# liquid chromatography column - Scott R.P.W.

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effective, cell volume, heat of adsorption detector. 79 plates, 63 equation for, 64

relation to equilibrium plates. 65 efficiency, column, 45 equation for. 46. 47 particle diameter for a packed column. 119

radius for an open tube column. 132 elective variables in column design. 181 elution curve equation, 19, 21 derivation. 16 finite charge. 39 Gaussian form, 50 equation for. 52 solution of differential form. 19 gradient. 213

pronie, of iow aspect ratio tube, i65 environment, column, 8 equation. d'Arcy's. fluid flow through a packed bed. 116 design for optimized packed column, 206

efficiency required to effect a given separation, 62 elution curve. 19. 21 derivation, 16 Gaussian form, 50 equation of, 52 finite charge, 39. 40 Giddings. dispersion in a packed column, 123 Golay, for dispersion on open tubes, 128

heat of adsorption detector. 83 with on column detection. 87 Huber, for dispersion in a packed column. 124 Horvath and Lin, for dispersion in a packed column, 128 Knox, for dispersion in a packed column. 126 mass sensitivity. 172 Poiseuille’s, fluid flow through a tube. 132

Van Deemter, 109 detailed, 110 equilibrium, radial, column, 100 extra column dispersion. 6, 95, 153 effect on column radius, 167

factors that control retention and selectivity. 4 finite charge, elution curve of, 39 flow rate, definition. 10 for optimized open tube column. 224 equation for. 224 for optimized packed column. 199 equation for. 199 for optimized preparative column. 247 equation for. 247 frits, column, contribution to dispersion.

164

Giddings. equation for dispersion in a packed column. 123 Golay, equation for dispersion in open tubes. 128 gradient elution, 212

heat of adsorption detector, equation of output. 84

equation for on-column detection. 87 theory. 77 height, peak, definition. 11

HETP, curve, for open tubes, 129 for packed columns. 111 van Dccmter. 138 definition of. 97

equation, for an open tube column. 128 fora packed column. 110 for an open tube, uncoated. 129 minimum, dependance on diffusivitv.

145

packed column. 115 open tube column. 131, 217 Horvath and Lin. equation for dispersion in a packed column. 128 Huber, equation for dispersion in a packed column. 124

induced dipoles, 5 inflexion points, of elution curve, 48 equation for. 49 injection point, definition, Ó instrument constraints, in column design. 179

interstitial volume, definition of. and expression for. 29 effect of ion volume of marker, 34 static. 29 moving. 29 ion volume, effect on interstitial volume. 34

ionic interactions. 4 isotherms, adsorptions. 43 effect on peak shape. 44

kinetic dead volume. 31 Knox, equation for dispersion in a packed column. 126

length, column, approximate for packed, 117

optimum, for open tube, 221 equation for, 221 optimum, for packed. 192 equation for. 192 optimum for preparative. 241 equation for. 241 versus particle diameter, maximum efficiency. 12(1 versus radius for maximum efficiency. 132

line, base, 10 list of symbols. 265

longitudinal diffusion, and diffusivity.

143

packed column. 103 equation for, 104 low aspect ratio tube, elution profile of,

165

dispersion connecting tubes. 158 coiled tubes. 159 serpentine tubes, 161 detector cell design, 166

mass sensitivity, 172 overload. 261 maximum, efficiency, length and particle diameter. 120 extia column dispersion, open tube column. 226 equation for, 228 peak, definition. 11 sample volume. 53 equation for, 54

optimized open tube, column. 226 equation for, 228 optimized packed, column. 204 equation for, 204 minimum, analysis time, optimized column, 194

equation for. 195 HETP. packed column. 115 relation to diffusivity. 146 open tube column, 217. 131 solvent consumption, for optimized packed column, 201 mobile phase. 4 volume of. expression for. 29 molecular interactions. 4

size, effect on retention volume, 36 moving phase, definition. 29 multipath dispersion. 102 equation for, 103 and solute diffusivity. 141. 142

nomenclature, chromatography. 9

open tubular columns, 128 limitations. 233 optimum design, 215 optimum length. 221 equation for. 221 optimum radius. 218 equation for, 219

operating conditions for optimum column, in column design. 182 optimum, column, capacity ratio, packed.204 flow rate, open tube. 224 equation for, 225 packed. 199 equation for. 199 preparative. 247 equation for. 247 length, open tube, 221 equation for, 221 packed.192 equation for. 192 preparative. 241 equation for, 241 particle diameter, packed. 188 equation for, 189 preparative. 239 equation for. 239 peak capacity, packed. 202 equation for. 202 radius, open tubular. 218 equation for. 219 packed,196

equation for, 198 preparative, 244 equation for. 246 velocity, open tube column. 130, 217 packed column. 113 approximate, 114 relation to diffusivity, 146 overload, column, 259 mass. 261 volume. 259

packing, factors, 103. 104. 112 quality of. 127 particle diameter, effect on analysis time, 121

minimum, versus particle diameter.

171

optimum, for packed column, 188 equation for, 189 for preparative column, 239 equation for. 239 versus efficiency for a packed column, 119

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