氯甲烷

However, the surplus residual chlorine can affect people's taste and smell, destroy the quality of water. Moreover, in the process of disinfection, chlorine can react with organic matter and produce a series of hydrochloric ether such as chloroform, bromoform, bromodichloromethane, chlorodibromomethane and so on, these matters can cause to some extent cancer to human body.

但是，水中过量的余氯会影响水的口感和气味，破坏水的品质；此外，在消毒过程中，氯与水中残余的有机物产生化学作用，生成一系列氯代烃如三氯甲烷、溴仿、溴二氯甲烷、氯二溴甲烷等，这些物质会对人体产生一定程度的致癌作用；对于以自然水源作为生活用水来源的城市必然要对水加氯消毒后才可使用。

Methods: The twelve volatile halogenated hydrocarbons (1, 1-dichloroethene, dicloromethane, trans-1, 2-dichloroethene, cis-1, 2-dichloroethene, chloroform-1, 1, 1-trichloroethane-1, 2-dichloroethane, tetrachloromethane, bromodichloromethane, dibromochloromethane, tetrachloroentene and bromoform) in drinking water were determined by headspace capillary gas chromatography.

采用顶空毛细管柱气相色谱法测定饮用水中1，1-二氯乙烯、二氯甲烷、反－1，2-二氯乙烯、顺－1，2-二氯乙烯、三氯甲烷、1，1，1-三氯乙烷、1，2-二氯乙烷、四氯化碳、一溴二氯甲烷、二溴一氯甲烷、四氯乙烯及三溴甲烷等12种挥发性卤代有机物。

A few years ago, while working at the Department of Agriculture and Food Science in Northern Ireland, we discovered that aging plants provide most of the chloromethane found in the atmosphere. Because methane, like chloromethane, is released during the burning of biomass, we wondered whether intact plants might also release methane.

氯甲烷是一种会破坏臭氧的氯化气体，过去认为主要来自於海洋与森林火灾；几年前，我们任职於北爱尔兰农业与食品科学部时，发现大气中存在的氯甲烷，大多是由腐朽的植物所排放，因为甲烷跟氯甲烷都是在生质燃烧期间释放出来的，於是我们想知道整株植物是否也可能释放甲烷。

The results indicated that: the water content of product decreased from 2580 PPm to 50 PPm by sweep gas method in the water/chloromethane system and the separation factor of water/chloromethane was 74800; the water content of product decreased from 2580 PPm to 36 PPm by vacuum method in the water/chloromethane system and the separation factor of water/chloromethane was 32500; the separation factor and the flux of the dehydration of dichloromethane were 39900 and 0.172 kg·m~(-2)·h~(-1),respectively; the separation factor and the flux of the dehydration of trichloromethane at 50℃were 57300 and 0.564 kg·m~(-2)·h~(-1), respectively; the separation factor and the flux of the dehydration of carbon tetrachloride at 60℃were 68200 and 0.612 kg·m~(-2)·h~(-1),respectively.

结果表明：利用吹扫气法，对于水/一氯甲烷操作体系，其分离因数高达74800，产品水含量由进料侧的2580 PPm，降低到50 PPm；利用抽真空法，对于水/一氯甲烷操作体系，其分离(来源：93ABC论9090文网www.abclunwen.com)因数高达32500，产品的水含量由进料侧的2580 PPm，降低到36 PPm；对于二氯甲烷脱水体系，水/二氯甲烷分离因数和渗透通量分别为39900和0.172 kg·m~(-2)·h~(-1)；对于氯仿脱水体系，操作温度为50℃时，水/氯仿分离因数和渗透通量分别为57300和0.564 kg·m~(-2)·h~(-1)；对于四氯化碳脱水体系，操作温度为60℃，水/四氯化碳分离因数和渗透通量分别为68200和0.612 kg·m~(-2)·h~(-1)。

Methane chloridate , general name of monochloro methane , dichloro methane , trifluoro methane and tetra chloromethane mainly composed of natural gas and liquefied chlorine gas , can not only be used as solvent , degreasant , decolourant , aerosol , freezing medium and detoxicator , etc .but also the raw material for the production of medicine , pesticide , organic ailicon and organ fluorine , etc.

