对苯二甲酸

The control of the aging condition, the transient liquid- solid separation of aging slurries, and the analysis of the particle size distribution of CTA and the micro concentration determination of the impurity 4- CBA.

粗对苯二甲酸的高温熟化是一个复杂过程，动力学实验研究的难点在于3个方面，即反应条件的控制，熟化浆料在高温高压下的液固瞬间分离取样与样品的分析测试。

PTA namely choice is right benzene 2 formic acid, it is the important raw material of chemical fibber industry.

PTA即精对苯二甲酸，是化纤工业的重要原料。

There six chapters in this dissertation: the overview on the study of probing for reactive oxygen species, spin-labelled fluorophore as probe for free radicals, Fe -EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability, study of fluorimetric method for the determination of peroxynitrite, study of spiro-formed rhodamine B hydrazide as a novel fluorescent probe in analytical chemistry, the conclusion and prospect of the present research work.

本论文分六章，包括生物活性氧表征的研究进展、自旋标记荧光探针表征自由基的研究、利用Fe-EDTA引发对苯二甲酸芳环羟基化反应评价抗氧化剂清除羟基自由基能力的研究、荧光法表征过氧亚硝酸根的研究、螺环型罗丹明B酰肼化合物作为新型荧光探针的性质及应用的研究、结论与展望。

Terephthalic acid ; hydrogenator ; stress corrosion cracking ; alkaline washing ; catalyst ; safety analysis

对苯二甲酸；加氢反应器；应力腐蚀开裂；碱洗；催化剂；安全分析

The stress corrosion cracking experiments were conducted using SUS 304 L stainless steel WOL samples in 3.0% NaOH solution by mass fraction at 280℃in order to study the anti-stress corrosion performance of PD-201 hydrogenator made of SUS 304 L stainless steel of purified terephthalic acidplant during alkaline washing without stopping production.

通过用SUS304L不锈钢制作的楔形张开加载预裂纹试样，在280℃、质量分数为3.0%的NaOH溶液的条件下进行应力腐蚀试验，以模拟对苯二甲酸装置的加氢反应器PD-201不停车碱洗工作过程中SUS304L不锈钢在该介质环境下的抗应力腐蚀性能。

In chapter 3, Fe-EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability was studied.

第三章利用Fe-EDTA引发对苯二甲酸芳环羟基化反应建立了一种评价抗氧化剂清除·OH能力的新型荧光分析法。

Paraxylene is a petrochemical used to make purified terephthalic acid, a raw material for producing polyester film, packaging resin and fabrics.

二甲苯是一种石化产品，用来制造精对苯二甲酸，原料生产聚酯薄膜，包装树脂和织物。

One mixed-ligand complex ofnH2Otpa=terephthalate, tripy=4'-(4methyoxyphenyl-2,2':6',2-terpyridine was synthesized and characterized by IR, elemental analysis and thermo-gravimetric analysis. The crystal structure of the product was established by single-crystal X-ray diffraction.

采用水热法合成了新的维链状锌的配位聚合物nH2O（tpa=对苯二甲酸，tripy=4'-（4-甲氧基苯基）－2，2'：6'，2-三联吡啶），通过红外光谱和元素分析对该配位聚合物进行了结构表征，用X射线单晶衍射测定了晶体结构。

By using model Caenorhabditis elegans, the toxicity of purified terephthalic acid wastewater was evaluated through a battery of biotest, including life span, days of 50% lethal, generation time, brood size, head thrashes, and body bends.

应用模式生物秀丽隐杆线虫，通过生命周期、半数致死天数、生殖速度、产卵数、头部摆动频率和身体弯曲次数等指标对精对苯二甲酸废水毒性进行了研究。

Asindicated by the formation of HOTA,the"OH"generated by the Fenton-type reactioncatalyzed by copper ion is different from that generated radiolytic,the former is ratherlocalized and therefore difficult to be scavenged by TA.

对铜催化的类Fenton反应的研究表明，类Fenton反应产生的&羟自由基&与水辐解产生的羟自由基不同，不能被对苯二甲酸全部清除。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新