Personal Home Page

http://www.uni-muenster.de/Chemie.ac/karst/karst.html

Articles in Scholarly Journals [Incomplete List]

1. Differential Labeling of Free and Disulfide-Bound Thiol Functions in Proteins
   Journal of the American Society for Mass Spectrometry, vol. 19, no. 1, pp. 1–7, 2008
2. Wavelength-resolved fluorescence detector for microchip capillary electrophoresis separations
   Sensors and Actuators B: Chemical, vol. 123, no. 1, pp. 622–627, 2007
3. Quantitative analysis of thiols in consumer products on a microfluidic CE chip with fluorescence detection
   ELECTROPHORESIS, vol. 28, no. 7, pp. 1154–1160, 2007
4. Analysis of cysteine-containing proteins using precolumn derivatization with N-(2-ferroceneethyl)maleimide and liquid chromatography/electrochemistry/mass spectrometry
   Analytical and Bioanalytical Chemistry, vol. 388, no. 8, pp. 1633–1642, 2007
5. Characterization of the chemical composition of a block copolymer by liquid chromatography/mass spectrometry using atmospheric pressure chemical ionization and electrospray ionization
   Rapid Communications in Mass Spectrometry, vol. 21, no. 16, pp. 2629–2637, 2007
6. Simultaneous LC/MS/MS Determination of Thiols and Disulfides in Urine Samples Based on Differential Labeling with Ferrocene-Based Maleimides
   Analytical Chemistry, vol. 79, no. 18, pp. 7131–7138, 2007
7. Generation and Identification of Reactive Metabolites by Electrochemistry and Immobilized Enzymes Coupled On-Line to Liquid Chromatography/Mass Spectrometry
   Analytical Chemistry, vol. 79, no. 17, pp. 6831–6839, 2007
8. Analytical Chemistry, vol. 78, no. 18, pp. 6547–6555, 2006
9. Analytical Chemistry, vol. 78, no. 23, pp. 8150–8155, 2006
10. Effects of humidity and filter material on diffusive sampling of isocyanates using reagent-coated filters
    Journal of Environmental Monitoring, vol. 8, no. 10, p. 1014, 2006
11. Quantitative on-chip determination of taurine in energy and sports drinks
    Lab on a Chip, vol. 7, no. 1, p. 93, 2006
12. Recent methods for the determination of peroxide-based explosives
    Analytical and Bioanalytical Chemistry, vol. 386, no. 3, pp. 559–565, 2006
13. Simulation of the detoxification of paracetamol using on-line electrochemistry/liquid chromatography/mass spectrometry
    Analytical and Bioanalytical Chemistry, vol. 386, no. 6, pp. 1701–1708, 2006
14. Recent developments in optical detection methods for microchip separations
    Analytical and Bioanalytical Chemistry, vol. 387, no. 1, pp. 183–192, 2006
15. Determination of airborne isocyanates
    Analytical and Bioanalytical Chemistry, vol. 387, no. 1, pp. 219–236, 2006
16. Analysis of microperoxidases using liquid chromatography, post-column substrate conversion and fluorescence detection
    Journal of Chromatography B, vol. 830, no. 1, pp. 47–53, 2006
17. Determination of telmisartan in human blood plasmaPart II: Liquid chromatography-tandem mass spectrometry method development, comparison to immunoassay and pharmacokinetic study
    Analytica Chimica Acta, vol. 560, no. 1-2, pp. 41–49, 2006
18. Determination of telmisartan in human blood plasmaPart I: Immunoassay development
    Analytica Chimica Acta, vol. 560, no. 1-2, pp. 35–40, 2006
19. Validation of a diffusive sampling method for airborne low-molecular isocyanates using 4-nitro-7-piperazinobenzo-2-oxa-1,3-diazole-impregnated filters and liquid chromatography–tandem mass spectrometry
    Journal of Chromatography A, vol. 1134, no. 1-2, pp. 112–121, 2006
20. Fluorescence and mass spectrometric detection schemes for simultaneous enzymatic conversions: Method development and comparison
    Analytica Chimica Acta, vol. 543, no. 1-2, pp. 137–142, 2005
21. Bilayer Vesicles of Amphiphilic Cyclodextrins: Host Membranes That Recognize Guest Molecules
    Chemistry - A European Journal, vol. 11, no. 4, pp. 1171–1180, 2005
22. Turbulent flow chromatography for the reduction of matrix effects in electrospray ionization mass spectrometry-based enzyme assays
    Journal of Separation Science, vol. 28, no. 14, pp. 1658–1665, 2005
23. Screening for proteolytic activities in snake venom by means of a multiplexing electrospray ionization mass spectrometry assay scheme
