氟乙酸

三氟乙酸对氨基酸催化不对称直接Aldol反应的影响

Effects of TFA on Amino Acids Catalyzed Asymmetric Direct Aldol Reaction

区域环境中三氟乙酸富积多相传质模型研究

Multiphase Mass Transfer Model on the Accumulation of TFA in Regional Environments

三氟乙酸溶液中尼龙6链凝聚缠结的NMR弛豫研究

Nuclear Magnetic Resonance Relaxation of Cohesional Entanglement of Nylon 6 Chains in Trifluoroacetic Acid Solution

三氟乙酸修饰TiO2纳米微粒的制备及磨擦学性能

Preparation and Tribological Properties of TiO_2 Nanoparticles Modified by Trifluoroacetic Acid

流动相A为1%的三氟乙酸溶液，B为乙腈-甲醇（75：25）；

The mobile phase was consisted of 1 % trifluoroacetic acid solution as mobile phase A and acetonitrile - methanol ( 75:25 ) as mobile phase B with UV detection at 275 nm .

三氟乙酸和丙三醇双掺TGS晶体生长与性能研究

Study on Growth and Properties of Doped TGS Crystal THREE-SPIN THEORY

掺三氟乙酸TGS晶体生长及其性能研究

Study on Growth and Properties of Trifluoroacetic Acid Doped TGS Crystals

右侧杏仁核注射β淀粉样肽（Aβ2535）制备AD大鼠模型，假手术组同样部位注射三氟乙酸；

The AD rat models were established by injecting amyloid-beta peptide ( A β _ 25-35 ) into right amygdala . The sham-operation rats were injected with trifluoroacetic acid in the same location .

氧化反应：室温条件下氧化24h，三氟乙酸与双氧水的体积比为1∶10。

For the oxidation reaction , under the conditions of 24h and room temperature , the volume proportion of trifluoroacetic acid and H_2O_2,1 ∶ 10 .

本文研究了水中微量三氟乙酸（TFA）的衍生化-气相色谱检测方法。

This study was focused on the determination of trace trifluoroacetic acid ( TFA ) with derivation-gas chromatography .

流动相：A相为0.2%的三氟乙酸水溶液，B相为含0.1%的三氟乙酸的乙腈溶液，线性梯度程序为：开始10%B；

The mobile phase was ( A ) aqueous trifluoroacetic acid solution ( 0.2 % ) solution and ( B ) acetonitrile trifluoroacetic acid solution ( 0.1 % ) . The gradient elution was modified as follows : initial 10 % B ;

探讨了三氟乙酸盐受热分解（TFAMOD）方法在多晶织构Ag基片上制备YBCO膜的工艺参数与薄膜的成分和取向、表面形貌及超导电性之间的关系。

The influences of processing parameters on phase purity and texture , surface morphology and superconducting properties of YBCO films fabricated by TFA-MOD method were discussed .

两个Schiff碱型离子液体是一个碱分子与两个乙酸或三氟乙酸成盐，其分子式分别为：SB（CH3COO）2和SB（CF3COO）2；

The molecular formula of the two based on Schiff base cation are SB ( CH3COO ) 2 and SB ( CF3COO ) 2 ;

然后使用反相高效液相色谱（RP-HPLC）对免疫九肽的三氟乙酸残留和有关物质进行分析，之后进行无菌检测，考察了产品质量。

And then used high performance liquid chromatography ( RP-HPLC ) to analyze trifluoroacetic acid residues and related substances , and after aseptic testing , we inspected the quality of products .

采用1D和2DNMR技术，归属了三氟乙酸（TFA）溶液中尼龙6链上的主要1HNMR共振信号。

An unambiguous assignment of the main 1H NMR resonance of nylon 6 in trifluoroacetic acid ( TFA ) solution was carried out by using a combination of 1D and 2D NMR heteronuclear technique ( HMQC ) .

方法采用HPLC法，C18柱，流动相为甲醇0.1%三氟乙酸水溶液（75∶25），检测波长为293nm。

METHOD HPLC method was used to carry out the determination , with C 18 Column , methanol-0.1 % trifluoroacetic acid water solution as the mobile phase ( 75 ∶ 72 ), and a wavelength of 293 nm .

