• 本文着重阐述PFTHF合成化法等的研究进展

    In this paper the main progress in synthesis methods of PFTHF such as electrochemical fluorination are emphasized.

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  • 前言:综述近几年国内外含合成及其研究进展。含卟啉合成分为直接氟化法间接氟化法。 直接主要采用无机氟化试剂直接卟啉环进行氟化

    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.

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  • 我们分别采用离子色谱离子选择电极茶叶氟化含量进行测定

    We tested the quantity of fluoride in tea leaves by separately using fluorinion selective electrode and the ion chromatographys.

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  • 伊斯设施生产氟化铀(UF 6,种铀合物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.

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  • 应用旋转圆盘研究三峡库区堆放磷石膏氟化的浸取动力学特性。

    The leaching of fluoride in phosphogypsum piled up in three gorge reservoir area was conducted by rotating disk method.

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  • 分别采用离子色谱离子选择电极茶叶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.

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  • 茜素染料中,氟化消色作用

    The bleaching action of fluorides is slow in the alizarin dye procedure.

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  • 目的电极直接测定血糖乳酸比较甘油醛氟化血葡萄糖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.

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  • 实验证明,此工艺中应用一步生产混合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.

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  • 应用正交试验研究了碱金属氟化环保型无铅釉上彩熔剂性能影响

    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.

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  • 用于测定植物叶片氟化准确度,重复性,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.

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  • 探索反应工艺条件,对其中关键步骤反应,使用转移取得较好的效果,反应收率比溶剂提高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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  • 探索反应工艺条件,对其中关键步骤反应,使用转移取得较好的效果,反应收率比溶剂提高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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