    Rapid Communications in Mass Spectrometry, vol. 19, no. 20, pp. 2923–2928, 2005
24. From fundamentals to applications: recent developments in atmospheric pressure photoionization mass spectrometry
    Analytical and Bioanalytical Chemistry, vol. 384, no. 1, pp. 85–99, 2005
25. Where the worlds of nanotechnology, materials science, and bioanalysis converge
    Analytical and Bioanalytical Chemistry, vol. 384, no. 3, pp. 559–559, 2005
26. Prediction of clozapine metabolism by on-line electrochemistry/liquid chromatography/mass spectrometry
    Analytical and Bioanalytical Chemistry, vol. 382, no. 3, pp. 742–750, 2005
27. Liquid chromatographic/mass spectrometric investigation on the reaction products in the peroxidase-catalyzed oxidation of o-phenylenediamine by hydrogen peroxide
    Analytical and Bioanalytical Chemistry, vol. 382, no. 1, pp. 234–238, 2005
28. Monitoring enzymatic conversions by mass spectrometry: a critical review
    Analytical and Bioanalytical Chemistry, vol. 382, no. 7, pp. 1451–1464, 2005
29. Liquid chromatography–electron capture–atmospheric pressure chemical ionization-mass spectrometry
    Analytical and Bioanalytical Chemistry, vol. 382, no. 8, pp. 1744–1746, 2005
30. Labeling strategies for bioassays
    Analytical and Bioanalytical Chemistry, vol. 384, no. 3, pp. 572–583, 2005
31. Assessing protease activity pattern by means of multiple substrate ESI-MS assays
    The Analyst, vol. 130, no. 6, p. 850, 2005
32. Analytical Chemistry, vol. 77, no. 21, pp. 6852–6856, 2005
33. Analytical Chemistry, vol. 76, no. 4, pp. 1063–1068, 2004
34. Liquid chromatography?electrochemistry?mass spectrometry of polycyclic aromatic hydrocarbons
    Analytical and Bioanalytical Chemistry, vol. 378, no. 4, pp. 917–925, 2004
35. Reaction monitoring of enzyme-catalyzed ester cleavage by time-resolved fluorescence and electrospray mass spectrometry: method development and comparison
    Analytical and Bioanalytical Chemistry, vol. 378, no. 4, pp. 1124–1128, 2004
36. Liquid chromatography?mass spectrometry: reaching maturity rapidly
    Analytical and Bioanalytical Chemistry, vol. 378, no. 4, pp. 841–841, 2004
37. Detection strategies for bioassays based on luminescent lanthanide complexes and signal amplification
    Analytical and Bioanalytical Chemistry, vol. 380, no. 1, 2004
38. Electrochemistry/Mass Spectrometry (EC/MS)—A New Tool To Study Drug Metabolism and Reaction Mechanisms
    Angewandte Chemie International Edition, vol. 43, no. 19, pp. 2476–2478, 2004
39. Liquid Chromatography/Electrochemistry/Mass Spectrometry as Screening Technique for Alcohols and Phenols in Fuels
    Microchimica Acta, vol. 146, no. 2, pp. 137–147, 2004
40. Ferrocenoyl piperazide as derivatizing agent for the analysis of isocyanates and related compounds using liquid chromatography/electrochemistry/mass spectrometry (LC/EC/MS)
    Journal of the American Society for Mass Spectrometry, vol. 15, no. 12, pp. 1727–1736, 2004
41. A dual fluorophore system for simultaneous bioassays
    Analytica Chimica Acta, vol. 521, no. 2, pp. 117–122, 2004
42. Detection scheme for bioassays based on 2,6-pyridinedicarboxylic acid derivatives and enzyme-amplified lanthanide luminescence
    Analytica Chimica Acta, vol. 526, no. 1, pp. 27–34, 2004
43. Liquid chromatographic–mass spectrometric studies on the in vitro degradation of a poly(ether ester) block copolymer
    Journal of Chromatography A, vol. 1029, no. 1-2, pp. 29–36, 2004
44. Determination of aldehydes and ketones using derivatization with 2,4-dinitrophenylhydrazine and liquid chromatography?atmospheric pressure photoionization-mass spectrometry
    Journal of Chromatography A, vol. 1058, no. 1-2, pp. 107–112, 2004
45. In vivo and in vitro degradation of poly(ether ester) block copolymers based on poly(ethylene glycol) and poly(butylene terephthalate)
    Biomaterials, vol. 25, no. 2, pp. 247–258, 2004
46. Analytical Chemistry, vol. 75, no. 4, pp. 731–735, 2003
47. Analytical Chemistry, vol. 75, no. 4, pp. 922–926, 2003
48. Strategies for the liquid chromatographic–mass spectrometric analysis of non-polar compounds
