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:

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      100 005
      Use of Thin-Layer and Over-Pressured-Layer Chromatography to study the hydrophobicity of homologous s-triazines
      Malgorzata JANICKA (Faculty of Chemistry, Department of Physical Chemistry, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland; mjanicka@hermes.umcs.lublin.pl)

      J. Planar Chromatogr. 20, 267-274 (2007). Comparison of retention factors in pure water, log kw, determined by linear extrapolation and by a numerical method based on Oscik’s equation, and calculated values of log P as hydrophobicity indices for nine homologues s-triazines. The effect of mobile phase pH on solute retention was investigated as well as the effect of mobile and stationary phase properties on chromatographic behavior; 3 different organic modifiers (dioxane, acetonitrile, and tetrahydrofuran) and two stationary phases (RP-8 and RP-18) were used. Correlations of calculated log P values and log kw with carbon number confirm the usefulness of chromatographic techniques for studying the hydrophobicity of organic compounds. TLC on RP-18 with buffer - methanol mixtures in saturated sandwich chambers. Detection under UV light at 254 nm.

      Classification: 2d
      119 011
      Linear modeling of the soil-water partition coefficient normalized to organic carbon content by reversed-phase thin-layer chromatography
      F. ANDRI?*, Sandra ŠEGAN, Aleksandra DRAMI?ANIN, Helena MAJSTOROVI?, Dusanka MILOJKOVI?-OPSENICA (*Fac. of Chem., Univ. of Belgrade, Studentski trg 12-16, P.O. Box 51, 11158 Belgrade, Serbia)

      J. Chromatogr. A 1458, 136–144, (2016). The soil-water partition coefficient normalized to the organic carbon content (KOC) influences the fate of organic compounds in the environment. This paper proposes a RP-TLC method for KOC determination as a simpler, yet equally accurate method as the official HPLC method. TLC on different systems, including RP-18 and cyano phases developed with methanol – water and acetonitrile – water mixtures. 50 different compounds such as phenols, benzodiazepines, triazine herbicides, and polyaromatic hydrocarbons were selected. A calibration set of 29 compounds with known logKOC values was used to build simple univariate calibrations, Principal Component Regression (PCR) and Partial Least Squares (PLS) models between logKOC and TLC retention parameters. The models exhibit good statistical performance and indicate that the cyano phase contributes better to logKOC modeling than the RP-18 phase. Comparison of the proposed TLC methods, the official HPLC method, and four in silico estimation approaches by using the non-parametric Sum of Ranking Differences(SRD) approach. The best estimations of logKOC values were achieved by simple univariate calibration of TLC retention data from cyano phase developed with 40–50 % methanol. In a Linear Solvation Energy Relationship study it was found that the more polar cyano phase in combination with methanol – water mixtures is the key to better modeling of logKOC through significant diminishing of dipolar and proton accepting influence of the mobile phase as well as enhancing molar refractivity in excess of the chromatographic systems.

      Keywords:
      Classification: 2d, 5b
      64 044
      Flavonoid biocides
      P.E. LAKS, M.S. PRUNER, (Inst. of Wood Research, Michigan Techn. Univ., Houghton, MI 49931, USA)

      Flavonoid biocides structure/activity relations of flavonoid phytoalexin analogues. Phytochemistry 28, 87-981 (1989). TLC of pisatin and maackiain on silica with chloroform - methanol 41. Detection with vanillin - HCl reagent. Determination of RM TLC on RP-18 254 plates activated by heating at 120°C for 15 min. with acetonitrile - water 137. Visualization under UV and by exposing to iodine vapor.

      Classification: 8a, 2d
      68 020
      Determination of the lipophilicity of arylsulfonylalkanoic and arylsulfonylcycloalkane carboxylic acids by thin-layer chromatography
      J. POLANSKI, A. RATAJCZAK, (Dep. Org. Chem., Silesian Univ., 40-006 Katowice, Poland)

      J. Chromatogr. 543, 195-2000 (1991). Measurement of the RM values of arylsulfonylalkanoic and arylsulfonylcycloalkane carboxylic acids by TLC on polyamide. Analysis of the RM vs. Rekker hydrophobicity relation. Excellent correlations, esp. within strictly congeneric sub-series, were established.

      Keywords:
      Classification: 2d
      73 013
      A new definition of the Rf coefficient
      T. KOWALSKA, B. WITKOWSKA-KITA, A. PODGORNY, (Inst. Chem., Silesian Univ., 9, Szkolna Street, PL-40006 Katowice, Poland)

      Acta Chromatographica 1, 81-90 (1992). Introduction of a new thermodynamic definition of the Rf coefficient and furnish of empirical evidence to support it. Concept is the mental division of the multicomponent mobile phases into the individual liquid moieties. Practical example Solute methyl undecyl ketone; stationary phases RP-2, RP-8, RP-18; mobile phases methanol water, binary mixtures in varying proportions.

      Keywords:
      Classification: 2d
      79 004
      Solute effects on reversed-phase thin-layer chromatography
      M.H. ABRAHAM*, C.F. POOLE, S.K. POOLE, (*Dept. Chem., Univ. Coll. London, 20 Gordon Street, London WCIH OAJ, UK)

      A linear free energy relationship analysis. J. Chromatogr. A 749, 201-209 (1996). Presentation of a linear free energy relationship to analyze the RMw values determined on RP-18 silica with aqueous methanol mobile phases and give a equation, involving the solute descriptors such as excess molar refraction, dipolarity/polarizability overall or effective hydrogen-bond acidity and basicity, and McGowan characteristic volume etc. Comparison of the coefficients in the equation with those for the correlation of water - octanol partition coefficients. Discussion of the limitation of the equation in its application.

      Keywords:
      Classification: 2d
      85 003
      Relationship between the reversed-phase retention of monotetrazolium and ditetrazolium salts and their physicochemical properties
      T. CSERHATI*, E. FORGACS, S. BALOGH, (*Inst. for Chem., Chem. Res. Cent., Hung. Acad. of Sci., P.O. Box 17, H-1525 Budapest, Hungary)

      J. Planar Chromatogr. 12, 446-451 (1999). Determination of the lipophilicity and the specific hydrophobic surface area of seven monotetrazolium and nine ditetrazolium salts by RP TLC with ethanol, THF and dioxane as organic modifiers. The nature of the organic modifier significantly influenced the specific hydrophobic surface area. TLC of tetrazolium salts on alumina, also on alumina impregnated by overnight predevelopment in n-hexane - paraffin oil 191. After drying visualization under UV and under visible light.

      Keywords:
      Classification: 2d
      92 002
      OPLC and TLC in the prediction of retention factors of solutes in pure water
      M. JANICKA*, J.K. ROZYLO, (*Fac. of Chem., Maria Curie-Sklodowska Univ., Maria Sklodowska Sq. 3, 20-031 Lublin, Poland)

      Proc. Intern. Symp. on Planar Separations Plan. Chrom. 13-23 (2003). TLC of newly synthesized benzanilides, benzamide and a group of pesticides on RP-18 with aqueous solutions of acetonitrile or methanol with different organic modifier concentrations. Visualization under UV 254 or 366 nm.

      Keywords:
      Classification: 2d, 17, 29