Miniaturisation of solid phase extraction method for determination of retinol, alpha- and gamma-tocopherol in human serum using new technologies

Lenka Krcmova, Dagmar Solichova, Jiri Plisek, Marketa Kasparova, Lubos Sobotka and Petr Solich

International Journal of Environmental Analytical Chemistry 90 ( 2 ): 106 - 114 , 2010