Cumulative CAMAG Bibliography Service CCBS

Our CCBS database includes more than 11,000 abstracts of publications. Perform your own detailed search of TLC/HPTLC literature and find relevant information.

The Cumulative CAMAG Bibliography Service CCBS contains all abstracts of CBS issues beginning with CBS 51. The database is updated after the publication of every other CBS edition. Currently the Cumulative CAMAG Bibliography Service includes more than 11'000 abstracts of publications between 1983 and today. With the online version you can perform your own detailed TLC/HPTLC literature search:

  • Full text search: Enter a keyword, e.g. an author's name, a substance, a technique, a reagent or a term and see all related publications
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      130 004
      Identification of acetylcholinesterase inhibitors in water by combining two-dimensional thin-layer chromatography and high-resolution mass spectrometry
      Lena STÜTZ*, W. SCHULZ, R. WINZENBACHER (*Laboratory for Operation Control and Research, Zweckverband Landeswasserversorgung, Langenau, Germany;

      J Chromatogr A, 1624, 461239 (2020). Samples were chemical standards of acetylcholinesterase (AChE) inhibitors (azamethiphos, caffeine, donepezil, galanthamine, methiocarb-sulfoxide, paraoxon-ethyl) and of neurotoxic compounds, as well as drinking or contaminated water samples enriched through solid phase extraction. HPTLC on spherical silica gel (pre-washed twice by 20 min immersion in isopropanol, heated 20 min at 120 °C before and after pre-washing with acetonitrile). First separation (preparative TLC) with automated multiple development (16 steps). Effect-directed analysis for AChE inhibitors by immersion (speed 5 cm/s, time 1 s) into enzyme solution, incubation 5 min at 37 °C and immersion into substrate solution (indoxyl acetate 2 % in methanol); visualization under UV 366 nm. Active zones from untreated layers were eluted through the oval head of a TLC-MS interface to a second plate for a second separation with a panel of other mobile phases. Bands of interest were eluted from the second layer with water through the oval elution head of the TLC-MS interface pump, into a RP18 liquid chromatography guard column, followed by a quadrupole time-of-flight mass spectrometer. Full scan mass spectra (m/z 100–1200) were recorded in negative and positive modes using electrospray ionization (and collision-induced dissociation for MS2). Among the water contaminants, lumichrome (riboflavin photolysis product), paraxanthine and linear alkylbenzene sulfonates were identified as AChE inhibitors.

      Classification: 3d, 4d, 4e, 22, 29b, 35d, 37c
      65 144
      Adsorption chromatography on cellulose V
      M. LEDERER*, M. SCHUDEL, (*Inst. Police Sci. Criminol., Univ. Lausanne, Place du Château 3, CH-1005 Lausanne, Switzerland)

      A simple chromatographic system for the identification of inks. J. Chromatogr. 475, 451-456 (1989). Proposal of a simple TLC system for the identification of inks based on cellulose layer, solution of ammonium sulfate or 1% sodium chloride as developing solvent; UV detection and photo dokumentation.

      Classification: 30a, 35d
      88 185
      (Separation of sulfonated products by thin-layer chromatography
      H. DONG (Dong Huiru)*, J. ZHANG (Zhang Jingchang), J. ZHANG (Zhang Jianjun), H. JIN (Jin Hua), (*Dept. Appl. Chem., Beijing Univ. Chem. Eng., Beijing 100029, P.R. China)

      Chinese Anal. Chem. (Fenxi Huaxue) 29 (9), 1109-1110 (2001). TLC on silica gel with 1) isopropanol - ethanol - NH3 2:2:1, 2) propanol - ethanol - NH3 2:2:1, 3) isopropanol - ethanol -water 1:1:1, and 4) propanol ethanol - water 1:1:1. Detection under UV 254 nm. Identification by finger print technique.

