溴

Phase transfer catalyst;Third liquid phase;Solvent effect;Sodium phenolate;Tetrabutylammonium bromide;Butyl bromide

中文关键字相转移触媒；第三液相；溶剂效应；酚化钠；溴化四丁基铵；正溴丁烷

As the second part of a series of studies on the synthesis of 2-phenoxyisobutyric acid ethyl ester by tri-liquid-phase catalysis, this work examines the factors affecting the reaction between 2-bromoisobutyric acid ethyl ester and sodium phenolate with tetra-n-butylammonium bromide as a phasetransfer catalyst.

本文为以三液相催化技术合成2-苯气基异丁酸乙酯之研究系列的第二部份，主要在探讨各变因对以溴化正四丁基铵为相间转移触媒，催化2-溴异丁酸乙酯与酚化钠（NaOPh，水相亲核试剂）反应的影响。

Add 32 grams of potassium bromide and 0.8 gram potassium iodide to the gelatin solution and stir until dissolved.

溶解溴化钾和碘化钾：将32克溴化钾和0.8克碘化钾放入凝胶溶液，并不断搅动直到溶解。

Bromobutane was synthesized from potassium bromide and n-butyl alcohol by adding concentrated sulfuric acid in water. Various affecting factors were investigated.

以溴化钾、正丁醇为反应原料，水为溶剂，滴加浓硫酸合成溴代正丁烷。

Bromooctane was synthesized from potassium bromide(by-product of synthesizing 2-hydroxy-4-octyloxybenzophenone) and n- octanol using concentrated sulfuric acid as a catalyst.

以生产2-羟基-4-正辛氧基二苯甲酮的副产物溴化钾和正辛醇为原料，浓硫酸为催化剂，合成了溴代正辛烷。

Benzyl bromide was synthesized from potassium bromide ,a by-product from synthesis of 2-hydroxy-4-n-octyloxybenzophenone(UV-531),and benzoic alcohol in the presence of concentrated sulfuric acid.

溴化钾作为工业生产2-羟基-4-正辛氧基二苯甲酮的副产品，在浓硫酸存在的条件下，与苯甲醇进行反应合成苄基溴。

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。

Pd combined with tetrabutyl ammonium bromide and potassium bromide into a ternary ion association precipitate in the aqueous solution. The precipitate was floated well on the surface of water phase to make a distinct boundary layer between liquid and solid phases.

在水溶液中，钯与溴化钾和四丁基溴化铵形成不溶于水的三元离子缔合物，此三元离子缔合物浮于盐水相上层形成界面清晰的液－固两相。

A novel catalytic resonance light scattering method for the determination of traces of formaldehyde in blood plasma was developed. It was based on the fact that potassium bromate reacted with pyronine Y to form association nanoparticles which gave stronger resonance light scattering effect, and formaldehyde can catalyze potassium bromate oxidizing pyronine Y resulting in decreasing of the intensity of resonance light scattering in sulfuric acid.

在稀硫酸介质中，溴酸钾与吡啰红Y能聚集成较大粒径的纳米微粒而使共振光散射增强，而甲醛能催化溴酸钾氧化吡啰红Y而导致体系共振光散射减弱，据此建立了一种灵敏、简单、快速测定血浆中痕量甲醛的新方法。

This is caused by the intercalation of MB to DNA bases which restricts the rotational motion of MB.

溴化乙锭的存在使MB-DNA体系的荧光强度增强，这是由于溴化乙锭与MB竞争结合DNA而使MB与DNA的结合反应向左移动，溶液中游离MB浓度增加了的缘故。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。