xad

A method of separate and concentrate dissolved organic matter by XAD resin in natural aquatic systems

应用XAD系列树脂分离和富集天然水体中溶解有机质的研究进展

The results showed that the adsorption of lipoic acid on XAD 4 resin is Langmuir monolayer , and the adsorption rate appears to be the first order kinetics .

结果表明：硫辛酸在XAD4树脂上是单层吸附，符合Langmuir等温吸附方程，吸附过程符合准一级动力学吸附方程。

Based on the math model of synchronous motor under the Xad per unit system , the paper constructs the emulation model of salient-pole synchronous motor by using MATLAB / SIMULINK software .

分析了当前系统仿真模型验证中存在的主要技术问题，指出验模不通过或结果散布大的主要原因之一是过程中存在未建模的动态过程。

The semi volatile organic compounds in the water were extracted by using mixed resins of XAD 2 and XAD 4 and determined by the high resolution GC MS method .

湖水中半挥发性有机化合物的提取采用XAD2和XAD4混合树脂富集，用气相色谱高分辨质谱法测定了所萃取的有机化合物，并给出相应的分子式和结构式。

With the model of chlorinated humic acids , we studied the effects of resin type , water pH and desorbents on the efficiencies of XAD resins to recover organic mutagenic materials .

以氯化腐植酸溶液为模型，研究了树脂型号、水样pH值和洗脱剂对XAD树脂浓集有机致突变物的影响。

In order to study the headspace aroma changing law after the rotating process for Oolong tea , headspace aroma of samples is absorbed by XAD 2 and then analyzed by GC and GC / MS.

为探明做青后续加工过程中乌龙茶头香的变化规律，采用XAD-2树脂捕集头香，经溶剂洗脱，GC和GC/MS分析。

Adsorbable organic components were isolated and concentrated by XAD series resins . Adsorbed organic components were extracted by Soxhlet extractor , and concentrated by KD concentrator , then qualitatively analyzed by GC / MS.

可吸附组分用XAD系列树脂富集，树脂吸附物经索氏提取和KD浓缩后，用气相色谱/质谱法定性分析。

In order to examine the effect of the rotating process on the aroma forming of Oolong tea , XAD 2 was used to absorb the headspace of samples and the headspace analyzed by GC and GC / MS.

为探讨做青对乌龙茶香气形成的作用，采用XAD-2吸附剂捕集香气、GC和GC/MS分析，对乌龙茶做青及晒青工序的香气变化进行了研究。

In recent years , with the development of separation technique by XAD resin in DOM , there have been made some achievements in the isolation of humic solutes and non-humic solutes . In this paper the author describes this method in detail and gives a farther prospect .

近年来，随着XAD树脂分离技术在DOM分离中的广泛应用，腐殖质和非腐殖质的分离取得了很大进展，文章对这些方法进行了详细的综述，并做了进一步的展望。