      Classification: 35d
      65 185
      Separation of natural product sweetening agents using overpressured layer Chromatography
      F. FULLAS, J. KIM, C.M. COMPADRE, A.D. KINGHORN*, (*Prog. Collab. Res. Pharm. Sci. and Dep. Med. Chem. & Pharmacog., Coll. Pharm., Univ. Illinois at Chicago, Chicago, IL 60612, USA)

      J. Chromatogr. 464, 213-219 (1989). Analytical OPLC of polypodoside A, B and C on silica with ethyl acetate - ethanol - water 130:27:20, chloroform - methanol - water 6:3:1 and the lower layer of hexane - chloroform - methanol - water 0.8:6:3:1. Detection by spraying with 60% sulfuric acid and heating at 110°C for 10 min.; densitometry. Also preparative OPLC.

      Classification: 3d, 35d
      94 110
      Some possibility of Thin-layer chromatographic analysis of Baltic amber and other natural resins
      A. MATUSZEWSKA*, A. JOHN (*Dep. Geochem., Mineralogy, and Petrography, Fac. Earth Sci., Silesian Univ., 60 Bedzinska Str., 41-200 Sosnowiec, Poland)

      Acta Chromatographica 14, 82-91 (2004). Comparative investigation of the group composition of ethanol extracts obtained from natural resins of different origin and geological age by TLC on silica gel with dichloromethane - methanol 10:1 for carboxylic acids and a-hydroxy and a-keto acids, and with hexane - benzene - methanol 2:6:1 for other compounds. Detection with phosphoric and sulfuric acid and under UV 254 nm for additional identification of unsaturated compounds. Discussion of the potential of using the characteristics of the chromatograms as an auxiliary tool for classification of natural resins and, especially important, fossil resins.

      Classification: 35d
      67 236
      TLC-scanning for direct quantitation of natural waxes
      R. MARTINEZ, P. MOYNA, (Farmacognosia y Productos Naturales, Facultad de Quimica, Av. Gral. Glores 2124, Montevideo, Urugay)

      J. Liquid Chromatogr. 13, 1959-1965 (1990). TLC of natural waxes on silica with a solvent mixture. Detection by charring with sulfuric acid - water 1:1, and heating at 200 °C Investigation of the influence of heating time and amount of charring agent.

      Classification: 35d
      96 161
      Thin-layer chromatography of pitch and a petroleum vacuum residue
      W. LI, T.J. MORGAN, A. A. HEROD*, R. KANDIYOTI (*Department of Chemical Engineering and Chemical Technology, South Kensington Campus, Imperial College London, London SW7 2AZ, United Kingdom)

      Relation between mobility and molecular size shown by size-exclusion chromatography. J. Chromatogr. A 1024 (1-2), 227-243 (2004). TLC of coal tar pitch and a petroleum vacuum residue with pyridine, acetonitrile, toluene and pentane. The bands of material detected were recovered in 1-methyl-2-pyrrolidinone (NMP) solvent and examined by size-exclusion chromatography (SEC) in NMP eluent. The relation between elution time in SEC and mobility on the TLC plate indicated that molecular size increased steadily with increasing immobility on the plate. This relation was reinforced by UV fluorescence spectroscopy in that the fluorescence moved to longer wavelengths with increasing immobility. The molecular size of the material excluded from the porosity of the SEC column remains undefined; some excluded material was found in all of the fractions from both samples. The valley of zero intensity separating the retained material from the excluded material may suggest a change of structure from near-planar in the retained region to three-dimensional in the excluded region.

      Classification: 2a, 35d
      70 205
      Quantitative analysis of bitumen by conventional high-performance thin-layer chromatography
      C.M. MARSH*, C.J. HLEKANE, (*Abecol (PTY) Ltd., P.O. Box 79, Isnado 1600, South Africa)

      J. Planar Chromatogr. 4, 293-298 (1991). HPTLC of bitumen (aliphatic compounds, aromatics, resins, and asphaltenes) on silica with heptane; further successive elution with dichloromethane and THF resp. Quantification of aromatics by densitometry (absorbance) at 254 nm; for asphaltenes and the saturates by immersion in a solution of berberine sulfate and densitometry (fluorescence) at 264 nm.

      Classification: 35d