Kenttämaa, V.H. Wysocki and R.G. Cooks, Org. Mass Spectrom. 21 (1986) 193-195.

 

1985

"Effects of Stepwise Excitation on Fragmentation of Gas Phase Ions:  An Especially Striking Case", H.I. Kenttämaa, Org. Mass Spectrom. 20 (1985) 703-714.

"Tautomer Characterization by Energy Resolved Mass Spectrometry.  Dimethyl Phosphite and Dimethyl Phosphonate Ions", H.I. Kenttämaa and R.G. Cooks, J. Am. Chem. Soc. 107 (1985) 1881-1886.

"Internal Energy Distributions Acquired Through Collisional Activation at Low and High Energies", H.I. Kenttämaa and R.G. Cooks, Int. J. Mass Spectrom. Ion Proc. 64 (1985) 79-83.

 

1983

"Scanning a Triple Quadrupole Mass Spectrometer for Doubly Charged Ions", H.I. Kenttämaa, K.V. Wood, K.L. Busch and R.G. Cooks, Org. Mass Spectrom. 18 (1983) (12) 561-567.

"The Fragmentation Behavior of Cyclophosphamide and Some Simple Cyclophosphamide Related Compounds upon Electron Impact", H.I. Kenttämaa, P. Savolahti and J. Koskikallio, Int. J. Mass Spectrom. Ion Phys. 47 (1983) 463-466.

"Electron Impact Induced Fragmentation of Some Bicyclic Organophosphorus Compounds", H.I. Kenttämaa, Int. J. Mass Spectrom. Ion Phys. 47 (1983) 459-462.

"Mass Spectrometric Methods in Structural Analysis of Some Vesicants", E.  Ali-Mattila, K. Siivinen, H. Kenttämaa and P. Savolahti, Int. J. Mass Spectrom.Ion Phys. 47 (1983) 371-374.

 

1980

"Electron Impact Induced Fragmentation of 4-Alkyl Derivatives of 2,6,7-Trioxa-l-phosphabicyclo[2.2.2]octane and the Corresponding l-Oxides, l-Sulfides and l-Selenides", H. Kenttämaa and J. Enqvist, Org. Mass Spectrom. 15 (1980) (10) 520-525.

 

Other Publications (not refereed)

"Unimolecular Gas-Phase Reactions of Some Organophosphorus Ester Ions and Effects of Stepwise Collisional Excitation", H.I. Kenttämaa, Ph.D. Thesis, Department of Chemistry, University of Helsinki, University Press, Helsinki 1985. 

"A Simple Method for Ion Isolation in Fourier Transform Ion Cyclotron Resonance Mass Spectrometry: Combined Notch Excitation and Selective Ion Partitioning in a Dual-Cell", J.T. Farrell, Jr., P. Lin and H.I. Kenttämaa, ICR/Ion Trap Newsletter (1990), no. 19. 

"Analytical Chemistry at Purdue University", H.I. Kenttämaa, Trends in Analytical Chemistry, 111 (1992) VI.

"Distonic Radical Cations Can Be Identified on the Basis of a Bimolecular Reaction", K.M. Stirk, J.C. Orlowski, D.T. Leeck and H.I. Kenttämaa, ICR/Ion Trap Newsletter (1992), no. 27.

"Dimethyl Diselenide in the Identification of Distonic Radical Cations", B.B. Beasley, R.L. Smith and H.I. Kenttämaa, ICR/Ion Trap Newsletter (1994), no. 35.

“The Dimethoxy Phosphenium Ion Reacts Selectively with Stereoisomeric Diols in the Gas Phase”, K.K. Thoen, L. Gao, T.D. Ranatunga, T.D.; P. Vainiotalo; Kenttämaa, H.I., ICR/Ion Trap Newsletter (1997), no. 47, p.15. 

“Bob Squires: Reactive Organic Intermediates. Benzynes, Trimethylenemethane and Beyond”, H.I. Kenttämaa, Perkin Trans. Actions II (11) (1999) 2233-2240 (invited article, a memorial issue in honor of Bob Squires).

“A Personal Reminiscence”, Kenttämaa, H.I.  Int. J. Mass Spectrom. 195/196 (2000) xv-xvi (invited article, memorial issue in honor of Bob Squires).

“A Biographical Sketch”, Kenttämaa, H.I.  Int. J. Mass Spectrom. 195/196 (2000) xvii-xix (invited article, memorial issue in honor of Bob Squires).

“Laser-Induced Acoustic Desorption (LIAD) Mass Spectrometry”, Proceedings of ISMAS Silver Jubilee Symposium on Mass Spectrometry, S.S. Aggarwal, Ed., Perfect Prints, India (2003): pp. 183-191

 

Reports

"Identification of Potential Organophosphorus Warfare Agents", J.  Enqvist, H. Kenttämaa et al., the Ministry for Foreign Affairs of Finland, Helsinki 1979, 199 pp.

"Identification of Degradation Products of Potential Organophosphorus Warfare Agents", J. Enqvist, H. Kenttämaa et al., the Ministry for Foreign Affairs of Finland, Helsinki 1980, 203 pp.

"Enzymatic Analysis", H. Kenttämaa, M. Isomäki and L. Pirilä, in "Trace Analysis of Chemical Warfare Agents. 1. An Approach to the Environmental Monitoring of Nerve Agents", J. Enqvist et al., The Ministry for Foreign Affairs of Finland, Helsinki 1981.

"Mass Spectrometry", H. Kenttämaa et al., in "Systematic Identification of Chemical Warfare Agents", J. Enqvist et al., the Ministry for Foreign Affairs of Finland, Helsinki 1982.

"Enzymatic Analysis", K. Sipponen and H. Kenttämaa, in "Systematic Identification of Chemical Warfare Agents", J. Enqvist et al., the Ministry for Foreign Affairs in Finland, Helsinki 1982

"MS/MS Experiments", H.I. Kenttämaa, in "Systematic Identification of Chemical Warfare Agents.  B.4. Identification of Precursors of Warfare Agents, Degradation Products of Non-Phosphorus Agents, and Some Potential Agents", J. Enqvist et al., the Ministry for Foreign Affairs of Finland, Helsinki 1983.