1)Persistent halogenated hydrocarbons持久性卤代烃
1.The rapid economic development and urbanization combined with certain historical reasons have led to substantial accumulation of anthro-pogenic pollutants,such as persistent halogenated hydrocarbons and heavy metals,in the environment.飞速的经济发展、快速的城市化进程以及有机氯农药的历史使用等原因,使得广东省内环境介质受到持久性卤代烃和重金属污染,这些污染物最终主要通过食物影响到处于生物链终端的人类。
英文短句/例句
1.Persistent Halogenated Hydrocarbons in Typical Consumer Fish of South China and Human Exposure via Fish Consumption;中国南方典型食用鱼类中持久性卤代烃的浓度分布及人体暴露的初步研究
2.Persistent Halogenated Hydrocarbons in Multiple Environmental Samples from an Electronic Waste Recycling Facility in Eastern China and Human Exposures via Non-Dietary Intake废弃电子电器拆解地环境中持久性有毒卤代烃的分布特征及对人体暴露的评估
3.Chemical Characterization and Catalytic Hydrodehalogenation of Complex Persistent Polyhalogenated Organic Compounds;复杂持久性卤代有机物的化学表征及催化脱卤研究
4.The Harm of Acid Gases Caused by Fire-extinguishing Agent of Halogenated Hydrocarbon;卤代烃灭火剂产生酸性气体的毒害性
5.Quantitative structure-property relationship of halogenated arenes卤代芳烃的定量结构与性质相关性(QSPR)
6.Toxicity of Halogenated Aromatic Hydrocarbons to Scenedesmus Obliquus and the QSAR Study;卤代芳烃对斜生栅列藻的毒性及其QSAR研究
7.Analysis and Distribution of Volatile Halocarbons in the East China Sea and Yellow Sea;中国东海与黄海中挥发性卤代烃的分析与分布
8.Stereoselective Synthesis of β-Bromostyrene Derivatives and Its Applications;β-卤代烯烃衍生物的立体选择性合成及应用
9.A study of the pollution of the volatility alkyl halide in Zhenjiang drinking water;镇江市饮用水中挥发性卤代烃污染状况研究
10.Preliminary Studies on Five Kinds of Volatile Halocarbons in the Yellow Sea and the East China Sea黄海和东海五种挥发性卤代烃的初步研究
11.Determination of Volatile Halohydrocarbons in Drinking Water by Headspace Gas Chromatography饮用水中挥发性卤代烃的顶空气相色谱测定法
12.Palladium-catalyzed Domino Reaction of Halides with Dienes of Containing Active Acryl Group;钯催化含活性丙烯酰基的二烯烃与卤代烃的Domino环化反应研究
13.Water quality--Determination of volatile halogenated organic compounds--Headspace gas chromatographyGB/T17130-1997水质挥发性卤代烃的测定顶空气相色谱法
14.THE RELATIONSHIP BETWEEN A NOVEL TOPOLOGICAL INDEX ANDWATER SOLUBILITY,PARTITION COEFFICIENTSOF THE HALOGENTED AROMATICS;一个新的拓扑指数与卤代芳烃化合物溶解度及分配系数的相关性
15.Concentrations and Distributions of Volatile Halocarbons in the Surface Microlayer and Subsurface Water of the Yellow Sea黄海海水微表层和次表层中挥发性卤代烃的浓度和分布
16.Study on the analytical method of the volatile halohydrocarbons in soil of chemical industry zone and its application化工区土壤中挥发性卤代烃分析方法的建立及应用
17.GC-MS Determination of Volatile Halohydrocarbons and Chlorobenzenes in Water with Purge and Trap Concentrator吹扫捕集-气相色谱-质谱联用法测定水中挥发性卤代烃和氯苯
18.Determination of volatile halogenated hydrocarbons in drinking water by automatic headspace capillary gas chromatography自动顶空-气相色谱法测定饮用水中多种挥发性卤代烃
相关短句/例句
Volatile halogenated hydrocarbons挥发性卤代烃
