Keski-Rahkonen, Pekka

English

UEF Electronic Publications

A heated electrospray source for mass spectrometry of analytes from aqueous solutions.

A: An overview of matrix effects in liquid chromatography-mass spectrometry.

A: Anisole, a new dopant for atmospheric pressure photoionization mass spectrometry of low proton affinity, low ionization energy compounds.

A: Micro total analysis systems: Latest achievements.

Alice MB: Molecular beams of macroions.

Alternative high-performance liquid chromatographic peptide separation and purification concept using a new mixed-mode reversed-phase/weak anion-exchange type stationary phase.

Analysis of oxosteroids by nano-electrospray mass spectrometry of their oximes.

Analysis of pesticides in environmental water samples by solid-phase micro-extraction-highperformance liquid chromatography.

and Drug Administration: Guidance for Industry. Bioanalytical method validation.

AP: Atmospheric pressure photoionization: an ionization method for liquid chromatography-mass spectrometry.

Application of ion trap technology to liquid chromatography/mass spectrometry quantitation of large peptides.

Atmospheric pressure photoionization mass spectrometry. Ionization mechanism and the effect of solvent on the ionization of naphthalenes.

Atmospheric pressure photoionization-mass spectrometry with a microchip heated nebulizer.

Bartlett MG: Comparison of time-of-flight mass spectrometry to triple quadrupole tandem mass spectrometry for quantitative bioanalysis: application toantipsychotics.

Benter T: Atmospheric-pressure laser ionization: a novel ionization method for liquid chromatography/mass spectrometry.

Cavoit F: Performance optimisation of a newgeneration orthogonal-acceleration quadrupole-time-of-flight mass spectrometer.

Characterization of self-assembling nano-sized structures by means of coldspray ionization mass spectrometry.

Charge and fission of droplets in electrostatic sprays.

Chavez-Eng CM: Matrix effects in quantitative LC–MS–MS analysis of biological fluids: A method for determination of finasteride in human plasma at pg/ml concentrations.

CM: Electrospray ionization for mass spectrometry of large biomolecules.

Combining liquid chromatography with electrospray mass spectrometry. In: Electrospray Ionization Mass Spectrometry: Fundamentals, Instrumentation, and Applications.

Commission: Commission Decision of 12

Comparative study of new shell-type, sub-2 micron fully porous and monolith stationary phases, focusing on mass-transfer resistance.

Cramers C: Stir bar sorptive extraction (SBSE), a novel extraction technique for aqueous samples: Theory and principles.

Current Trends in HPLC Column Usage.

Derivatization of neutral steroids to enhance their detection characteristics in liquid chromatography-mass spectrometry.

Determination of anabolic steroids in human urine by automated in-tube solid-phase microextraction coupled with liquid chromatography–mass spectrometry.

Determination of D/L-amino acids by zero needle voltage electrospray ionization.

Determination of Steroids by Liquid Chromatography/Mass Spectrometry.

Development and validation of a sensitive liquid chromatography–tandem mass spectrometry assay to simultaneously measure androgens and estrogens in serum without derivatization.

Development of a method for the quantification of 1 alpha,25(OH)(2)-vitamin D(3) in serum by liquid chromatography tandem mass spectrometry without derivatization.

Development of an improved high resolution mass spectrometry based multi-residue method for veterinary drugs in various food matrices.

Disintegration of Water Drops in an Electric Field. Proc R Soc Lond A 280: 383–397,

DK: The application of fully automated on-line solid phase extraction in bioanalysis.

DM: Linear ion traps in mass spectrometry.

Dulcks T: Effect of different solution flow rates on analyte ion signals in nano-ESI MS, or: When does ESI turn into nano-ESI?

E: A novel strategy for reducing phospholipids-based matrix effect in LC-ESI-MS bioanalysis by means of HybridSPE.

Electrospray ion source. Another variation on the free-jet theme.

Electrospray photoionization (ESPI) liquid chromatography/mass spectrometry for the simultaneous analysis of cyclodextrin and pharmaceuticals and their binding interactions.

Electrospray: from ions in solution to ions in the gas phase, what we know now.

Emary WB: Quantitation of small molecules using high-resolution accurate mass spectrometers - a different approach for analysis of biological samples.

Enke CG: Importance of gas-phase proton affinities in determining the electrospray ionization response for analytes and solvents.

Factors affecting primary ionization in dopant-assisted atmospheric pressure photoionization (DA-APPI) for LC/MS.

Facts and myths about columns packed with sub-3 μm and sub-2 μm particles.

Fautsch MP: Proteome analysis of human aqueous humor.

Feng Y-Q: Preparation of pH-responsive stationary phase for reversed-phase liquid chromatography and hydrophilic interaction chromatography.

Fit-for-purpose method development and validation for successful biomarker measurement.

Fornstedt T: Why ultra high performance liquid chromatography produces more tailing peaks than high performance liquid chromatography, why it does not matter and how it can be addressed.

Full-scan high resolution accurate mass spectrometry (HRMS) in regulated bioanalysis: LC-HRMS for the quantitation of prednisone and prednisolone in human plasma.

Future developments for triple quadrupole mass spectrometers: not just hardware.

Garrido Frenich A, Martínez Vidal JL: Food contaminant analysis at high resolution mass spectrometry: Application for the determination of veterinary drugs in milk.

