常見例句Objective:A method was developed for the determination of the dioxane in Ftibamzone by headspace gas chromatography. 目的:建立了頂空氣相色譜法測(cè)定酞丁安中二氧六環(huán)的含量。OBJECTIVE: To study the synthetic method of 2,2 dimethyl 5 hydromethyl 1,3 dioxane. 目的:探討2,2二甲基5羥甲基1,3二氧六環(huán)的合成方法。The synthesis of 1,4 dioxane from diethylene glycol using p toluene sulphonic acid as a catalyst was discussed. 利用二甘醇為原料,以對(duì)甲苯磺酸為催化劑合成了1,4-二氧六環(huán)。Determination with gas chromatography/flame ionization detector(GC/FID) for dioxane in cosmetics was developed. 建立了用毛細(xì)管氣相色譜配氫火焰離子化檢測(cè)器測(cè)定洗滌和化妝品中二惡烷的方法。Dioxane has been frequently detected in river water, especially in ground water polluted by volatile halogenated hydrocarbons. 二惡烷經(jīng)常會(huì)在河水、特別是地下水中被檢測(cè)到,這主要是由于揮發(fā)性的鹵代碳?xì)浠衔镌斐傻奈廴尽?/li>The copolymers prepared by solution polymerization in THF or dioxane were better supporter for the synthesis of highly active supported catalyst. 在溶劑THF或二氧六環(huán)的存在下制得的苯乙烯-丙烯酸共聚物最適宜于合成高活性的載體釹絡(luò)合物。 返回 dioxane