查询词典 chromatogram

When ATRP of styrene was investigated with 1-phenylethyl bromide/benzyl a,a-dibromide mixture as initiator, the GPC chromatogram shows two elution peaks and the molecular weighs of the peaks are approximately in a 2/1 ratio. It suggests that benzyl dibromide is a difunctional initiator of ATRP of styrene. The analysis of end group using 1H-NMR also proves the result above.

采用1-苯基溴乙烷／α，α-二溴化苄混合引发剂进行苯乙烯的ATRP反应时，所得聚苯乙烯的GPC谱图为双峰，分子量相差一倍，初步证明了α，α-二溴化苄引发苯乙烯ATRP反应时是双官能引发剂，并用~1H-NMR对聚合物结构进行分析，进一步证明了α，α-二溴化苄引发苯乙烯ATRP时是双端同时增长的。

Determine the content of the moisture with the dry law of the atmosphere; With is it draw law draw fat , analyse the backbone fat first esterification with the gaseous phase chromatogram to ask for; Determine the content of starch by fastenning all law; Propose the alcohol and sink the law and draw many candies with water, and determine many content of candy more than the color law with the phenol - the sulphuric acid.

用常压干燥法测定水分含量；用索氏提取法提取脂肪，将脂肪甲酯化，用气相色谱分析主要成分；用旋光法测定淀粉含量；用水提醇沉法提取多糖，并用苯酚-硫酸比色法测定多糖含量。

After extracting the decoction with ethyl alcohol, the background of chromatogram was obviously reduced.

将麦冬水煎物经乙醇提取后，色谱曲线的背景可显著降低。

Sample preparation, chromatogram conditions, extractant and section of the standard sample are tested and discussed.

对样品制备、色谱条件、萃取剂和内标物选择进行了试验和讨论。

First, the PVC toy is crushed up, taked up by the alkyl to crank out fathomable solution of the muster. Secondly, we adopt gas chromatogram. The detector is flame ionization detector. Finally, we use inner mark to confirm the quantity.

本文先将塑料样品进行粉碎、用正己烷溶剂抽提，然后采用气相色谱法，选用氢火焰电离检测器，采取程序升温进行检测，用内标法对其进行定量分析。

Results The compounds in decoction of Schisandra chinensis were separated with gradient elution of methanol-water.The similarities of HPLC finger-print chromatogram of decoction of Schisandra chinensis were above 0.90.There were 18 common peaks.

结果 运用梯度洗脱能很好的分离五味子水煎物的各类成分，五味子水煎物的指纹图谱相似度均＞0.90，标示18个共有峰。

decoction of Schisandra chinensis;HPLC;finger-print chromatogram

五味子水煎物；HPLC；指纹图谱

In the experiment mentioned in this paper, fusel oil in the liquor is measured using gas chromatogram method. And the method is methodologically validated and improved.

本文试验中，应用气相色谱法对白酒中杂醇油的含量进行检测，并对此方法进行了方法学的验证和完善。

The content of Res and glucoside was measured by high performance liquid chromatography and gas chromatogram-mass spectrography.

采用高效液相色谱法和气相色谱-质谱法定量检测转基因生菜中白藜芦醇及白藜芦醇苷的含量。

Four kinds of endogenous phytohormones in latex of Hevea brasiliensis were tested by using PGRIA and Gaseous Chromatogram.

采用酶联免疫检测技术和气相色谱法测定了巴西橡胶树胶乳中生长素、细胞分裂素、脱落酸和乙烯等4种植物生长物质的含量。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。