本文着重阐述了PFTHF的合成方法如电化学氟化法等的研究进展。
In this paper the main progress in synthesis methods of PFTHF such as electrochemical fluorination are emphasized.
前言:综述了近几年国内外含氟卟啉的合成及其研究进展。含氟卟啉合成方法分为直接氟化法和间接氟化法。 直接法主要采用无机氟化试剂直接对卟啉环进行氟化;
This review summarizes the recent progress in the research of fluoroporphyrins and its proper-ties. There are two methods for synthesis of the fluoroporphyrins: direct and indirect fluorination.
我们分别采用离子色谱法和氟离子选择电极法对茶叶中氟化物的含量进行测定。
We tested the quantity of fluoride in tea leaves by separately using fluorinion selective electrode and the ion chromatographys.
伊斯法罕的铀转化设施,是生产六氟化铀(UF 6,一种铀化合物转化为气体,进入离心机进行浓缩)的装置,在地表以上易于攻击。
The Isfahan conversion plant, which produces uranium hexafluoride (UF6, the uranium compound that is passed as a gas into the centrifuges to be enriched), is above ground and vulnerable to attack.
应用旋转圆盘法研究了三峡库区堆放的磷石膏中氟化物的浸取动力学特性。
The leaching of fluoride in phosphogypsum piled up in three gorge reservoir area was conducted by rotating disk method.
方法:分别采用离子色谱法和氟离子选择电极法对茶叶中氟化物的含量进行测定,并将结果进行比较。
Methods:First, we tested the quantity of fluoride in tea leaves by separately using fluorinion selective electrode and the ion chromatography and then compared the results.
在茜素染料法中,氟化物的消色作用较慢。
The bleaching action of fluorides is slow in the alizarin dye procedure.
目的用电极法直接测定全血血糖及乳酸,比较甘油醛与氟化钠对血葡萄糖的保护作用和对血乳酸生成的抑制作用。
Objective to compare the effect of glyceraldehydes with that of sodium fluoride to preserve glucose and lactic acid in whole blood specimens.
实验证明,在此工艺中应用一步半法生产的混合铀氧化物可制备高品位的四氟化铀。
It is experimental fact that a high grade uranium tetrafluoride can be prepared, if we use denitrated mixed uranium oxides produced by one and half step method.
应用正交试验法,研究了碱金属氧化物及氟化物对环保型无铅釉上彩熔剂性能的影响。
The effect of alkaline metal oxides and fluorides on the performances of green leadless fluxing agents for overglaze colors were studied by means of orthogonal experiments.
该法用于测定植物叶片中氟化物,准确度高,重复性好,分析效率高,值得推广应用。
The method is applied to the determination of fluoride in plant leaves, high accuracy, good repeatability, high analysis efficiency, and it is worth popularizing.
探索了各步反应的工艺条件,对其中的关键步骤氟化反应,使用相转移催化剂取得较好的效果,反应收率比溶剂法提高10%左右。
The suitable technological conditions were investigated for each steps. In order to increase the yield of fluorination which was the key step, some phase transfer catalysts were used and researched.
探索了各步反应的工艺条件,对其中的关键步骤氟化反应,使用相转移催化剂取得较好的效果,反应收率比溶剂法提高10%左右。
The suitable technological conditions were investigated for each steps. In order to increase the yield of fluorination which was the key step, some phase transfer catalysts were used and researched.
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