%A"Gasco Sanchez, L" %D1973 %I; Junta de Energia Nuclear (JEN), Madrid (Spain) %2 %J[] %K37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY, OPTIMIZATION, GAS ANALYSIS, CHROMATOGRAPHY, SEPARATION PROCESSES, EQUATIONS %PMedium: ED; Size: 42 pages %TOptimization of the gas chromatographic separations; Optimacion de las separaciones cromatograficas en fase gaseosa %XA review and a critical study on the optimization of the gas chromatographic separations are made. After dealing with the fundamental gas chromatographic equations, some methods of expressing column performances are discussed: performance indices, performance parameters, resolution and effective plate number per unit time. This is completed with a comparative study on performances of various types of columns. Moreover, optimization methods for operating chromatographic conditions are extensively dealt with: as resolution optimization, separation time, and normalization techniques for the time of analysis in order to achieve the maximum resolution at constant time. Finally, some others non operating parameters such as: selectivity of stationary phases, column preparation and optimization methods by means of computers are studied. (Author) 68 refs. %0Technical Report %NJEN-263;TRN: ES08B0340 %1 %CSpain %Rhttps://doi.org/ TRN: ES08B0340 SPN %GSpanish