用气相色谱对低烯烃火花点火引擎燃料芳香碳氢化合物类型,环烃,烯烃,石蜡和氧化物的标准试验方法。
Standard test method for oxygenates and paraffin , olefin , naphthene , aromatic o - pona hydrocarbon types in low - olefin spark ignition engine fuels by gas chromatography.
其中17个组分经色谱-质谱分析,并用标准化合物进行对照,确定是多元苯羧酸类和酚酸类化合物。
Among these components, 17 of which were identified as benzene carboxylic acids and phenolic acids by using GC-MS analysis and by comparing with authentic compounds.
建立反应混合物转化率与凝胶渗透色谱(GPC)谱图峰面积的标准曲线,采用GPC测定反应混合物转化率和聚合物的分子量及分布。
The thesis includes the following aspects:Based on the calibration curve established, the conversion data of reaction mixtures were determined by Gel Permeation Chromatography (GPC) method.
对色谱柱、柱温、内标物、标准样等色谱分离条件的选择进行了探讨。
Selection of gas chromatography separate - conditions, such as column, temperature, internal standards, and reference samples, are probed.
方法:采用顶空毛细管气相色谱法,以标准溶液加入法测定三七提取物中有机溶剂残留量。
Methods: The samples were injected into HP-INNOWAX capillary column by headspace sampler and analyzed with FID detector using standard addition method.
本文介绍了荧光增白剂DMS的合成及“三嗪”副产物的测定;采用合成“三嗪”标准物为外标,用液相色谱定性、定量地测定了样品中“三嗪”副产物的含量。
The synthesis method of the optical brightener DMS was provided and the triazines which were produced as by-production were examined by HPLC with the aid of the triazines standard.
采用紫外、高效液相色谱对微波提取物进行了定性分析并与标准谱图对照,结果表明微波短时处理茶叶,茶多酚的化学结构无明显变化。
TP was analyzed by UV spectrum and HPLC. The result showed that green tea was treated by microwave in a short time, the structure of TP was changed little.
一旦DNA包裹目标纳米管,标准的化学技术(如色谱法)可从复合物中高效地分离出这些纳米管。
Once the target nanotubes are enveloped with the DNA, standard chemistry techniques such as chromatography can be used to separate them from the mix with high efficiency.
将标准溶液注入色谱仪,并记录色谱图:卡托普利的相对保留时间是0.5,卡托普利二硫化物相对保留时间为1.0;
Chromatograph the Standard preparation, and record the peak responses as directed for Procedure: the relative retention times are about 0.5 for captopril and 1.0 for captopril disulfide;
将标准溶液注入色谱仪,并记录色谱图:卡托普利的相对保留时间是0.5,卡托普利二硫化物相对保留时间为1.0;
Chromatograph the Standard preparation, and record the peak responses as directed for Procedure: the relative retention times are about 0.5 for captopril and 1.0 for captopril disulfide;
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