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1、美国药典（USP）中规定的色谱柱类型ChromatographicReagentsThefollowinglistofpackings(L),phases(G),andsupports(S)isintendedtobeaconvenientreferenceforthechromatographer.[note—Particlesizesgiveninthislistingarethosegenerallyprovided.Whereother,usuallyfiner,sizesarerequired,theindividualmonographspecifiesthe
2、desiredparticlesize.Withinanycategoryofpackingsorphaseslistedbelow,theremaybeawiderangeofcolumnsavailable.Whereitisnecessarytodefinemorespecificallythechromatographicconditions,theindividualmonographsoindicates.]Changetoread:PackingsL1—Octadecylsilanechemicallybondedtoporoussilicaorcerami
3、cmicro-particles,1.5to10µmindiameter,oramonolithicsilicarod.L2—Octadecylsilanechemicallybondedtosilicagelofacontrolledsurfaceporositythathasbeenbondedtoasolidsphericalcore,30to50µmindiameter.L3—Poroussilicaparticles,3USP31to10µmindiameter,oramonolithicsilicarod.USP31L4—S
4、ilicagelofcontrolledsurfaceporositybondedtoasolidsphericalcore,30to50µmindiameter.L5—Aluminaofcontrolledsurfaceporositybondedtoasolidsphericalcore,30to50µmindiameter.L6—Strongcation-exchangepacking–sulfonatedfluorocarbonpolymercoatedonasolidsphericalcore,30to50µmindiamet
5、er.L7—Octylsilanechemicallybondedtototallyporoussilicaparticles,1.5to10µmindiameter,oramonolithicsilicarod.USP31L8—Anessentiallymonomolecularlayerofaminopropylsilanechemicallybondedtototallyporoussilicagelsupport,3to10µmindiameter.L9—Irregularorspherical,totallyporoussilicagel
6、havingachemicallybonded,stronglyacidiccation-exchangecoating,3to10µmindiameter.L10—Nitrilegroupschemicallybondedtoporoussilicaparticles,3to10µmindiameter.L11—Phenylgroupschemicallybondedtoporoussilicaparticles,1.5to10µmindiameter.L12—Astronganion-exchangepackingmadebyche
7、micallybondingaquaternaryaminetoasolidsilicasphericalcore,30to50µmindiameter.L13—Trimethylsilanechemicallybondedtoporoussilicaparticles,3to10µmindiameter.L14—Silicagelhavingachemicallybonded,stronglybasicquaternaryammoniumanion-exchangecoating,5to10&micr
