二钠

This article introduces manufacturing methods of taurine by means of sodium hydroxyethyl sulfonate ammonolysis acidification .

研究了羟乙基磺酸钠氨解酸化法生产牛磺酸的工艺，对其中的高压氨解反应过程采用二次回归正交设计实验方法进行了优化。

ABSTRACT AIM: to study the antidotal mechanism of sodium dimercaptopropanesul fonate on ethyl thioethylsulfonate.

目的：研究二巯丙磺钠对乙基硫代磺酸乙酯(抗菌剂402， ethy l thioethylsulfonate，简称ET)解毒机制。

The linear ranges were 14.0￣140 μg/ml( r = 0.9998 ) for caffeine; 27.0￣270.0 μg/ml ( r = 0.9998 )for antipyrine; 0.1￣1.0 mg/ml ( r =0.9999) for sodium salicylate.

色谱条件为：KromasilC18色谱柱，流动相为20mmol／L磷酸二氢钾－甲醇－冰醋酸（55250.4），流速1ml／min，检测波长为242nm，线性范围：咖啡因14.0～140.0μg／ml，r＝0.9998；安替比林27.0～270.0μg／ml，r＝0.9998；水杨酸钠0.1～1.0mg／ml，r＝0.9999。

In this paper, the catalytical esterification of palmitic acid with 1 hexadecanol by lipase immobilized by microemulsion base organo gel that consisted of bis (2 ethylhexyl)sodium sulphsuccinate/heptane/water/gelatin in apolar organic solvent was studied.

研究了以AOT二(2 乙基已基琥珀酸酯磺酸钠/正庚烷/水/明胶组成的反相微乳凝胶固定化脂肪酶，在有机溶剂中催化棕榈酸和十六醇的酯化反应。

The activity of the purified enzyme was strongly inhibited by sodium azide and partially inhibited by cysteine and dithiothreitol.

叠氮钠可强烈抑制漆酶活性，半胱氨酸和二硫苏糖醇可部分抑制漆酶活性。

The effects of substituents on the nucleophilic reaction of benzyl halide and sodium azide were studied.

合成了叠氮苄、对氰基叠氮苄，对氟叠氮苄，对甲基叠氮苄和联苯二叠氮苄，研究了苯环上不同取代基对苄基卤代物与叠氮化钠经亲核取代反应生成苄基叠氮化物的反应的影响。

The additives chosen are the sodium dodecyl benzene sulfonate and potassium bichromate respectively.

分别以十二烷基苯磺酸钠和重铬酸钾作为添加剂，在有效添加剂量为40mg/kg时，0.177mm以上硫酸钠筛上物分别为67.18%和51.12%。

The results showed that mobilities of disaccharide-borate and polylol-borate complexes were relative to pH, concentration of borate and structure of them.

实验结果表明，二糖、多元醇硼酸络合物淌度与溶液的pH值、四硼酸钠的浓度及它们的结构有关。

Ton Calcium Hypochlorite collected has arrived in Dujiangyan at 7:30 this morning.

随着灾情的变化和灾区卫生防疫工作的开展，组织落实卫生消毒药品。5月17日开始将落实的二氯异氰尿酸钠共200吨由江苏陆续向灾区起运，已先后运出两批计138吨；落实了25吨漂粉精已于今晨7时30分到达都江堰市。

It was found that these two nutrients affected the growth of Chlorella significantly,and there were significant interaction between them.

结果表明，氯化铵和磷酸二氢钠对该藻增殖具有极显著作用，且这两种营养盐之间存在交互作用。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。