查询词典 p-dimethylaminoazo-benzene

The average recoveries of benzene, toluene,-xylenes, o-xylene are from 97.21% to 103.10% and the RSDs are from 0.12% to 0.95%. And the average recoveries of Phthalic acid ester are from 96.01% to 102.02% and the RSDs are from 0.92% to 2.46%.

2采用PTFE膜过滤前处理法，首次建立了涂料中苯系物和邻苯二甲酸酯类环境激素的同时测定方法，并对分析方法作了准确度、精密度以及实验室间验证。

Levels of benzene, toluene, ethylbenzene and the xylenes in different indoor microenvironments such as shopping centers, super markets, cinemas and station waiting rooms were investigated in Hangzhou.

分析评价了杭州市商场、超市、影院、车站候车室等公共场所室内空气中BTEX的污染特征、来源及健康风险。

Benzene, toluene, ethylbenzene, xylenes isomers and methyl tert-butyl ether exist widely in the groundwater contaminated by gasoline.

中文摘要苯、甲苯、乙苯、对二甲苯与甲基第三丁基醚(methyl tert-butyl ether，简称MTBE)普遍存在汽油污染的地下水中。

A series of three factors-three level orthogonal experiments were performed to investigate anaerobic biodegradation performance of BTEX （benzene, toluene, ethlybenzene and xylenes ）including three types of bacteria;nitrate, sulfate and ferric iron reducing conditions;20 mg·L^-1, 50 mg·L^-1 and 80 mg·L^-1 substrates concentration levels.

采用正交试验法对BTEX各个组分在不同菌种、不同电子受体和污染物不同起始浓度的条件下生物厌氧降解效率进行研究。

The compounds monitored for this purpose are petroleum hydrocarbons such as benzene, Toluene and Xylenes.

里面含有苯，甲苯，二甲苯。

The columns exhibited good separation ability for disubstituted benzene isomers, especially for xylenes and cresols. In addition, the three peralkylated-β-CD columns offer better selectivity than the (2,6-di-O-benzyl)-β-CD column.

同一根柱不同次进样和不同柱之间表现出良好的重复性，保留时间的相对标准偏差小于8.5%；对使用大约40次后的溶胶-凝胶柱重新进行测试，柱效下降不明显，说明该类色谱柱的稳定性良好。

As examples, the fungus degrades benzene, toluene, ethylbenzene, and xylenes (the so-called BTEX compounds), chlorinated compounds such as 2,4,5trichloroe- thylene, and trichlorophenols.

例如，这种真菌降解苯、甲苯、乙苯、和二甲苯，氯化物如2，4，5一三氯乙烯，三氯苯酚。

This research discussed the treatment of the Fenton's agent of the in-situ chemical oxidation on contaminated groundwater polluted by benzene, toluene, ethylbenzene, and xylenes released from gasoline. The above treatment was evaluated by virtue of the literature review, principle of remediation, removal efficiency, real remediation cases and cost in order to clearly understand its merit, constraints, the best way to implement and to provide the domestic practitioners for assessing the remediation technique considering the economic benefit and the remediation schedule.

中文摘要本研究探讨以现地化学氧化法(in-situ chemical oxidation， ISCO)之Fenton's试剂处理汽油中苯、甲苯、乙苯、二甲苯(benzene、toluene、ethylbenzene、xylenes，BTEX)污染地下水之实际案例，经由相关文献资料、整治原理、去除效率、现场整治案例成效及成本等进行评析，以更清楚掌握其优点、限制及最佳之施用方法，做为国内相关人员在经济效益及污染整治时程上考量，评估该污染整治操作技术之应用参考。

Under the same conditions, activity of thiolphenol is much lower than that of thiols. An electron withdrawing group on the benzene ring can decrease the reaction activity, but an electron donating group on the aliphatic compound can increase it.

在相同的反应条件下，苯硫酚的反应活性明显低于硫醇的反应活性；巯基化合物中吸电子基团会使反应活性降低，而推电子基团会使反应活性提高。

Arylselenoureas with electron donor group on benzene ringreacted with excess sulfinyl chloride to give 2-aminobenzosele-nazoles.

苯环上有给电子基的N-芳基硒脲在过量的氯化亚砜中自动氧化合环生成2-氨基取代笨并硒唑。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。