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List of works by Hilkka Kenttämaa

(-)ESI/CAD MSn Procedure for Sequencing Lignin Oligomers Based on a Study of Synthetic Model Compounds with β-O-4 and 5-5 Linkages.

scientific article published on 8 November 2017

A Fundamental Tandem Mass Spectrometry Study of the Collision-Activated Dissociation of Small Deprotonated Molecules Related to Lignin

scientific article

A Mimivirus Enzyme that Participates in Viral Entry

scientific article published on 14 May 2015

A differentially pumped dual linear quadrupole ion trap (DLQIT) mass spectrometer: a mass spectrometer capable of MS(n) experiments free from interfering reactions

scientific article published on 15 November 2013

An Automated Method for Chemical Composition Analysis of Lubricant Base Oils by Using Atmospheric Pressure Chemical Ionization Mass Spectrometry

scientific article published on 07 August 2019

An ion/molecule reaction for the identification of analytes with two basic functional groups

scientific article

Analysis of base oil fractions by ClMn(H2O)+ chemical ionization combined with laser-induced acoustic desorption/fourier transform ion cyclotron resonance mass spectrometry

scientific article

Analysis of natural products by tandem mass spectrometry employing reactive collisions with ethyl vinyl ether

scholarly article by Robin R. Pachuta et al published January 1988 in Journal of Mass Spectrometry

Analysis of polyethylene by using cyclopentadienyl cobalt chemical ionization combined with laser-induced acoustic desorption/fourier transform ion cyclotron resonance mass spectrometry

scientific article published in July 2005

Analysis of saturated hydrocarbons by using chemical ionization combined with laser-induced acoustic desorption/Fourier transform ion cyclotron resonance mass spectrometry

scientific article

Analysis of xyloglucans by ambient chloride attachment ionization tandem mass spectrometry

scientific article

Analyzing and Tuning the Chalcogen-Amine-Thiol Complexes for Tailoring of Chalcogenide Syntheses

scientific article published on 22 May 2020

Bias, limit of detection, and limit of quantitation for the ASTM D2425 method updated in 2019

scientific article published on 13 November 2019

Bob Squires: “Reactive organic intermediates. Benzynes, trimethylenemethane and beyond”

article

Carbon disulfide reagent allows the characterization of nonpolar analytes by atmospheric pressure chemical ionization mass spectrometry

scientific article

Characterization of aromatic organosulfur model compounds relevant to fossil fuels by using atmospheric pressure chemical ionization with CS2 and high-resolution tandem mass spectrometry

scientific article

Characterization of nonpolar lipids and selected steroids by using laser-induced acoustic desorption/chemical ionization, atmospheric pressure chemical ionization, and electrospray ionization mass spectrometry ⬇️

scientific article published on March 30, 2011

Chemical properties of a para-benzyne

scientific article published in October 2002

Collisional activation of distonic radical cations and their conventional isomers in quadrupole tandem mass spectrometry

scientific article published in 1990

Comparison of Atmospheric Pressure Chemical Ionization and Field Ionization Mass Spectrometry for the Analysis of Large Saturated Hydrocarbons

scientific article published on 4 October 2016

Comparison of the reactivity of the three distonic isomers of the pyridine radical cation toward tetrahydrofuran in solution and in the gas phase

scientific article published on 24 January 2013

Compound screening for the presence of the primary N-oxide functionality via ion-molecule reactions in a mass spectrometer

scientific article published in August 2005

Correlation of hydrogen-atom abstraction reaction efficiencies for aryl radicals with their vertical electron affinities and the vertical ionization energies of the hydrogen-atom donors

scientific article published on December 2008

Data-dependent neutral gain MS3: toward automated identification of the N-oxide functional group in drug metabolites

scientific article

Dehydration Pathways for Glucose and Cellobiose During Fast Pyrolysis

scientific article published on 08 October 2018

Demonstration of tunable reactivity for meta-benzynes

scientific article

Design and characterization of a high-power laser-induced acoustic desorption probe coupled with a fourier transform ion cyclotron resonance mass spectrometer

scientific article

Development of a high-throughput laser-induced acoustic desorption probe and raster sampling for laser-induced acoustic desorption/atmospheric pressure chemical ionization

scientific article

Differentiating Isomeric Deprotonated Glucuronide Drug Metabolites via Ion/Molecule Reactions in Tandem Mass Spectrometry