    Journal of Chromatography A, vol. 1000, no. 1-2, pp. 549–565, 2003
49. Determination of triacetonetriperoxide in ambient air
    Analytica Chimica Acta, vol. 482, no. 2, pp. 183–188, 2003
50. Liquid chromatography—Post-column photochemical conversion and electrochemical detection for determination of peroxide-based explosives
    Chromatographia, vol. 57, no. S1, pp. S61–S65, 2003
51. Analytical Chemistry, vol. 75, no. 18, pp. 4833–4840, 2003
52. LC-electron capture-APCI(?)-MS determination of nitrobenzoxadiazole derivatives
    The Analyst, vol. 128, no. 11, p. 1365, 2003
53. LC-Electron capture APCI-MS for the determination of nitroaromatic compounds
    The Analyst, vol. 127, no. 8, pp. 1027–1030, 2002
54. A field test for the detection of peroxide-based explosives
    The Analyst, vol. 127, no. 9, pp. 1152–1154, 2002
55. Selective determination of hydrogen peroxide by adduct formation with a dinuclear iron(iii) complex and flow injection analysis/tandem mass spectrometry
    The Analyst, vol. 127, no. 11, pp. 1410–1412, 2002
56. Diffusive sampling of methyl isocyanate using 4-nitro-7-piperazinobenzo-2-oxa-1,3-diazole (NBDPZ) as derivatizing agent
    Journal of Environmental Monitoring, vol. 5, no. 1, pp. 100–105, 2002
57. A tripod ligand as new sensitiser for the enzyme amplified lanthanide luminescence determination of esterase
    The Analyst, vol. 128, no. 1, pp. 29–31, 2002
58. Detection techniques for liquid chromatography
    Analytical and Bioanalytical Chemistry, vol. 372, no. 1, pp. 27–28, 2002
59. Aldehydes 2001 - an unusual conference
    Analytical and Bioanalytical Chemistry, vol. 372, no. 5-6, pp. 605–605, 2002
60. On-line electrochemistry - MS and related techniques
    Analytical and Bioanalytical Chemistry, vol. 373, no. 6, pp. 390–398, 2002
61. Analytical Chemistry, vol. 74, no. 24, pp. 6418–6426, 2002
62. Fast liquid chromatography–electrochemistry–mass spectrometry of ferrocenecarboxylic acid esters
    Journal of Chromatography A, vol. 974, no. 1-2, pp. 103–109, 2002
63. Characterization of chemical interferences in the determination of unsaturated aldehydes using aromatic hydrazine reagents and liquid chromatography
    Journal of Environmental Monitoring, vol. 3, no. 3, pp. 306–310, 2001
64. Determination of carbonyl compounds in waters using triazine-based hydrazine reagents and liquid chromatography
    The Analyst, vol. 125, no. 3, pp. 433–438, 2000
65. Peroxidase enhanced lanthanide luminescence—a new technique for the evaluation of bioassays
    The Analyst, vol. 125, no. 9, pp. 1537–1538, 2000
66. 2,4-Dinitro-3,5,6-trideuterophenylhydrazones for the quantitation of aldehydes and ketones in air samples by liquid chromatography–mass spectrometry
    Journal of Chromatography A, vol. 869, no. 1-2, pp. 251–259, 2000
67. Characterization of a chemical artifact in the liquid chromatographic determination of 3-butyn-2-one using the 2,4-dinitrophenylhydrazine method
    Journal of Chromatography A, vol. 886, no. 1-2, pp. 303–307, 2000
68. Post-column oxidative derivatization for the liquid chromatographic determination of phenothiazines
    Journal of Chromatography A, vol. 890, no. 2, pp. 281–287, 2000
69. Tailor-made derivatizing agents for carbonyl compounds using liquid chromatography
    Analytica Chimica Acta, vol. 410, no. 1-2, pp. 47–64, 2000
70. 4-(N-Methylhydrazino)-7-nitro-2,1,3-benzooxadiazole (MNBDH): A Novel Fluorogenic Peroxidase Substrate
    Angewandte Chemie International Edition, vol. 39, no. 8, pp. 1453–1455, 2000
71. Hydrazine reagents as derivatizing agents in environmental analysis - a critical review
    Fresenius' Journal of Analytical Chemistry, vol. 366, no. 8, pp. 781–791, 2000
72. Spectrophotometric and direct-reading methods for the analysis of gas phase peroxyacetic acid
    Fresenius' Journal of Analytical Chemistry, vol. 366, no. 4, pp. 361–364, 2000
73. Determination of acetaldehyde in tobacco smoke using N-methyl-4-hydrazino-7-nitrobenzofurazan and liquid chromatography/mass spectrometry
    Fresenius' Journal of Analytical Chemistry, vol. 366, no. 4, pp. 396–399, 2000
74. Flow injection analysis of hydrogen peroxide in disinfectants
