ACTA CHROMATOGRAPHICA, NO. 14, 2004

     CONTENTS

     ORIGINAL RESEARCH PAPERS

• Densitometric acquisition of concentration profiles in planar chromatography and its possible shortcomings.
  Part 1. 4-Phenylbutyric acid as analyte
        M. Sajewicz, A. Pieniak, R Piętka, K. Kaczmarski, and T. Kowalska (ACROBAT)

• A densitometric study of co-elution in thin-layer chromatography, and its physicochemical modeling
        A. Pieniak, K. Kaczmarski, M. Sajewicz, W. Zapała, A. Gołębiowska, R. Tomala, and T. Kowalska (ACROBAT)

• Determination of rate constants and activation energies for emission of organic compounds from polyoxymethylene
        M. Choczyński, J. M. Nęcki, and A. Juszkiewicz (ACROBAT)

• Problems with the gelling of emulsified colloidal silica
        S. S. Hayrapetyan and H. G. Khachatryan (ACROBAT)

• Quantification of arginine in dietary supplement tablets and capsules by silica gel high-performance thin-layer chromatography with visible mode densitometry
        B. Hess and J. Sherma (ACROBAT)

• Thin-layer chromatographic analysis of hydrophilic vitamins in standards and from Helisoma trivolvis snails
        E. L. Ponder, B. Fried, and J. Sherma (ACROBAT)

• Some possibilities of thin layer chromatographic analysis of the molecular phase of Baltic amber and other natural resins
        A. Matuszewska and A. John (ACROBAT)

• Selective separation and determination of cephalosporins by TLC on stannic oxide layers
        S. A. Nabi, E. Laiq, and A. Islam (ACROBAT)

• Chromatographic behaviour of antibiotics on thin layers of an inorganic ion-exchanger
        S. W. Husain, V Ghoulipour, and H. Sepahrian (ACROBAT)

• A rapid TLC method for analysis of external flavonoid aglycones in plant exudates
        M. Nikolova, S. Berkov, and S. Ivancheva (ACROBAT)

• Organic compounds formed in thermally treated high-protein food.
  Part I: Polycyclic aromatic hydrocarbons
        B. Janoszka, L. Warzecha, U. Błaszczyk, and D. Bodzek (ACROBAT)

• Organic compounds formed in thermally treated high-protein food.
  Part II: Azaarenes
        B. Janoszka, L. Warzecha, U. Błaszczyk, and D. Bodzek (ACROBAT)

• Determination of catecholamines and the total antioxidant potential of blood plasma by use of an improved RPHPLC-ED assay
        B. K. Głód, K. I. Stańczak, A. Woźniak, and W. Pakszys (ACROBAT)

• Development and validation of an HPLC method with post-column derivatisation to assay n-acetylcysteine in plasma
        Y. Vander Heyden, D. Mangelings, J. Van Brempt, and H. Spapen (ACROBAT)

• HPLC separation of porphine, selected porphyrins, and their metal derivatives
        M. Stefaniak (ACROBAT)

• Micellar liquid chromatographic determination of aluminum as its complex with 8-hydroxyquinoline-5-sulfonic acid
        N. Memon and M. I. Bhanger (ACROBAT)

• Fast and efficient purification of synthetic peptides by solid-phase extraction
        W. Kamysz, M. Okrój, E. Łempicka, T. Ossowski, and J. Łukasiak (ACROBAT)

• Preparation, characterization, and metal-sorption studies of a mordant yellow 10-loaded wool, a new stable chelating material based on bleached wool
        L. Vladescu, M. Costache, and I. Badea (ACROBAT)

• Separation and preconcentration of trace amounts of cadmium(II) and mercury(II) ions on rosaniline-grafted polyurethane foam
        E. A. Moawed (ACROBAT)

• Some aspects of the use of PY-GC-MS to investigate the composition of the aromatic fraction of hard coal pyrolysates
        A. Matuszewska (ACROBAT)

• Evaluation of an SPME and GC-MS method for analysis of fluazifop in water
        E. Olszewska (ACROBAT)

     SHORT COMMUNICATIONS

• Gas-liquid chromatographic analysis of the neutral fraction obtained from elder
        E. Olszewska, W. Kroszczyński, and B. Łopuszyńska (ACROBAT)

     NOTE TO AUTHORS