The conditions for extraction and mobile phase were optimized.
优化不同性质样品的提取条件及测定的流动相。
The mobile phase consisted of sodium acetate solution, water and methanol.
结果样品提取液与对照品存在相对应的牛磺酸色谱峰。
In some cases, the sample may be diluted with mobile phase to improve the peakshape.
在一些情况下,为了改善峰形,样品溶液可以用流动相稀释。
Bonded stationary phase filler carried by silicon gel applies to pH2 ~ 8 mobile phase.
以硅胶为栽体的键合固定相填充剂适用pH 2 ~8的流动相。
NH2 column was used with the mobile phase of 0.1% trifluoroacetic acid-acetonitrile by gradient elution.
采用氨基色谱柱,流动相为0.1%三氟乙酸-乙腈(梯度洗脱)。
The composition of mobile phase, flow rate and column temperature were optimized to get better resolution.
考察了流动相组成、流速和柱温对分离度的影响。
Additionally, enthalpy and entropy both contributed to enantioseparation when mobile phase was acetonitrile.
流动相为纯乙腈时,焓和熵对对映体的拆分均有贡献。
The detection wavelength, sample preparation and the optimization of mobile phase constitution were discussed.
讨论了检测波长的选择和样品的制备,优化了流动相的组成。
The composition of mobile phase has different influence on the elution range and ability to the two types of solutes.
流动相组成对这两种类型溶质的洗脱范围及洗脱能力的影响不同。
In adsorption chromatography, solute molecules of the mobile phase undergo many successive adsorptions and desorptions.
在吸附色谱中,流动相的溶质分子进行多次连续的吸附和脱附。
Objective: to establish an HPLC method for the resolution of metoprolol enantiomer using chiral mobile phase additives.
目的:建立hplc手性流动相添加剂法拆分美托洛尔对映体的方法。
Method:To study chromatogram peak and the result with the silica gel column and ODS column with different mobile phase;
方法:分别用硅胶柱和ODS柱采用不同的流动相对色谱峰及测定结果进行考察。
Radix Scutellariae was examined by Silca gel-G, the mobile phase was ethyl acetate-butanone-formic acid-water (5:3:1:1).
黄芩:采用硅胶G板,以醋酸乙酯-丁酮-甲酸-水(5:3:1:1)为展开剂,显色剂为1%三氯化铁乙醇溶液。
Methods Under linear scale up mode, overlapping separation range map was used to optimize the composition of mobile phase.
方法在线性放大模式下,使用重叠分辨图法对流动相组成进行优化调节。
NH2 column was used with the mobile phase of acetonitrile-water (75:25). The differential refractive index detector was used.
采用氨基键合硅胶柱,以乙腈-水(75∶25)为流动相,使用示差折光检测器。
The validity of the method is verified through the selection of optimal operating condition in binary and ternary mobile phase systems.
通过对反相色谱二元和三元体系操作参数的优化选择,确证了方法的可靠性。
Chloroform - tetrahydrofuran - water (500:500:8) was used as mobile phase for the gradient elution of other strongly retained substances.
继用氯仿-四氢呋喃-水(500:500:8)为流动相,梯度洗脱其他强保留组分。
The BHT in chewing gum was treated with ethyl acetate, then analyzed by high performance liquid chromatography with methanol as mobile phase.
采用乙酸乙酯处理样品,甲醇作流动相,测定了口香糖中抗氧化剂BHT含量。
METHODS: Fixing other conditions than the composition and ratio of the mobile phase, estimate the optimum according to the separation results.
方法:固定其他色谱条件,改变流动相组成与配比,以分离结果的优劣优化流动相。
Method: Same mobile phase and detection wavelength were selected and suitable precipitating agent was used. The HPLC conditions were optimized.
方法:选择相同的流动相和检测波长,采用适当的沉淀剂,对四种添加剂的检测条件进行了优化。
ConclusionUsing aqueous solution of KH2PO4 as mobile phase of reverse phase liquid chromatography, water was the suitable solvent to the extract.
结论以KH2PO4水溶液为反相色谱法的流动相时,用水作为试样的溶剂较适宜。
Study on HPLC method for analyzing of trace pigments in ready-to-drink tea was conducted by using different eluants with acetonitrile as mobile phase.
以含乙腈的流动相作为洗脱剂,对茶饮料中微量色素物质的HPLC分析方法进行了研究。
The main factors, including the selection of mobile phase and internal reference materials and effects of inject ion volume and matrix were investigated.
讨论了流动相及内标的选择,进样量和空白基质的影响等。
Meanwhile, the separation of fullerenes including 3% high fullerenes was investigated at the temperature of 348 K using pure toluene as the mobile phase.
同时考察了以甲苯为流动相,在348K的柱温下,该固定相分离富勒烯混合物(含3%高富勒烯)的情况。
Separations based on formation of diastereomeric ion-pairs were fulfilled in systems with an organic mobile phase using achiral and chiral stationary phases.
应用手性和非手性柱固定相,在正相色谱系统中,手性药物和手性离子对试剂形成非对映离子对复合物,从而使手性药物得以分离。
It was also found there exists a linear relationship between the logarithm of adsorbed amount and molar concentration of the displacing agent of mobile phase.
而且,进一步研究了吸附量与溶剂浓度的关系,发现在保留情况下,其吸附量的对数与流动相中置换剂的摩尔浓度之间成线性关系。
It was also found there exists a linear relationship between the logarithm of adsorbed amount and molar concentration of the displacing agent of mobile phase.
而且,进一步研究了吸附量与溶剂浓度的关系,发现在保留情况下,其吸附量的对数与流动相中置换剂的摩尔浓度之间成线性关系。
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