    Fresenius' Journal of Analytical Chemistry, vol. 364, no. 1-2, pp. 184–188, 1999
75. Workplace monitoring of oximes using 2,4-dinitrophenylhydrazine-coated silica gel cartridges and liquid chromatography
    Analytica Chimica Acta, vol. 388, no. 1-2, pp. 181–186, 1999
76. Rapid and selective determination of peroxyacetic acid in disinfectants using flow injection analysis
    Analytica Chimica Acta, vol. 389, no. 1-3, pp. 233–238, 1999
77. Workplace monitoring of gas phase hydrogen peroxide by means of fluorescence spectroscopy
    Analytica Chimica Acta, vol. 401, no. 1-2, pp. 191–196, 1999
78. Determination of glucose in soft drinks using its enzymatic oxidation and the detection of formed hydrogen peroxide with a dinuclear iron(III) complex
    Analytica Chimica Acta, vol. 401, no. 1-2, pp. 83–90, 1999
79. Determination of gas phase peroxyacetic acid using pre-column derivatization with organic sulfide reagents and liquid chromatography
    Journal of Chromatography A, vol. 855, no. 2, pp. 551–561, 1999
80. Liquid chromatography–mass spectrometry method for the determination of aldehydes derivatized by the Hantzsch reaction
    Journal of Chromatography A, vol. 864, no. 2, pp. 191–197, 1999
81. A diffusive sampling device for the determination of formaldehyde in air using N-methyl-4-hydrazino-7-nitrobenzofurazan (MNBDH) as reagent
    Journal of Environmental Monitoring, vol. 1, no. 1, pp. 39–43, 1999
82. Determination of carbonyls using liquid chromatography-mass spectrometry with atmospheric pressure chemical ionization
    Journal of Environmental Monitoring, vol. 1, no. 4, pp. 307–311, 1999
83. HPLC-APCI-MS with calibration based on stable isotope-labelled internal standards for the quantification of carbonyls in air samples
    The Analyst, vol. 124, no. 9, pp. 1291–1295, 1999
84. Analytical Chemistry, vol. 71, no. 9, pp. 1893–1898, 1999
85. Formation of Aqueous Small Droplet Aerosols Assisted by Supercritical Carbon Dioxide
    Aerosol Science and Technology, vol. 30, no. 1, pp. 3–15, 1999
86. Reagent for the high-performance liquid chromatography determination of peroxycarboxylic acids
    The Analyst, vol. 123, no. 8, pp. 1761–1765, 1998
87. Peroxide analysis in laundry detergents using liquid chromatography
    Analytica Chimica Acta, vol. 363, no. 1, pp. 97–103, 1998
88. Microplate photometric determination of aldehydes in disinfectant solutions
    Analytica Chimica Acta, vol. 351, no. 1-3, pp. 247–257, 1997
89. Non-porous silica for ultrafast reversed-phase high-performance liquid chromatographic separation of aldehyde and ketone 2,4-dinitrophenylhydrazones
    Journal of Chromatography A, vol. 786, no. 1, pp. 47–55, 1997
90. Selective Photometric Determination of Peroxycarboxylic Acids in the Presence of Hydrogen Peroxide
    The Analyst, vol. 122, no. 6, pp. 567–571, 1997
91. Analytical Chemistry, vol. 69, no. 17, pp. 3617–3622, 1997
92. Analytical Chemistry, vol. 69, no. 17, pp. 3623–3627, 1997
93. Analytical Chemistry, vol. 68, no. 19, pp. 3354–3358, 1996
94. Supercritical CO2-assisted nebulization for the production and administration of drugs
    Journal of Aerosol Science, vol. 27, pp. S497–S498, 1996
95. Rapid high-performance liquid chromatographic method for the determination of peroxyacetic acid
    Journal of Chromatography A, vol. 730, no. 1-2, pp. 203–208, 1996
96. Development of a semi-continuous method for the measurement of nitric acid vapor and particulate nitrate and sulfate
    Atmospheric Environment, vol. 29, no. 19, pp. 2609–2624, 1995
97. Determination of Peroxyacetic Acid Using High-Performance Liquid Chromatography with External Calibration
    Analytical Chemistry, vol. 66, no. 15, pp. 2599–2602, 1994
98. Development of a method for simultaneous determinations of nitrogen oxides, aldehydes and ketones in air samples
    Journal of Chromatography A, vol. 653, no. 2, pp. 341–347, 1993
99. Interferences of nitrogen dioxide in the determination of aldehydes and ketones by sampling on 2,4-dinitrophenylhydrazine-coated solid sorbent
    Fresenius' Journal of Analytical Chemistry, vol. 345, no. 1, pp. 48–52, 1993