爱词霸英语   汉语   手机版   软件版下载 | English
每日一句:正在加载...
1.ADSORPTION FROM SOLUTION Ⅻ. THERMODYNAMIC STUDY OF ADSORPTION OF AROMATIC COMPOUNDS FROM WATER ONTO ACTIVATED CARBON
自溶液中的吸附——Ⅻ.活性炭自中吸附芳香化合物的热力学研究收藏指正
2.Determination of 16 Polycyclic Aromatic Hydrocarbons by Liquid Chromatography with Solid Phase Extraction(II)——Determination of US Environmental Protection Agency 16 Polycyclic Aromatic Hydrocarbons in Water
固相萃取液相色谱测定中16个多环芳烃(II)——中USEPA16个多环芳烃的测定收藏指正
3.1,2,4-trihydroxybenzene was used as starting material,which was commercially available. By using a mixture of aromatic hydrocarbon and water as abinary solvent,reaction of 1,2,4-trihydroxybenzene with butyricanhydride was carried out in the presence of a catalyst(ZnCl2,AlCl3 or SOCl2). 2,4,5-trihydroxybutyrophenone was obtained in yields of 80~86% with the advantages of easy control,stable yield,high product quality and low cost.
结果表明,以1,2,4-三羟基苯为起始原料,在惰性气体保护和催化剂AlCl3的存在下,在芳香烃与组成的二元混合溶剂中,与丁酸酐反应,经过芳香烃溶剂的后处理,可以得到2,4,5-三羟基苯丁酮(THBP),产率最高达86%,该方法的优点在于原料易得,操作条件简单,易于控制,收率稳定,产品质量高,成本低。收藏指正
4.A sweetened aromatic solution of alcohol and water, serving as a vehicle for medicine
甘香洒剂一种甜的芳香的酒精与的溶液,用作药物的赋形剂收藏指正
5.The enrichment and analysis method of trace organic matter in formation water are briefly introduced in this article. Making use of the geochemical data of saturated and aromatic hydrocarbons from 9 water samples (including 8 drilling well formation water and 1 fountain water ), combined with the general analysis on formation water (abiochemistry and isotopes of δDδ~(18)O), we discuss the different conservation condition in the two areas.
该文简要介绍了地层中微量有机质的富集、分析方法,并对川东区和川东北区8口钻井地层及诺地表泉中的有机质进行了富集分析,通过利用地层中饱和烃系列、芳烃系列在不同化学环境中的变化趋势,并结合前人地层化学常规分析和氢、氧同位素等资料,探讨了两区的保存条件。收藏指正
6.Polycyclic aromatic hydrocarbons(PAHs)in water were analyzed by solid phase microextraction-gas chromatography(SPMC-GC). The retention indexes of PAHs were determined using Lee retention index system under different operation conditions,including constant flow,constant pressure and ramped pressure.
利用固相微萃取技术-气相色谱法(SPME-GC)研究了多环芳烃(PAHs)的气相色谱保留行为特征.结果表明,在利用SPMC-GC分析PAH过程中,计算得的PAHs的Lee保留指数与传统的直接分析PAHs溶液所得的保留指数一致;收藏指正
7.Satisfactory results were obtained when this kind of device was used for monitoring organic pollutants, such as polychlorinated biphenyls (PCBs), organicchlorined pesticides (OCP) and polynuclear aromatic hydrocarbons (PAHs), in air, water, seawater and sediment.
将其用于监测大气、体、沉积物中的多氯联苯 (PCBs)、有机氯农药(OCP)和多环芳烃 (PAHs)时 ,结果满意。收藏指正
8.This study researched contamination of Polycyclic Aromatic Hydrocarbonsin in Henan source water. As a result the contamination are ubiquitous and the primary contamination are Naphthalene, Anthracene, Phenanthrene, Pyrene, Fluoranthene, Flourene and Benz (a) pyrene . The Benz (a) pyrene overtop the standard limit once in a way.
南省主要城市饮用中多环芳烃的污染状况进行了初步研究 ,结果表明 ,南省主要城市饮用普遍受到多环芳烃的污染 ,主要污染因子为萘、蒽、菲、芘、荧蒽、芴以及强致癌性物质苯并 (a)芘 ,而且苯并 (a)芘有超标情况出现收藏指正
9.Resistant to salt water. Limited resistance to aromatic hydrocarbon including some types of gasoline.
耐海,但对芳香烃物质(包括汽油类)耐度有限。收藏指正
10.Many organic pollutants including trichloroethylene (TCE), polycyclic aromatic hydrocarbons (PAHs), 2,4,6-trinitrotoluene (TNT) and pesticides resided in the soil, water and air, resulting in the large environment pollution.
多环芳香烃(PAHs),三硝基甲苯(TNT)和有机农药等有机物残留在土壤,体和大气中,造成了严重的环境污染。收藏指正
尝试查询
汉英释义