1.The optimum conditions of determination of volatile halogenated hydrocarbons in water by purge-and-trap gas chromatography have been studied, by using HP-1 silicon melting capillary column with big-diameter and thick liquid membrane, 10 different volatile halogenated hydrocarbons were trapped by purge-and-trap method and determined by ECD.6 5 μm) ,ECD检测器 ,测定水中 10种挥发性卤代烃的方法 ,确定了最佳吹扫 捕集条件 。
2.Volatile halogenated hydrocarbons in drinking water were determined by headspace gas chromatography.[目的]建立顶空-毛细管气相色谱快速分析饮用水中多种挥发性卤代烃的方法。
3)volatile halohydrocarbon挥发性卤代烃
1.Determination of 7 volatile halohydrocarbon in water by capillary gas chromatography;毛细管气相色谱法同时测定水中的7种挥发性卤代烃
2.An analytical method of 9 kinds of volatile halohydrocarbonin water was established with GC-MSCoupled Purge-Trap.建立了吹扫捕集-GC/MS联用测定地表水中9种挥发性卤代烃的方法,方法检出限为0。
3.This paper described the efforts made to determine volatile halohydrocarbons and chlorobenzene simultaneously by purge and trap GC.6 5μm) ,ECD检测器 ,同时测定水中 8种挥发性卤代烃及氯代苯的方法 ,确定了最佳吹扫 捕集条件。
4)Inert aromatic halogen hydrocarbon惰性卤代芳烃
1.The Inert aromatic halogen hydrocarbon take the place of Grignard reagent reaction , because response initiate difficult in preparation, especially in the toluene solution, has influenced the industrialized application of this each .惰性卤代芳烃在格氏试剂反应中,由于反应引发困难,特别在甲苯溶液中制备尤为困难,影响了这类格氏试剂的应用。
5)Volatile halohydrocarbons挥发性卤代烃
1.Determination of volatile halohydrocarbons in water by purge and trap-gas chromatography;吹扫—捕集/气相色谱法测定水中挥发性卤代烃
2.Objective To develop a method for the determination of volatile halohydrocarbons in drinking water.目的建立饮用水中痕量挥发性卤代烃的分析方法,为饮用水中卤代烃检测提供依据。
3.By analyzing volatile halohydrocarbons in water sample,two pretreatment methods,continuous-flow liqulid-phase microextraction(CFME) and headspace(HS),are compared,and suitable conditions are optimised.用循环流动液相微萃取(CFME)和顶空法(HS)这两种预处理技术对水中挥发性卤代烃进行了分析和对比,并对影响CFME的因数进行了条件优化。
6)volatile halogenated hydrocarbon挥发性卤代烃
1.The method for determination of volatile halogenated hydrocarbon in the water by splitless GC was studied.采用大口径毛细管柱无分流/静态顶空自动进样法测定水中挥发性卤代烃。
延伸阅读
卤代烃卤代烃halohydrocarbon烃分子中的氢原子被卤素（氟、氯、溴、碘）取代后生成的化合物。命名根据取代卤素的不同，分别称为氟代烃、氯代烃、溴代烃和碘代烃；也可根据分子中卤素原子的多少分为一卤代烃、二卤代烃和多卤代烃；也可根据烃基的不同分为饱和卤代烃、不饱和卤代烃和芳香卤代烃等。此外，还可根据与卤原子直接相连碳原子的不同，分为一级卤代烃RCH2X、二级卤代烃R2CHX和三级卤代烃R3CX。性质基本上与烃相似，低级的是气体或液体，高级的是固体。它们的沸点随分子中碳原子和卤素原子数目的增加（氟代烃除外）和卤素原子序数的增大而升高。一氟代烃和一氯代烃一般比水轻，溴代烃、碘代烃及多卤代烃比水重。绝大多数卤代烃不溶于水或在水中溶解度很小，但能溶于很多有机溶剂，有些可以直接作为溶剂使用。卤代烃大都具有一种特殊气味，多卤代烃一般都难燃或不燃。卤代烃是一类重要的有机合成中间体，是许多有机合成的原料，它能发生许多化学反应，如取代反应、消除反应等。卤代烷中的卤素容易被—OH、—OR、—CN、NH3或H2NR取代，生成相应的醇、醚、腈、胺等化合物。碘代烷最容易发生取代反应，溴代烷次之，氯代烷又次之，芳基和乙烯基卤代物由于碳-卤键连接较为牢固，很难发生类似反应。卤代烃可以发生消除反应，在碱的作用下脱去卤化氢生成碳-碳双键或碳-碳叁键。邻二卤化合物除可以进行脱卤化氢的反应外，在锌粉（或镍粉）作用下还可发生脱卤反应生成烯烃。此外，某些卤代烃在强碱的作用下，能发生a-消除产生卡宾，例如氯仿与叔丁醇钾反应产生二氯卡宾。卤代烃能与某些金属作用生成金属有机化合物，例如与锂、镁等反应生成有机锂、有机镁化合物，它们都是有机合成中极重要的试剂，其中镁试剂称为格氏试剂RMgX。制法简单的卤代烃，如氯（代）甲烷、二氯甲烷等多是在高温或光照条件下由烷烃直接卤化制得。结构复杂的卤代烃则多由相应的醇和不饱和烃制得。应用许多卤代烃可用作灭火剂（如四氯化碳）、制冷剂（如氟利昂）、麻醉剂（如氯仿，现已不使用）、杀虫剂（如六六六，已禁用），以及高分子合成的原料（如氯乙烯、四氟乙烯）。毒性卤素是强毒性基，卤代烃一般比母体烃类的毒性大。卤代烃经皮肤吸收后，侵犯神经中枢或作用于内脏器官，引起中毒。一般，碘代烃毒性最大，溴代烃、氯代烃、氟代烃毒性依次降低。
