Methods The compounds were isolated by silica gel, ODS, and macroporous resin column chromatography and their structures were determined by means of spectral analysis.
方法利用正相、反相硅胶柱和大孔树脂柱色谱分离，并通过波谱技术进行结构鉴定。
Retention behavior of alkali metals, ammonium ion and alkyl amines on a sulfonic cation-exchange resin column with organic acid and inorganic acid as eluent was studied.
系统研究了碱金属、铵离子和烷基胺在磺酸型阳离子交换树脂柱上以有机酸和无机酸为淋洗液的保留行为。
Best results were obtained when the blood was allowed to flow through a column of resin into the collecting vessel.
当血液被允许流经一个树脂柱到收集容器中时，最好的结果得到了。
The petroleum carboxylic acids in two distillates of North Sea crude oil were separated by the extraction with column chromatogram and anion exchange resin.
采用柱色谱和阴离子交换树脂法分离出两种北海高酸馏分油中的羧酸。
Hydrolysis of methyl formate to form formic acid was studied experimentally by using strong-acid cation-exchange resin as catalyst and packing in a catalytic distillation column.
在催化精馏塔内以压制的强酸性阳离子交换树脂为催化剂填料对甲酸甲酯水解制甲酸进行了实验研究。
The test method for determining residual vinyl chloride monomer content in parts per billion level in PVC resin by capillary column gas chromatography headspace technique is suggested.
提出用大口径毛细管顶空进样气相色谱法对聚氯乙烯树脂中十亿分之一级残留氯乙烯含量的测量方法。
Method: Isolation and purification of the trace constituents were carried out mainly by solvents extraction and macroporous adsorbing resin and silica gel column chromatography.
方法：用纯净水提取，溶剂萃取，大孔吸附树脂和硅胶柱色谱分离等方法分离并纯化亚麻根的微量成分，通过波谱分析鉴定化合物的结构。
The loaded resin is backflushed with water, eluted with acid, regenerated with base, washed with water, and then returned to the adsorption column.
饱和树脂在专门设计的填充塔内进行水反冲洗、酸淋洗、碱再生以及水洗等处理后再返回吸附塔。
The method of using Epoxy resin coated bar is used for the construction of center column for thickener, which prevents the reinforced bar in the foundation of center column...
同时采用环氧树脂涂敷钢筋这一新技术解决浓缩池中心柱基础钢筋防腐问题。
The specimen was extracted by the macroreticular resin and silica gel column.
样品经大孔树脂柱、硅胶柱分离，然后用TLC进行鉴定合并。
The specimen was extracted by the macroreticular resin and silica gel column.
样品经大孔树脂柱、硅胶柱分离，然后用TLC进行鉴定合并。
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