氢溴酸的

This new methods can shun corrosiveness of liquid bromine or gas hydrogen bromide released during bromating reaction to the equipments and eliminate harmfulness to the operating worker and environment.

研究以溴化钠/溴酸钠完全代替传统的溴素作为溴代试剂合成了四溴双酚A，避免了使用溴素和因溴素作为溴代试剂时产生的溴化氢对设备、操作人员以及环境的危害。

Methods The mercury in urine, which is the total amount of inorganic mercury in urine, including those produced from organic mercury after treated by potassium bromate and potassium bromide, is determined by atomic absorption spectrophotometer after reduction into mercury atom with sodium borohydride.

方法］尿样中汞（尿中无机汞和经溴酸钾－溴化钾处理尿中有机汞生成的无机汞之和）以硼氢化钠还原生成汞原子蒸气，用原子吸收光谱仪测定其汞的含量。

Bromoundecanoic acid was synthesized with 10-undecanoic acid and hydrobromic acid as raw materials.

以10-十一烯酸和溴化氢为原料合成11-溴代十一酸，考察了引发剂、溶剂、反应温度、后处理方法、熟化时间等因素对反应和产品的影响。

Bromoundecanoic acid was synthesized with 10-undecanoic acid and hydrobromic acid as raw materials. The effects of initiating agent, solvent, reaction temperature, the ways of disposal, ripening time etc. on the reaction and product were investigated.

以10-十一烯酸和溴化氢为原料合成11-溴代十一酸，考察了引发剂、溶剂、反应温度、后处理方法、熟化时间等因素对反应和产品的影响。

These conditions included original material source, reagent ratio, base solutions, power of the microwave, reaction time and so on.2, Chitosan obtained from above was modified by Schiff base type macrocycles, which was prepared by the reaction of the reagents of salicylaldehyde, glacial acetic acid, hydrobromic acid, chloroepoxy propane and the others.

反应的最优化条件为：物料比1：25；反应时间20min；NaOH溶液浓度为50%；微波功率为450w。 2、利用原料水杨醛、氢溴酸、冰醋酸等采用四步法合成了含羟基的Schiff碱型大环化合物，然后以取代方法将此Schiff碱型大环化合物负载到壳聚糖上，得到具有特殊结构与性能的壳聚糖衍生物，并得到各中间产物的红外光谱图。

We produce a reliable product quality and reasonable price, and customers have been recognized and well-led products; artemisinin, galanthamine hydrobromide, Uncaria alkaloids, such as pharmaceutical intermediates, in line with the new concept of modern green .

我们生产的产品质量可靠，价格合理，且得到了广大用户的肯定和好评，主导产品；青蒿素、氢溴酸加兰他敏、钩藤总碱等医药中间体，符合现代绿色环保新理念。

Heixiaoyao San has obvious protecting effect to the disturbance of learning and memory capability of mice induced by scopolamine hydrobromide, the effect could relate to antioxidation of free radical.

黑逍遥散对氢溴酸东莨菪碱引起的小鼠学习记忆能力障碍有明显的改善作用，其作用可能与抗自由基氧化有关。

In addition, our works also indicate that MC-ICPMS technique shows a good potential on Re-Os isotopic measurement. 2. A new method for the determination of low Re-Os abundances and ~(187)Os/~(188)Os in a natural rock sample by MC-ICP-MS has been established in our laboratory. Rock samples were digested in inverse aqua regia in sealed Carius tube for 24 hours at 230°C, then Os was separated from the matrix by CCl_4 solvent extraction, and further purification by microdistillation.

建立了Re-Os同位素样品的化学分离和纯化方法以及MC-ICPMS质谱测定方法：岩石样品的Re和Os化学分离方法是采用Carius管溶样法，结合四氯化碳萃取以及氢溴酸反萃取的方法分离出Os，最后是通过微蒸馏的方法纯化Os；利用阴离子交换树脂的方法分离纯化Re。

Propargyl alcohol was protected by dihydrophran with the catalysis of PPTS ,and then reacted with Ethyl Mag bromide to prepare its corresponding Grignard reagent.

炔丙醇在 PPTS 催化下由二氢吡喃保护，与溴乙烷格氏试剂反应生成相应的格氏试剂，然后与氯甲酸甲酯反应得到羟基丁炔酸甲酯四氢吡喃醚，在 PPTS 催化下脱保护后进行甲磺酰化，由溴化钠进行溴取代后合成了4-溴-2-丁炔酸甲酯，总收率达53%。

Due to N-N bond weakest, nitrosamines are denitrosated by HBr/HOAc to release nitrogen oxide, which can be oxidized to form NO〓. Trapped in sulphanilamide and N-1naphthylethylene diamine di-HCl solution, the NO〓 transforms into NO〓 and develops color in the solution.

该法根据亚硝基官能团中N-NO键的键能最低，采用氢溴酸/醋酸溶液选择性断裂N-N键，对逸出的NO通过氧化成为NO〓然后用显色剂吸收，再由分光光度计测量吸光度并计算出亚硝胺含量。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。