查询词典 separation

The method was applied to quantitative separation and determination of trace chromium in water.

方法可用于环境水样和废水中微量铬的测定。

Through extraction, separation, purification and structural identification, the functional compound in Chufa husk was found to be the same compound as that in waste slurry.

再次通过分离纯化、气质联用分析荸荠皮中的功能物质，发现其主要成分和实验中从产粉废浆中提取的功能因子相同。

Also the molecular structure and functional effects of this active component were studied in detail. 1 Extraction, separation, purification and structural identification of the functional component in Chufa After initial handling of waste slurry to solid powder, ethanol was used to lixiviate it followed by the extraction with petroleum ether,ethyl acetate,n-butyl alcohol one by one, the polarity of three organic reagents being changed from low to high.

荸荠功能因子的提取、分离、纯化及结构鉴定以马蹄粉厂产粉废浆为原料，经过实验室初处理成固态原料粉后，用乙醇浸提，再将浸提物以水悬浮，依次通过极性从小到大的石油醚、乙酸乙酯、正丁醇三种有机溶剂两相萃取分部，并以金黄葡萄球菌、枯草芽孢杆菌和致病大肠杆菌为指示菌，检测上述各部分提取物的功能效果。

The thermodynamic parameters in the separation of enantiomers of amino acid derivatives and diastereomers of cinchona alkaloids were calculated and the dissociation constants of cinchonine and cinchonidine on the cinchonine imprinted monolithic disk were determined by frontal analysis.

计算了氨基酸衍生物对映体以及辛可纳非对映异构体分离过程的热力学参数并利用前沿色谱法测定了辛可宁和辛可尼丁在盘状分子印迹整体柱上的离解平衡常数。

A rapid separation of cinchonine and cinchonidine was obtained under optimizing conditions.

通过对分离条件的优化实现了辛可宁和辛可尼丁的快速分离。

As the retention times of cinchonine and cinchonidine were decreased with the increase of voltage, applied pressure and temperature, a rapid separation of cinchonine and cinchonidine can be obtained within 2 min under optimized conditions.

通过对上述条件的优化，可以在2 min内完成辛可宁和辛可尼丁的快速分离。

Diastereomers of cinchonine and cinchonidine were separated in pressure-assisted capillary electrochromatography mode, and the resulted separation efficiency was much higher than that obtained in high performance liquid chromatography.

采用压力辅助电色谱模式拆分了非对映异构体辛可宁和辛可尼丁，其柱效远高于其在HPLC中拆分的结果。

A nonaquous capi l l ary e l ecbophoretic chira l separation of l , l '-bi-2-naphtho l with a new chira l se l ector N-benzy l cinchonine ch l oride is described in this paper.

利用新的手性选择剂苄基氯化辛可宁，在非水相中成功地分离了联萘酚对映体，并对分离的机理作了初步地探讨。

The circumfluent circulation cyclone separator is an important breakthrough for the cyclone separation technology,which can efficiently collect submicron dusts(≤2μ) with low pressure drop and great turndown ratio.

环流循环除尘系统是旋风分离技术上的一个重要突破，它成功地解决了用旋风分离器高效捕集亚微米粉尘(≤2μ)的问题，同时还具有压降低、操作弹性大等优点。

In this paper, the separation of tin cladding from tinned copper wires and its recovery are investigated.

本文采用置换反应方法除去废铜线表面的锡镀层，对回收锡的工艺进行了探索。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。