scientific article published on 23 July 2018

Differentiation of Deprotonated Acyl-, N-, and O-Glucuronide Drug Metabolites by Using Tandem Mass Spectrometry Based on Gas-Phase Ion-Molecule Reactions Followed by Collision-Activated Dissociation

scientific article published on 16 August 2019

Differentiation of Regioisomeric Aromatic Ketocarboxylic Acids by Positive Mode Atmospheric Pressure Chemical Ionization Collision-Activated Dissociation Tandem Mass Spectrometry in a Linear Quadrupole Ion Trap Mass Spectrometer ⬇️

scientific article published on February 12, 2011

Differentiation of stereoisomeric steroids by reactions with phosphenium ions

scientific article

Direct Comparison of Solution and Gas-Phase Reactions of the Three Distonic Isomers of the Pyridine Radical Cation with Methanol ⬇️

scientific article published on January 18, 2012

Direct functionalization of C-H bonds by electrophilic anions

scientific article published on 02 September 2020

Distinguishing Isomeric Aromatic Radical Cations by Using Energy-Resolved Ion Trap and Medium Energy Collision-Activated Dissociation Mass Spectrometry

scientific article published on 21 November 2019

Does the 2,6-didehydropyridinium cation exist?

Effects of Residual Water in a Linear Quadrupole Ion Trap on the Protonation Sites of 4-Aminobenzoic Acid

scientific article published on 20 November 2019

Effects of a Hydroxyl Substituent on the Reactivity of the 2,4,6-Tridehydropyridinium Cation, an Aromatic σ,σ,σ-Triradical

Effects of hydrogen bonding on the gas-phase reactivity of didehydroisoquinolinium cation isomers

scientific article published on 01 August 2018

Energetics of activation of tetracarbonylferrate(1-) and pentacarbonylchromate(1-) in gaseous collisions

article published in 1988

Energy deposition in [Fe(CO)5]+˙ upon collision with a metal surface

scholarly article by Michael J. DeKrey et al published April 1986 in Journal of Mass Spectrometry

Energy-resolved collisional activation of dimethyl phosphonate and dimethyl phosphite ions in a quadrupole ion trap and a triple quadrupole mass spectrometer

scholarly article by Jennifer S. Brodbelt et al published January 1988 in Journal of Mass Spectrometry

Evaluation of a novel approach for peptide sequencing: laser-induced acoustic desorption combined with P(OCH(3))(2)(+) chemical ionization and collision-activated dissociation in a Fourier transform ion cyclotron resonance mass spectrometer

scientific article

Excitation and dissociation of isolated ions derived from polycyclic aromatic hydrocarbons

scientific article published in 1988

Experimental and Theoretical Characterization of the 3,5-Didehydrobenzoate Anion: A Negatively Chargedmeta-Benzyne

scientific article published in 2003

Experimental and computational studies on the formation of three para-benzyne analogues in the gas phase.

scientific article published on 22 May 2013

Experimental investigations of the internal energy of molecules evaporated via laser-induced acoustic desorption into a Fourier transform ion cyclotron resonance mass spectrometer

scientific article

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

scientific article published in 1989

Exploring the Reaction Mechanisms of Fast Pyrolysis of Xylan Model Compounds via Tandem Mass Spectrometry and Quantum Chemical Calculations

scientific article published on 09 October 2019

Factors Affecting the Limit of Detection for HPLC/Tandem Mass Spectrometry Experiments Based on Gas-Phase Ion-Molecule Reactions

scientific article published on 30 April 2020

From furfural to fuel: synthesis of furoins by organocatalysis and their hydrodeoxygenation by cascade catalysis

scientific article published in August 2014

Functional group selective ion/molecule reactions: mass spectrometric identification of the amido functionality in protonated monofunctional compounds

scientific article published on 31 March 2007

Gas-phase Reactivity of meta-Benzyne Analogs Toward Small Oligonucleotides of Differing Lengths

scientific article

Gas-phase ion-molecule reactions for the identification of the sulfone functionality in protonated analytes in a linear quadrupole ion trap mass spectrometer.

