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 .

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；

Diacetone acrylamide was synthesized with acrylonitrile and acetone as raw material and with trifluoroacetic acid and concentrated sulfuric mixed acid as catalyst .

以丙烯腈和丙酮为原料， 探索以 三 氟 乙酸和浓硫酸组成的混酸作催化剂合成双丙酮丙烯酰胺工艺。

Trifluoroacetic acid can cause redshift of UV-Vis absorption spectra and great enhancement of the fluorescent intensity at 433 nm owing to the effect of protonation .

用 三 氟 乙酸质子化，可引起紫外-可见吸收光谱的红移以及433nm处荧光强度的显著增强。

Three . Synthesis and application of trifluoroacetic acid

三 氟 乙酸的制备及应用

Methods 3-Fluoro-4-methoxybenzaldehyde was prepared through the reaction of 2-fluoroanisole with hexamethylenetetramine in the presence of trifluoroacetic acid and then extracted with anhydrous ether from the mixture after basification with potassium carbonate .

方法以 三 氟 乙酸为溶剂，邻氟苯甲醚与六次甲基四胺发生回流反应，通过无水碳酸钾调节酸碱度、无水乙醚萃取等操作制备3氟4甲氧基苯甲醛。

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

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。

Trifluoroacetic acid ( TFA ) was used as the retaining acid and ammonia liquor as the eluent base . The solvent system was n-hexane-acetic ester-methanol-water ( ratio by volume was 9 ∶ 1 ∶ 5 ∶ 5 ) .

采用 三 氟 乙酸做为保留酸，氨水作为洗脱碱，溶剂系统为正己烷/乙酸乙酯/甲醇/水（体积比为9∶1∶5∶5）。

In this paper some mixed ligand complexes of rare earth with 1 and trifluoroacetic acid were synthesized in aquo-organic solvent . The composition of complexes is Ln ( CF3COO ) 3 ·( Phen ) 3 · nH2O .

本文在含水溶剂中合成得到稀土 三 氟 醋酸盐 与 三份邻菲罗啉配位的配合物，确定其组成为Ln（CF3COO）3·（Phen）3·nH 2O。

When SiO2-g - ( PCL-b-PtBA ) nanohybrids were subjected to hydrolysis with trifluoroacetic acid pH-sensitive SiO2-g - ( PCL-b-PAA ) hybrid materials were obtained whose surface charge numbers and sizes of aggregates at different pH values were quite different .

将SiO2-g-（PCL-b-PtBA）纳米杂化材料进行水解，得到了具有pH敏感性的 SiO2-g-（PCL-b-PAA）杂化材料，其表面电荷和聚集体尺寸大小随pH值的改变而显著不同。

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.

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。

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 .

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；

Study on Growth and Properties of Trifluoroacetic Acid Doped TGS Crystals

掺 三 氟 乙酸TGS晶体生长及其性能研究

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 .

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。

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 ;

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 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 .

流动相A为1%的 三 氟 乙酸溶液，B为乙腈-甲醇（75：25）；

Preparation and Tribological Properties of TiO_2 Nanoparticles Modified by Trifluoroacetic Acid

三 氟 乙酸修饰TiO2纳米微粒的制备及磨擦学性能

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 ) .

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。

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

三 氟 乙酸溶液中尼龙6链凝聚缠结的NMR弛豫研究

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 .

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。

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

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。

Finally in the methylation reaction of S-adenosyl methionine anisole was used in the extraction process of trifluoroacetic acid then distilled to recover the trifluoroacetic acid .

在甲基化生成S-腺苷蛋氨酸的反应完成后，用苯甲醚来萃取反应过程中使用的 三 氟 乙酸，萃取液蒸馏后，得到回收的三氟乙酸。

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

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。

To trifluoroacetic acid as a catalyst in solvent-free under the condition of the THC for three cyclopentadiene isomerization .

以 三 氟 甲 磺酸为催化剂，在无溶剂的条件下对四氢三环戊二烯进行异构化反应。

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 .

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。

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 .

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。

Trifluoroacetic acid pyridine salt ;

三 氟 乙酸吡啶鎓；

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 .

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。

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 .

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。