Solid phase derivatization approaches for improved detection in high performance liquid chromatography (HPLC) : I.S. Krull, S.T. Colgan, T.-Y. Chou and C.-X. Gao, Department of Chemistry and The Barnett Institute, Northeastern University. Boston, MA, U.S.A. and C. Dorschell and B. Bidlingmeyer, Waters Chromatography Division, Millipore Corporation, Milford, MA, U.S.A.