scientific article

Gas-phase reactions of charged phenyl radicals with neutral biomolecules evaporated by laser-induced acoustic desorption

scientific article

Gas-phase reactivity of aromatic sigma,sigma-biradicals toward dinucleoside phosphates

scientific article

Gas-phase reactivity of charged pi-type biradicals

scientific article published in October 2004

Gas-phase reactivity of protonated 2-, 3-, and 4-dehydropyridine radicals toward organic reagents

scientific article

Generation and characterization of a distonic biradical anion formed from an enediynone prodrug in the gas phase

scientific article published on 20 March 2013

HPLC/APCI mass spectrometry of saturated and unsaturated hydrocarbons by using hydrocarbon solvents as the APCI reagent and HPLC mobile phase

scientific article

High-performance liquid chromatography/high-resolution multiple stage tandem mass spectrometry using negative-ion-mode hydroxide-doped electrospray ionization for the characterization of lignin degradation products

scientific article published on 29 June 2012

Hydrogen atom abstraction reactions of charged polyaromatic sigma-radicals related to the active intermediates of the enediyne antitumor drugs

scientific article

Identification and Quantitation of Linear Alkanes in Lubricant Base Oils by Using GC×GC/EI TOF Mass Spectrometry

scientific article published on 24 October 2019

Identification and counting of carbonyl and hydroxyl functionalities in protonated bifunctional analytes by using solution derivatization prior to mass spectrometric analysis via ion-molecule reactions

scientific article published on 4 December 2009

Identification of Carboxylate, Phosphate, and Phenoxide Functionalities in Deprotonated Molecules Related to Drug Metabolites via Ion-Molecule Reactions with water and Diethylhydroxyborane

scientific article published on 24 July 2017

Identification of Protonated Sulfone and Aromatic Carboxylic Acid Functionalities in Organic Molecules by Using Ion-Molecule Reactions Followed by Collisionally Activated Dissociation in a Linear Quadrupole Ion Trap Mass Spectrometer.

scientific article published on 16 June 2017

Identification of aliphatic and aromatic tertiary N-oxide functionalities in protonated analytes via ion/molecule and dissociation reactions in an FT-ICR mass spectrometer

scientific article published in February 2009

Identification of the aromatic tertiary N-oxide functionality in protonated analytes via ion/molecule reactions in mass spectrometers

scientific article published on 4 June 2008

Identification of the carboxylic acid functionality by using electrospray ionization and ion-molecule reactions in a modified linear quadrupole ion trap mass spectrometer

scientific article

Influence of hydrogen bonding on hydrogen-atom abstraction reactions of dehydropyridinium cations in the gas phase

scientific article

Integration of a Multichannel Pulsed-Valve Inlet System to a Linear Quadrupole Ion Trap Mass Spectrometer for the Rapid Consecutive Introduction of Nine Reagents for Diagnostic Ion/Molecule Reactions

scientific article published on 21 November 2019

Internal energy distributions acquired through collisional activation at low and high energies

Internal energy distributions of isolated ions after activation by various methods

Ion-molecule reactions for mass spectrometric identification of functional groups in protonated oxygen-containing monofunctional compounds

scientific article published in February 2004

Ion-molecule reactions for the characterization of polyols and polyol mixtures by ESI/FT-ICR mass spectrometry

scientific article published in March 2005

Laser-Induced Acoustic Desorption Mass Spectrometry ⬇️

scientific article published on January 1, 2012

Laser-Induced Acoustic Desorption/Atmospheric Pressure Chemical Ionization Mass Spectrometry ⬇️

scientific article published on January 15, 2011

Laser-Induced Acoustic Desorption/Electron Ionization of Amino Acids and Small Peptides

scientific article

Laser-induced acoustic desorption coupled with a linear quadrupole ion trap mass spectrometer

scientific article

Laser-induced acoustic desorption/fourier transform ion cyclotron resonance mass spectrometry for petroleum distillate analysis

scientific article published in December 2005

Liquid chromatography/tandem mass spectrometry utilizing ion-molecule reactions and collision-activated dissociation for the identification of N-oxide drug metabolites

scientific article published on 7 October 2009

Low-energy collisional activation of polyatomic ions with different target gases

Maleic acid and aluminum chloride catalyzed conversion of glucose to 5-(hydroxymethyl) furfural and levulinic acid in aqueous media

scientific article published in 2016

Mass spectrometric studies of fast pyrolysis of cellulose

scientific article published in January 2015

Mechanism of MTO-Catalyzed Deoxydehydration of Diols to Alkenes Using Sacrificial Alcohols

