降解产物

But, because of the complexity of the dye molecule, there has been short of detailed comprehension in its photocatalytic degradation process. The key problem is difficult to detect the intermediates clearly. In this paper, the photocatalytic degradation of azo dye Congo red in water solution was investigated on UV irradiating TiO2 in the homemade reactor. The optimization conditions were determined and then the rate of decolorization, COD decrease, yield of CO2 and varies pH of aqueous solution during illumination were detected; The varies of the possible intermediates during degradation process were monitored with UV-VIS spectrum and HPLC. The possible mechanism of Congo red photocatalytic degradation is discussed combined with the data of MS.

本文选择有代表性的常见偶氮染料—刚果红作为研究对象，以自制TiO2为催化剂和小功率紫外灯为光源，在自制光反应器上确定了光催化降解的优化条件，并在这个优化条件下测定了降解过程中的脱色率、COD去除率和CO2生成量；利用数显酸度计、紫外可见分光光度计和高效液相色谱仪跟踪测定了降解过程中的可能产物，并结合质谱的数据初步探讨了刚果红的可能降解机制。

The role of IdaA in the EDTA degradation pathway was also studied. Since IDA oxidase also degraded EDDA relative efficiently, it may also be responsible for EDDA metabolism in EDTA degradation pathway.

另外一个重要发现是IDA氧化酶还可以高效利用EDTA的代谢中间产物EDDA作为底物，因此我们又对EDTA的部分降解途径进行了研究，结果显示EDTA降解菌BNC1中的IDA氧化酶可能非但负责IDA的降解，而极可能也催化EDDA的降解。

The results showed that the amorphous iron oxide has highly catalytic activity. The intermediate products are pyrocatechin, hydroquinone, benzoquinone and low-grade fatty acid. The mechanism of catalyst oxidation is assumed that the free radical OH attacks benzene cycle at the adjacent position and para-position of OH on phenol so that the benzene cycle is opened and low-grade fatty acid is produced and transformed into CO2 and H2O.

结果表明，非晶铁氧化物催化剂在催化氧化降解苯酚时具有较高的催化活性，苯酚降解的中间产物有：对苯二酚、邻苯二酚、苯醌和低级脂肪酸，其降解机理是羟基自由基攻击苯环上OH的部位或对位而使苯环开环，生成低级脂肪酸，并最终转化成二氧化碳和水，从而使苯酚得以降解。

ABAS could be decolored by extracellular composite enzymes secreted by Zoogloea HP3. The degradation place of o-pathalic acid was in-cell. Compared with the degradation of o-pathalic acid, the decoloring of ABAS controlled the degradation of ABAS.

动胶菌HP3分泌的胞外组成酶可使溴胺酸脱色，溴胺酸降解中间产物邻苯二甲酸的降解场所在胞内；与邻苯二甲酸的降解相比，溴胺酸的脱色是反应的控制步骤。

At present, MP and PNP degrading bacteria reported are mostly Pseudomonas sp., Flavobacterium, Alcaligenes sp. and so on. Furthermore, those strains can only degrade MP and PNP partially.

目前发现的MP和PNP降解菌主要有假单胞菌、黄杆菌、产碱菌等，而且大多只能部分降解MP和PNP，国内外尚未发现节杆菌对MP及其降解中间产物PNP的降解。

UV and SMPE-GC-MS results confirmed that radical-oxidation and hightemperature pyrogenation controlled the sonochemical-oxidation of toluene, and mainmiddle-products included benzaldehyde, bibenzyl, dibutyl phthalate, et al., final products werecarbon dioxide and water. The reactive violet K-3R was chosen as a model compound to study the effect ofsonoelectrochemical degradation of nonvolatile pollutant.

以超声与电化学作用处理活性紫K-3R水样，二者协同效应明显，5V槽电压时60min K-3R脱色效率要比纯电场作用时高57.8％，纯超声场对活性紫基本无显著的降解作用，初始浓度、pH对超声电化学协同降解影响较大，实验建立了活性紫降解的动力学模型，经超声电化学处理后，K-3R共轭发色体系已基本被破坏，但溶液中仍有苯环等产物。

Results of the product analyses indicated that most of dye molecules could be facultatively broken down into simple intermediates, which would be further degraded under subsequent aerobic condition.

产物分析结果表明：80.5%的母体染料大分子能在兼氧条件下降解成较为简单的中间产物，并且这些中间产物能在好氧条件下进一步矿化。

Those biodegradable materials finally form into CO2 and H2O via culture of tricarboxylic acid cycle, which can be excreted from lung, kidney, and skin. Hydroxyacetic acid is a metabolic product of amino acids. Therefore, velocity of bioldegradable materials can be controlled in vivo. The recent contraception focuses on discover a sustained release system of biodegradable materials.

生物可降解材料包括聚乳酸、聚ε-己内酯、乳酸-羟基乙酸共聚物等，这些材料有很好的生物相容性，植入体内后可经生物降解成乳酸单体，经三羧酸循环后最终成为CO2和H2O，经肺、肾、皮肤排泄，羟基乙酸也是机体氨基酸代谢产物，而且生物可将解材料在体内降解速度是可控的，用生物降解聚合物作为药物载体的缓释避孕系统是目前材料学以及避孕节育研究的一大重点。

Wood could be liquefied into soluble reactive intermediates, which could further reactedwith phenol or by themselves. Phenolation and recondensation were a pair of competingreactions. Decomposition, phenolation and recondensation dominated the whole liquefactiondynamic process and determined the structural characteristics of liquefied wood.

4木材组分在液化过程中逐渐分解为较小分子量的液化中间产物，这些中间产物的活性较高，可以继续与苯酚或互相之间发生酚化或再缩聚反应，酚化反应和再缩聚反应是一对互相竞争的反应，降解、酚化和再缩聚三种反应主宰着整个液化动力学过程，也决定着液化产物的结构特征。

The main structure of Phenolic resin curing is a three-dimensional network linked by methylene between phenols.It is shown in the process of thermal degradation that the thermal degradation of phenols and methylenes,and degradation product of gas small-molecule is a little;While the character of the epoxy resin molecule structure is that the milecule chains contain lively epoxy group,which can be at the end ,middle of the molecule or forms rings structure.

酚醛树脂固化物的主要结构为苯酚之间通过亚甲基连结的一种三维体型网络，因此在热降解过程中主要表现为酚基和亚甲基的热降解，降解后气态小分子产物很少；而环氧树脂的分子结构是以分子链中含有活泼的环氧基团为其特征，环氧基团可以位于分子链的末端、中间或成环状结构。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。