三氟乙酸是HFC-134a等氯氟烃替代品的降解产物，对植物和土壤微生物群落的生长有一定抑制作用。

Trifluoroacetic acid ( TFA ) is degradation product of some CFCs alternatives , such as HFC-134a , which has some inhibitory effects on plants and soil microbial communities .

结果表明，采用乙腈和0.1%三氟乙酸组成的二元梯度洗脱程序，标准混合液中PCn等5种巯基化合物15min内得到很好的分离。

The results showed that by using ACN-0.1 % TFA binary gradient elution , PC_n and other thiol-containing compounds in the mixed standard solutions were rapidly separated within 15 min.

我们对LLM-105生成过程中的三氟乙酸进行了回收，但效果不理想，三氟乙酸占了整个LLM-105生成的一半成本，对其回收有很高的经济价值。

Trifluoroacetic acid accounted for half of the cost of in the synthesis process of LLM-105 , so the recycle is with high economic value .

乙腈-0.05%三氟乙酸溶液（70.5：29.5）为流动相；流速0.8mL·mim-1；

The mobile phase was acetonitrile - 0.05 % trifluoro - acetic acid solution ( 70.5:29.5 ) .

此方法较水中MC测定的国家标准方法，不仅省去三氟乙酸的使用，运行时间还得以缩短，大大降低MC检测的成本。

This method saves the use of drugs trifluoroacetic acid and greatly reducing the cost of MC detection because it can shorten the running time . So the method significantly reduce the cost of MC detection when it is compared with the water method of MC determination of national standards .

对LLM-105的工艺改进方面研究了甲氧基化、不同硝化体系、氨化条件、三氟乙酸与双氧水的体积比等因素对LLM-105总产率的影响，并优化了合成条件，确定了最佳工艺条件。

Investigated the effects of methoxylation reaction , the different nitration system , the different amination system and the volume proportion of trifluoroacetic acid and hydrogen peroxide on the total yield of LLM-105 .

通过采用氨基与羧基的保护，DCC的合成及三氟乙酸的脱胺等方法成功合成了二肽化合物，并通过ESI-MS、1H-NMR、IR等手段对产物进行表征。

By the protection of the amido and the carboxy , combining with DCC and taking off an amine as three fluorine acetic acid , two peptides have been synthesized successfully . Then they have been characterized , assigned and analyzed by ESI-MS , 1H-NMR , IR . 3 .

03012801为色谱柱，甲醇∶0.1%三氟乙酸水溶液（60∶40）为流动相；流速：1.0ml·min-1；

03012801 as analytic column , methanol-0.1 % trifluoroacetic Acid ( 60 ∶ 40 ) as mobile phase , the flow rate being 1.0 ml · min ~ - 1 , the detection wavelength at 273 nm .

三氟乙酸盐-金属有机沉积技术（TFA-MOD）是制备钇钡铜氧涂层导体的有发展前景的方法之一。

The metal organic deposition ( MOD ) of YBa_2Cu_3O_ ( 7-x )( YBCO ) using metal trifluoroacetate ( TFA ) precursor is considered to be a strong candidate as a low-cost fabrication process in coated conductors .

应用PPy-DEHS（2-（2-乙基己基）硫代丁二酸钠盐掺杂聚吡咯，溶剂为三氟乙酸）电解质装配的固体钽电解电容器具有较高的电容量和较低的损耗。

The capacitors prepared with PPy-DEHS ( PPy powder doped with di ( 2-ethylhexyl ) sulfosuccinate sodium salt ) electrolyte in trifluoroacetic acid show high capacitance and low tan δ .

色谱条件为：ODS-AM-303色谱柱（YMC，4.6mm×250mm，5μm），柱温40℃，含0.1%三氟乙酸的乙腈-水（40∶60）为流动相，流速1mL/min。

The chromatographic conditions are as follows : ODS-AM-303 column ( YMC , 4.6mm × 250mm , 5 μ m ) with the temperature of 40 ℃, acetonitrile-water ( 40:60 ) containing 0.1 % trifluoroacetic acid as mobile phase with the flow rate of 1mL / min.

三氟乙酸泥浆解堵固砂剂

Plug removal and sand consolidation agent of tri-fluorine acetic acid mud

氟乙酸和氟乙酰氯的制备

A note on the preparation of FLUOROACETIC acid and fluoroacetyl chloride

氟利昂替代品降解产物&三氟乙酸对水环境的潜在影响

Potential accumulation of Trifluoroacetates CFC-replacement degradation product in water