Mechanistic study of stereoselective gas-phase reactions of phosphenium ions with cis- and trans-1,2-diaminocyclohexanes

scientific article published on 01 July 2002

Molecular-Level Understanding of the Major Fragmentation Mechanisms of Cellulose Fast Pyrolysis: An Experimental Approach Based on Isotopically Labeled Model Compounds

scientific article published on 22 May 2019

On the factors that control the reactivity of meta-benzynes

article published in 2014

On-line mass spectrometric methods for the determination of the primary products of fast pyrolysis of carbohydrates and for their gas-phase manipulation

scientific article

Phenyl radical-induced damage to dipeptides

scientific article

Phenyl radicals react with dinucleoside phosphates by addition to purine bases and H-atom abstraction from a sugar moiety

scientific article published in September 2005

Photodechlorination of 3,3'-dichlorobenzidine in water

scientific article

Polar Effects Control the Gas-phase Reactivity of Charged para-Benzyne Analogs

scientific article published on February 2015

Properties and reactivity of gaseous distonic radical ions with aryl radical sites

scientific article

Quantitative determination of the selectivities of five different phenyl radicals in hydrogen atom abstraction from ethanol

scientific article

Quantum Chemical Characterization of the Structures, Thermochemical Properties, and Singlet−Triplet Splittings of Didehydroquinolinium and Didehydroisoquinolinium Ions

scientific article published in November 2005

Quantum Chemical Characterization of the Vertical Electron Affinities of Didehydroquinolinium and Didehydroisoquinolinium Cations

scientific article published in August 2006

Quantum chemical characterization of the structures, thermochemical properties, and doublet-quartet splittings of tridehydropyridinium cations

scientific article published on 27 May 2008

Quinoline Triradicals: A Reactivity Study

scientific article published on 16 April 2019

Reactions of an aromatic σ,σ-biradical with amino acids and dipeptides in the gas phase

scientific article

Reactions of charged phenyl radicals with aliphatic amino acids in the gas phase

scientific article

Reactivity Controlling Factors for an Aromatic Carbon-Centered σ,σ,σ-Triradical: The 4,5,8-Tridehydroisoquinolinium Ion.

scientific article published on 23 November 2015

Reactivity and Selectivity of Charged Phenyl Radicals toward Amino Acids in a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer ⬇️

scientific article published on May 25, 2011

Reactivity of a σ,σ,σ,σ-Tetraradical: The 2,4,6-Tridehydropyridine Radical Cation ⬇️

scientific article published on January 23, 2012

Reactivity of an aromatic sigma,sigma,sigma-triradical: the 2,4,6-tridehydropyridinium cation

scientific article published in January 2007

Reactivity of aromatic sigma, sigma-biradicals toward riboses

scientific article published on 28 August 2006

Reactivity of substituted charged phenyl radicals toward components of nucleic acids

scientific article published in February 2003

Reactivity of the 4,5‐Didehydroisoquinolinium Cation ⬇️

scientific article published on June 12, 2012

Reactivity of the N-methylene-5,8-didehydroisoquinolinium triradical ion.

scientific article published in September 2005

Recent Advances in Petroleum Analysis by Mass Spectrometry

scientific article published on 30 November 2018

Speciation of CuCl and CuCl2 Thiol-Amine Solutions and Characterization of Resulting Films: Implications for Semiconductor Device Fabrication.

scientific article

Spin-Spin Coupling Between Two meta-Benzyne Moieties In a Quinolinium Tetraradical Cation Increases Their Reactivities

scientific article published on 25 February 2019

Substituent Effects on the Nonradical Reactivity of 4-Dehydropyridinium Cation ⬇️

scientific article published on March 15, 2012

Substituent Effects on the Reactivity of the 2,4,6-Tridehydropyridinium Cation, an Aromatic σ,σ,σ-Triradical

scientific article published on 15 November 2018

Tautomer characterization by energy resolved mass spectrometry. Dimethyl phosphite and dimethyl phosphonate ions

scientific article published in 1985

The selectivity of charged phenyl radicals in hydrogen atom abstraction reactions with isopropanol

scientific article

Theoretical and experimental investigations on the chemical reactions of positively charged phenyl radicals with cytosine and 1-methylcytosine

scientific article published in August 2003

Theoretical and experimental investigations on the reactions of positively charged phenyl radicals with aromatic amino acids

scientific article published in June 2005

UV-induced effects on chlorination of creatinine

scientific article published on 31 May 2013

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