美国药典（USP）中规定的色谱柱类型
Chromatographic Reagents
The following list of packings (L), phas (G), and supports (S) is intended to be a convenient reference for the chromatographer. [note—Particle sizes given in this listing are tho generally provided. Where other, usually finer, sizes are required, the individual monograph specifies the desired particle size. Within any category of packings or phas listed below, there may be a wide range of columns available. Where it is necessary to define more specifically the chromatographic conditions, the individual monograph so indicates.]
pancake
Change to read:
Packings
L1—Octadecyl silane chemically bonded to porous silica or ceramic micro-particles, 1.5 to 10 µm in diameter, or a monolithic silica rod.
L2—Octadecyl silane chemically bonded to silica gel of a controlled surface porosity that has been bonded to a solid spherical core, 30 to 50 µm in diameter.
L3—Porous silica particles, 3 USP31 to 10 µm in diameter, or a monolithic silica rod. USP31会计英语词汇
L4—Silica gel of controlled surface porosity bonded to a solid spherical core, 30 to 50 µm in diameter.
beard的意思
L5—Alumina of controlled surface porosity bonded to a solid spherical core, 30 to 50 µm in diameter.
L6—Strong cation-exchange packing–sulfonated fluorocarbon polymer coated on a solid spherical core, 30 to 50 µm in diameter.
L7—Octylsilane chemically bonded to totally porous silica particles, 1.5 to 10 µm in diameter, or a monolithic silica rod. USP31
stealthy
L8—An esntially monomolecular layer of aminopropylsilane chemically bonded to totally porous silica gel support, 3 to 10 µm in diameter.
L9—Irregular or spherical, totally porous silica gel having a chemically bonded, strongly acidic cation-exchange coating, 3 to 10 µm in diameter.
paxil
L10—Nitrile groups chemically bonded to porous silica particles, 3 to 10 µm in diameter.
L11—Phenyl groups chemically bonded to porous silica particles, 1.5 to 10 µm in diameter.
L12—A strong anion-exchange packing made by chemically bonding a quaternary amine to a solid silica spherical core, 30 to 50 µm in diameter.
L13—Trimethylsilane chemically bonded to porous silica particles, 3 to 10 µm in diameter.
L14—Silica gel having a chemically bonded, strongly basic quaternary ammonium anion-exchange coating, 5 to 10 µm in diameter.
L15—Hexylsilane chemically bonded to totally porous silica particles, 3 to 10 µm in diameter.
L16—Dimethylsilane chemically bonded to porous silica particles, 5 to 10 µm in diameter.
L17—Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the hydrogen form, 7 to 11 µm in diameter.
dominantL18—Amino and cyano groups chemically bonded to porous silica particles, 3 to 10 µm in diameter.
L19—Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the calcium form, about 9 µm in diameter.
L20—Dihydroxypropane groups chemically bonded to porous silica particles, 5 to 10 µm in diameter.
L21—A rigid, spherical styrene-divinylbenzene copolymer, 5 to 10 µm in diameter.剑桥少儿英语预备级教案
雅思听力机经下载
L22—A cation-exchange resin made of porous polystyrene gel with sulfonic acid groups, about 10 µm in size.
L23—An anion-exchange resin made of porous polymethacrylate or polyacrylate gel with quaternary ammonium groups, about 10 µm in size.
L24—A mi-rigid hydrophilic gel consisting of vinyl polymers with numerous hydroxyl groups on the matrix surface, 32 to 63 µm in diameter.
[note—Available as YMC-Pack PVA-SIL manufactured by YMC Co., Ltd. and distributed by Waters Corp. ().]
毛线衣
L25—Packing having the capacity to parate compounds with a molecular weight range from 100–5000 (as determined by polyethylene oxide), applied to neutral, anionic, and cationic water-soluble polymers. A polymethacrylate resin ba, cross-linked with polyhydroxylated ether (surface contained some residual carboxyl functional groups) was found suitable.
L26—Butyl silane chemically bonded to totally porous silica particles, 3 to 10 µm in diameter.
L27—Porous silica particles, 30 to 50 µm in diameter.
lea
L28—A multifunctional support, which consists of a high purity, 100 , spherical silica substrate that has been bonded with anionic exchanger, amine functionality in addition to a conventional reverd pha C8 functionality.
