Establishment and application of gas chromatography method for determination of tetrachloroethylene in workplace air 作业场所空气中四氯乙烯气相色谱检测方法的建立与应用
Migration of adult worms may occur spontaneously or as a result of some stimulus such as fever or tetrachloroethylene. 成虫的移行可自然发生,或因一些刺激诸如发热或四氯乙烯而造成。
Enhanced Biodegradation Potential of Tetrachloroethylene under Natural Groundwater Environment 天然地下水环境四氯乙烯的强化生物降解玫瑰红,四碘四氯荧光素
The device can recycle and utilize the tetrachloroethylene steam distilled from the distilling box. 本实用新型可将蒸馏箱蒸馏出的四氯乙烯蒸汽回收利用。
For the existing methods, it had been suggested that tetrachloroethylene is one possible substitute of carbon tetrachloride which will be limited by international protocol at 2010. 对于现行方法使用的四氯化碳萃取剂在2010年被禁用的问题,提出了以四氯乙烯代替四氯化碳的建议。
Objective The carcinogenicity of tetrachloroethylene ( TCE), a dry-cleaning solvent, was explored quantitatively and qualitatively in order to assess extra risk on dry-cleaning workers exposed to TCE and develop a much valid health standard. 目的对干洗剂四氯乙烯(TCE)的致癌性作出定性定量的评价,以预测干洗店从业人员的终生患癌危险度,并为研制合理的四氯乙烯卫生标准提供依据。
Environmental impact assessment on present occupational health standard of tetrachloroethylene 现行四氯乙烯职业卫生标准的环境影响评价
An intermediate template route was developed to grow cubic silicon carbide(β― SiC) nanorods at relatively low temperature of 600~ 700 ℃ using tetrachloroethylene ( C_2Cl_4) and silicon tetrachloride ( SiCl_4) as carbon and silicon sources, respectively by a solvothermal method. 采用中间模板路线在600~700℃相对低的温度下,用四氯乙烯和四氯化硅作为原材料,用溶剂热的方法合成了立方相的碳化硅(β-SiC)纳米棒。
In order to improve the electrophoresis properties of the spherical SiO_2 particles in tetrachloroethylene, the prepared spherical sub-micron SiO_2 particles were modified by butanedioic acid. 采用丁二酸对球状亚微米级SiO2颗粒进行表面改性,以提高SiO2颗粒于四氯乙烯溶剂中的电泳性能,制备适于电子墨水用的白色电泳颗粒。
Addition of zinc stearate as ionic plasticizer reduced both mechanical properties and conductivity. The effects of leaching time a n d tetrachloroethylene on zinc leaching processes are described. 加入硬脂酸锌会降低复合物的电导率及力学性能。考察了浸出时间、四氯乙烯的加入对锌浸出的影响。
Study on organic sulfur removal from coal by copper chloride oxidation and tetrachloroethylene extraction 氯化铜-四氯乙烯复合脱除煤中有机硫的研究
Study on anaerobic biodegradation of tetrachloroethylene with different co-metabolism substrates 不同共代谢基质下四氯乙烯厌氧生物降解研究
Tetrachloroethylene ( PCE) is biodegraded by reductive dechlorination in anaerobic condition. 四氯乙烯(PCE)在厌氧条件下通过还原脱氯发生生物降解。
To Determine Trichloroethylene and Tetrachloroethylene in Air by Gas Chroma to graphy 气相色谱法测定空气中三氯乙烯和四氯乙烯
The effects of leaching temperature, liquid/ solid ratio and addition of tetrachloroethylene on the leaching of zinc were studied. 考察了浸出温度、液固比、四氯乙烯的加入对锌浸出的影响。
Feasibility Study on Substitution of Tetrachloromethane with Tetrachloroethylene 四氯乙烯替代四氯化碳作为油类萃取剂的研究
The Effects of Tetrachloroethylene in Leaching Sphalerite 四氯乙烯在锌精矿浸出中的作用研究
Development of Hygienic Inspect Method for Indoor Air Tetrachloroethylene 室内空气中四氯乙烯卫生检验标准方法的研制
Gas-liquid balance gas chromatography was introduced to measure the trichloroethylene and tetrachloroethylene in drinking water and source water. 本方法采用顶空气相色谱法测定生活饮用水及水源水中三氯乙烯、四氯乙烯。
Abstract Molybdenum ( IV) chloride with high purity was prepared by the photochemical reaction of tetrachloroethylene and molybdenum ( V) chloride in special reactor. 本文以四氯乙烯与五氯化钼为原料,在特制反应器内进行光化学反应,制得了高纯度四氯化钼。
Study on Tetrachloroethylene Degradation by Anaerobic Bacteria 厌氧菌降解四氯乙烯的研究
Electrophoretic microcapsules were prepared via in-situ interfacial polymerization using ureaformaldehyde ( UF) resin as the outer membrane and oil blue and TiO2 nanoparticles dispersed in tetrachloroethylene as core materials. 以尿素和甲醛为壁材,油性蓝和TiO2纳米粒子分散在四氯乙烯中作为囊芯,通过原位聚合法制备了蓝色电泳显示微胶囊。
A coupling model of leaching and separation of coordinated extraction for sphalerite with complex solvents composed of tetrachloroethylene ( C_2Cl_4), 2-ethylhexyl phosphate ( P204) and surfactant in oxidation reagents of H_2SO_4-HNO_3-O_2 was put forward. 提出了闪锌矿在H2SO4HNO3O2中的氧化浸出与以四氯乙烯和磷酸二(2乙基己基)酯组成的协同萃取3剂和表面活性剂的分离耦合操作模式。
Study on cultivation and acclimation of anaerobic sludge for tetrachloroethylene degradation 用于四氯乙烯降解的厌氧污泥的培养与驯化研究
Coupling Process of Zinc Concentrate Leaching in H_2SO_4-HNO_3 Medium and Sulphur Extracting with Tetrachloroethylene H2SO4-HNO3体系中锌精矿浸出与四氯乙烯萃硫的耦合
The TiO2/ ACF catalysts were characterized by BET, XRD, and SEM. The photodegradation activity of TiO2/ ACF was investigated using tetrachloroethylene ( TCE) as a probe molecule. 采用BET、XRD、SEM等手段对其物理化学特性进行表征,以四氯乙烯光降解反应为探针反应,考察了TiO2/ACF催化剂的光催化降解性能。
A preliminary study of anaerobic biodegradation of tetrachloroethylene with acetic acid as co-metabolism substrate 以醋酸为共代谢基质时四氯乙烯的生物降解初步研究
Meanwhile, Purification effect of tetrachloroethylene, IP, bacteria number, CO, CO 2 and reduction of negative ion with time was also assessed. 同时对干洗场所室内空气中四氯乙烯、IP、空气中细菌总数、CO、CO2的净化效果以及不同时间负离子衰减量进行了评价。