General requirements for the competence of testing and calibration laboratories,

Glass microfabricated nebulizer chip for mass spectrometry. Lab Chip 7:644–646,

Guidugli F: Analysis of protein ions in the range 3000-12000 Th under partial (no discharge) atmospheric pressure chemical ionization conditions using ion trap mass spectrometry.

Higbee DJ: Miniaturization of electrospray ionization mass spectrometry.

High energy collision-induced dissociation of alkalimetal ion adducts of crown ethers and acyclic analogs.

Highlights of HPLC

HILIC at 21: Reflections and perspective.

Horning EC: Atmospheric pressure ionization mass spectrometry: Corona discharge ion source for use in liquid chromatograph-mass spectrometer-computer analytical system.

Horning EC: Gas phase reactions. Ionization by proton transfer to superoxide anions.

HS: Pitfalls in the sample preparation and analysis of N-acylethanolamines.

HT: Sensitivity enhancement in liquid chromatography/atmospheric pressure ionization mass spectrometry using derivatization and mobile phase additives.

Hydrophilic-interaction chromatography for the separation of peptides, nucleic acids and other polar compounds.

Internal surface reversed-phase silica supports for liquid chromatography.

Ion spray interface for combined liquid chromatography/atmospheric pressure ionization mass spectrometry.

Ionization via proton transfer.

JW: Introduction to modern liquid chromatographty, 3rd ed.,

KA: Photoionization mass spectrometry.

Kauppila TJ: Effect of eluent on the ionization process in liquid chromatography-mass spectrometry.

Korfmacher WA: It is time for a paradigm shift in drug discovery bioanalysis: from SRM to HRMS.

Liquid chromatography-mass spectrometry.

Liquid chromatography/mass spectrometry in anabolic steroid analysis—optimization and comparison of three ionization techniques: electrospray ionization, atmospheric pressure chemical ionization and atmospheric pressure photoionization.

LJ: Combined electrospray ionization-atmospheric pressure chemical ionization source for use in high-throughput LC-MS applications.

Matrix matching in liquid chromatography–mass spectrometry with stable isotope labelled internal standards—Is it necessary?

Matrix solid-phase dispersion (MSPD) isolation and liquid chromatographic determination of oxytetracycline, tetracycline, and chlortetracycline in milk.

Merbel NC: Quantitative determination of endogenous compounds in biological samples using chromatographic techniques.

Microchip atmospheric pressure chemical ionization source for mass spectrometry. Anal Chem 76: 6659– 6664,

ML: Liquid chromatograph-mass spectrometer for analysis of nonvolatile samples.

MM: Particle packed columns and monolithic columns in high-performance liquid chromatography-comparison and critical appraisal.

Modern aspects of micro-bore column HPLC.

Multi-atmospheric pressure ionisation interface for liquid chromatography-mass spectrometry.

Multiresidue method for the triphenylmethane dyes in fish: Malachite green, crystal (gentian) violet, and brilliant green Anal Chim Acta 637: 279–289,

MW: An electropneumatic-heated nebulizer for enhancing spray ionization in PhotoSpray atmospheric pressure photoionization sources for liquid chromatography/mass spectrometry.

MW: Investigation of substituted-benzene dopants for charge exchange ionization of nonpolar compounds by atmospheric pressure photoionization.

Nakazawa H: A new strategy for ionization enhancement by derivatization for mass spectrometry.

New trend in sample preparation: on-line microextraction in packed syringe for liquid and gas chromatography applications. I. Determination of local anaesthetics in human plasma samples using gas chromatography-mass spectrometry.

Ojanperä I: Evaluation of a high resolving power time-of-flight mass spectrometer for drug analysis in terms of resolving power and acquisition rate.

On-line liquid chromatography/mass spectrometry? An odd couple!

PC: Signal enhancement for gradient reverse-phase high-performance liquid chromatography electrospray ionization mass spectrometry analysis with trifluoroacetic and other strong acid modifiers by postcolumn addition of propionic acid and isopropanol.

Performance characteristics of a novel tandem mass spectrometry assay for serum testosterone.

Pivnichny JV: Characterization of a technique for rapid pharmacokinetic studies of multiple co-eluting compounds by LC:MS:MS.

Practical comparison of 2.7 µm fused-core silica particles and porous sub-2 µm particles for fast separations in pharmaceutical process development.

PS: Analysis of testosterone and dihydrotestosterone from biological fluids as the oxime derivatives using high-performance liquid chromatography/tandem mass spectrometry.

RA: Microchip technology in mass spectrometry.

RD: Analytical Characterization of the electrospray ion source in the nanoflow regime.

Recent advances in sample preparation techniques for effective bioanalytical methods.

RN: Atmospheric pressure ionization (API) mass spectrometry. Solvent-mediated ionization of samples introduced in solution and in a liquid chromatograph effluent stream.

RN: Atmospheric-pressure ionization mass spectrometry.

RN: Liquid chromatography-mass spectrometer-computer analytical systems: a continuous flow system based on atmospheric pressure ionization mass spectrometry.

SD: No-discharge atmospheric pressure chemical ionization mass spectrometry of ethyl glucuronide and ethyl sulfate.

New LC-MS assays for drugs and endogenous compounds in small-volume biological samples

http://epublications.uef.fi/pub/urn_isbn_978-952-61-0599-4/urn_isbn_978-952-61-0599-4.pdf

New LC-MS assays for drugs and endogenous compounds in small-volume biological samples

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