查询词典 trichloroacetic

Abstract］ Objective: To explore the method for repairing tympanic membrane perforation due to chronic suppurative tympanitis. Method: 50% trichloroacetic acid solution was used to ignite the margin of the old tympanic perforation, then MEBO patch was applied on the tympanic membrane.

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Results: Recoveries over 90%,the relative standard deviation of sample (n=6) was 1.8% for dichloroacetic acid and 1.9% for trichloroacetic acid and the detection limit was 0.83 μg/L and 0.4 μg/L respectively.

结果：本法的加标回收率在90%以上，6份平行样品测定的相对标准偏差二氯乙酸为1.8%，三氯乙酸为1.9%，检出限依次为0.83μg/L和0.4μg/L。

The photocatalytic degradation of dichloroacetic acid and trichloroacetic acid solution with titanium dioxide(TiO_2) thin films is investigated in the paper.

用常压化学气相沉积法镀TiO2薄膜，以紫外灯为光源，对二氯乙酸和三氯乙酸溶液进行光催化降解，并证实了此过程符合一级反应动力学方程。

The investigation on the concentration of four haloacetic acid s during conventional water treatment process in waterworks and in drinking waters in North China showed that there were only dichloroacetic acids and trichloroacetic acids in waters,and the proportion of TCAA was from 52% to 90%.

对北方某自来水厂常规水处理过程及饮用水体中的4种卤乙酸质量浓度进行了调查，结果表明水体中只存在二氯乙酸和三氯乙酸，其中三氯乙酸所占比例较大，为52%~90%；常规水处理工艺对二氯乙酸有较为明显的去除效果，去除率在15%以上，而对三氯乙酸没有明显的去除效果，但总体而言其对卤乙酸有10%左右的去除率；预氯化对卤乙酸的产生起主导性作用，该处产生的卤乙酸占整个氯化过程产生的卤乙酸总量的60%以上，因此常规工艺有必要从预氯化工艺着手加以改进，来更好的控制卤乙酸的产生量。

This study developed a new method on the determination of carcinogenic disinfection by-products-trace dichloroacetic acid and trichloroacetic acid in tap water by ion chromatography-electrospray-tandem mass spectrometry(IC-ESI-MS/MS).

建立了一种采用离子色谱-串联电喷雾四级杆质谱联用技术检测自来水中可致癌的饮用水消毒副产物二氯乙酸和三氯乙酸的方法。

Good correlations were obtained between aromatic ring destruction and trichloroacetic acid , but dichloroacetic acid production were related to not only activated aromatic ring but also nitrogenous type structures such amino acid type structure.

从腐殖质的结构特性与卤乙酸的相关性分析，得出三氯乙酸的形成主要与腐殖质的芳香环的断裂有关。DCAA的形成则与腐殖质上芳香环和含氮官能团的多少有关。

DNA damage; chloridized disinfection by-products dichloroacetic acid; trichloroacetic acid; comet assay; RDPCR; p53 gene

DNA损伤；氯化消毒副产物；二氯乙酸；三氯乙酸；彗星试验；依赖随机化末端连接物PCR； p53基因

The methods of deprotein of ginger polysaccharide extract were compared among trichloroacetic acid method, digallic acid method and Sevag method.

以新鲜的生姜为试材，通过正交试验研究了生姜多糖的最佳提取方案，比较了三氯乙酸法、鞣酸法和Sevag法脱蛋白的效果。

Methods: Transfer the sample about 1ml, equvalent to about 2mg of Monoammonium Glycyrrhizinate, add 1 ml of 20% trichloroacetic acid using ethanol as the solvent, evaporate on a water bath to nearly dry, the residue appeares purple.

取本品1ml（约相当于甘草酸单铵2mg），加入20%三氯乙酸乙醇溶液1ml，置水浴蒸至近干，残留物显红紫色。

Results It has been shown that trichloroacetic acid was the better one as cross-link agent.

结果 三氯乙酸是较好的交联剂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。