查询词典 trichloroethylene

Reaction mechanism for 11,1,2-tetrafluoroethane preparation is carried out through gas phase fluorination by hydrogen fluoride over chromium-magnesium fluorination catalysts with trichloroethylene as main materials and dynamics models are set up.

研究了以三氯乙烯为主要原料，在铬镁氟化催化剂存在下，用氟化氢气相氟化制备1，1，1，2-四氟乙烷的反应机理，建立了动力学模型。

In the best condition of headspace and chromatogram, the mensuration of aquatic trace volatile can get a satisfaction result such as chloroform , carbon tetrachloride , trichloroethylene and perchlorethylene, all relativity standard deviation RSD is less than 4%,all the correlation coefficient R is larger than 0.99, and the relative error is less than 3%.

在选择最佳的顶空和色谱条件下，测定水中痕量挥发物三氯甲烷，四氯化碳，三氯乙烯和四氯乙烯可获得令人满意的结果，相对标准偏差RSD均小于4%，相关系数R均大于0.99，相对误差小于3%。

These solvent vapor degreasers meet recentEPA and NESHAP guidelines for use with trichloroethylene and perchloroethylene.

这些溶剂汽油去污设备的达到了最近新出台的EPA和NESHAP对三氯乙烯和四氯乙烯的使用准则。

The detection limit was 10 times better than the conventional SPME method. Under the optimized analytical conditions, aqueous samples of trichloroethylene/perchloroethylene (20 μg/L) and benzene/toluene (10 μg/L) were analyzed. The δ13C fractionation compared to pure-phase and headspace analysis was less than 0.5‰.

在优化的条件下，对20 μg/L的三氯乙烯/四氯乙烯和10 μg/L的苯/甲苯水溶液进行了单体碳同位素分析，相比于纯溶剂碳同位素值，顶空同位素分析误差不超过0.5‰，而样本标准偏差为0.3‰。

Perchloroethylene ; trichloroethylene ; dichloroethylene ; vinyl chloride ; anaerobic digested sludge

中文关键字四氯乙烯；三氯乙烯；二氯乙烯；氯乙烯；生物还原脱氯反应；厌氧消化污泥

The measurement shows that 310.8 nm is the suitable wavelength for detection of trichloroethylene and 322.5 nm is the suitable wavelength for detection of tetrachloroethylene in this wavelength range.

研究表明，该波长范围内三氯乙烯的最佳检测波长为310.8 nm，四氯乙烯的最佳检测波长为322.5 nm。

The model preferably predicted the photocatalytic degradation of other compounds, such as trichloroethylene, tetrachloroethylene, p -di chlorobeneze and carbon tetrachloride.

模型较好地预测了其他化合物如三氯乙烯(TCE、四氯乙烯、对-二氯苯和四氯化碳的光催化降解。

Chlorinated hydrocarbons, such as dichloroethylene, trichloroethylene, tetrachloroethylene, and trichloroethane, are common contaminants found in soil and groundwater. Due to the characteristics of their toxicity, they are extremely harmful to human health and the environment.

含氯碳氢物(二氯乙烯、三氯乙烯、四氯乙烯、三氯乙烷等)是土壤及地下水污染场址中最常见的污染物，其具毒性之特性，对人体健康与环境危害甚钜。

Using poly (4-merhylpentene-l) as a membrane material and cyclohexane, irich-loroethylene, tetrachloroethylene, mixture of cyclohexane and trichloroethylene or tetrachloro-ethylene as solvents, the solution were cast to form homogeneous dense membranes, and the crystalline properties and surface morphology were investigated by DSC and TEM.

以聚4-甲基戊烯-1为膜材质，分别以环己烷、三氯乙烯、四氯乙烯、环己烷/三氯乙烯及环己烷/四氯乙烯为溶剂，研究了这些溶液浇铸膜的结晶性质和表面形态。结果表明，溶剂对PMP的相对溶解能力和挥发速度同所成膜内PMP的结晶形式和结晶度密切相关；不同溶剂体系的PMP溶液浇铸膜的表面形态也不尽相同。

To study the effects of trichloroethylene on DNA damage in rat hepatocytes and oxidative stress in rat liver tissue.

目的 研究三氯乙烯对大鼠肝细胞DNA损伤和肝组织氧化应激的作用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。