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List of works by Koit Herodes

A highly sensitive method for the simultaneous UHPLC-MS/MS analysis of clonidine, morphine, midazolam and their metabolites in blood plasma using HFIP as the eluent additive

scientific article published on 10 March 2017

A review of analytical techniques for determination of Sudan I-IV dyes in food matrixes

scientific article published on 24 February 2010

A sensitive method for free amino acids analysis by liquid chromatography with ultraviolet and mass spectrometric detection using precolumn derivatization with diethyl ethoxymethylenemalonate: application to the honey analysis

scientific article published on 10 April 2010

Acidity constants in different media (I=0 and I=0.1 M KCl) from the uncertainty perspective

scientific article published on 22 June 2006

Combating matrix effects in LC/ESI/MS: the extrapolative dilution approach

scientific article published on 6 August 2009

Co‐introduction of native mycorrhizal fungi and plant seeds accelerates restoration of post‐mining landscapes

scientific article published on 13 May 2020

Dependence of matrix effect on ionization polarity during LC-ESI-MS analysis of derivatized amino acids in some natural samples

scientific article published on 6 June 2017

Electrospray ionization matrix effect as an uncertainty source in HPLC/ESI-MS pesticide residue analysis

scientific article published in January 2010

Enhanced nebulization efficiency of electrospray mass spectrometry: improved sensitivity and detection limit

scientific article published on 22 September 2012

Establishing Atmospheric Pressure Chemical Ionization Efficiency Scale

scientific article

Estimation of uncertainty in pKa values determined by potentiometric titration

scientific article published on 22 April 2004

Evaluation of the botanical origin of estonian uni- and polyfloral honeys by amino acid content

scientific article published in November 2008

Ionic equilibria in aqueous organic solvent mixtures The equilibria of HF in an ethanol + water mixture used for cleaning up semiconductors

Matrix effects in pesticide multi-residue analysis by liquid chromatography-mass spectrometry

scientific article

Optimization of electrospray interface and quadrupole ion trap mass spectrometer parameters in pesticide liquid chromatography/electrospray ionization mass spectrometry analysis

scientific article published in April 2010

Pharmacokinetics of doripenem during high volume hemodiafiltration in patients with septic shock

scientific article published on 30 December 2014

Pharmacokinetics of penicillin G in preterm and term neonates

scientific article published on 20 February 2018

Plant uptake of some pharmaceuticals commonly present in sewage sludge compost

article

Rapid Determination of Meropenem in Biological Fluids by LC: Comparison of Various Methods for Sample Preparation and Investigation of Meropenem Stability

Short versus long infusion of meropenem in very-low-birth-weight neonates

scientific article

Signal Enhancement in the HPLC-ESI-MS/MS analysis of spironolactone and its metabolites using HFIP and NH4F as eluent additives

scientific article published on 21 February 2017

Simultaneous determination of fluoroquinolones, sulfonamides and tetracyclines in sewage sludge by pressurized liquid extraction and liquid chromatography electrospray ionization-mass spectrometry.

scientific article published on 13 June 2009

Solute‐solvent and solvent‐solvent interactions in binary solvent mixtures. 2. Effect of temperature on the ET(30) polarity parameter of dipolar hydrogen bond acceptor‐hydrogen bond donor mixtures

Sponge Spray-Reaching New Dimensions of Direct Sampling and Analysis by MS.

scientific article published on 13 October 2017

Towards the electrospray ionization mass spectrometry ionization efficiency scale of organic compounds

scientific article published in January 2008

Tutorial review on validation of liquid chromatography-mass spectrometry methods: part I.

scientific article published on 13 February 2015

Tutorial review on validation of liquid chromatography-mass spectrometry methods: part II.

scientific article published on 13 February 2015

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