甲烷氯化物是包括一氯甲烷、二氯甲烷、三氯甲烷、四氯化碳四种产品的总称。甲烷氯化物除可作为溶剂、脱脂剂、漂白剂、氯雾剂、制冷剂、灭火剂、麻醉剂等以外，还是生产医药、农药、有机硅和有机氟系列产品等原料。

In recent years, the demand growth rate of methane chloridate beyond the production growth rate in domestic market, there are more than 10 methyl chloride factories in our country, with the general production capability about 70 thousand tons, but the consumption is near about 80 thousand tons, the domestic market demand of monochloro methane reached 120—140 thousand tons in 2006, but the monochloro methane production capability just only 80-100 thousand tons.

近几年，国内市场对甲烷氯化物产品的需求增长速度大大快于生产增长的速度，我国现有氯甲烷生产厂10多家，总生产能力约7万吨，消费量近8万吨，到2006年国内对一氯甲烷的总需求量达到12-14万吨，而时国内一氯甲烷的生产能力8-10万吨。

Methane chloridate is a kind of chemical product including monochloro methane, dichloro methane, trifluoro methane, tetrachloromethane.

项目内容：甲烷氯化物是包括一氯甲烷、二氯甲烷、三氯甲烷、四氯化碳四种C1氯烃氯产品的总称，是氯碱工业后加工的一个重要有机耗氯产品。

From the development of methane chloridate production, the early methane chloridate were mainly produced by methane chlorination, with the rapid development of methanol industry, the advantage of methanol hydrochlorinate become clearer and clearer and the methanol hydrochlorinate will take the place of methane chlorination in the world.

甲醇氢氯化法包括甲醇氢氯化反应生成一氯甲烷和一氯甲烷氯化生成多氯甲烷两步。按国外先进水平，该法甲醇总收率可达97.7％，氯总收率可达98.6％。从世界甲烷氯化物生产的发展来看，早期的甲烷氯化物生产是以甲烷热氯化法为主。

Production processes of chlorinated methanes including monochloromethane , dichloromethane ,trichloromethane and carbon tetrachloride at home and abroad are introduced.

介绍了甲烷氯化物(一氯甲烷、二氯甲烷、三氯甲烷、四氯化碳)的国内外生产方法，认为我国应尽快发展规模化经济，加速四氯化碳向二氯甲烷、三氯甲烷的工艺转换，开发更多的甲烷氯化物衍生

Waste oil category: Waste oil, waste hydraulic oil, waste oil, waste oil injection, waste kerosene, waste of white mineral oil, white waste oil, waste oil sparks, the repeal of toluene, waste cutting oil, gear oil, lubricants, batteries oil, spindle oil, zorra, oil, turpentine oil, solvent oil, gear oil, oil rails; waste chemical categories: one, the repeal of toluene, xylene waste, spent 2 pure benzene, acetone waste, waste Ding ketone, cyclohexanone 3 waste, waste dichloromethane, dichloroethane waste, waste Dichloropropane 4, solvent categories: soluble oil 6 #, 120 # dissolving agents, dissolving agents 200 # 5, trichloro ethylene, dichloromethane, trichloroethane; tetrachlorethylene, trichloromethane 6, the repeal of methanol, ethanol, waste, waste alcohol, isopropyl alcohol waste 7, the repeal of ethylene glycol, diethylene glycol waste, spent three 8 glycol, waste butyl acetate, ethyl acetate wastewater, waste acetate 9, the repeal of ethyl ether, acetonitrile waste, waste petroleum ether 10, cleaning categories: cleaning agent, washing machine water, days that water; wash board water,×oil wastewater liquid 11, the supply of tires category: special supply of fuel oil, non-standard oil, burner oil, waste oil and other refined crude oil.

废油类：废机油，废液压油，废柴油，废注塑机油，废煤油，废白矿油，废白电油，废火花机油，废甲苯，废切削油，齿轮油，润滑油，废电池机油，锭子油，索拉油，松节油，溶剂油，齿轮油，导轨油等；废化工类：1、废甲苯、废二甲苯、废纯苯2、废丙酮、废丁酮、废环已酮3、废二氯甲烷、废二氯乙烷、废二氯丙烷4、溶剂类： 6#溶油剂， 120#溶油剂， 200#溶油剂5、三氯乙烯，二氯甲烷，三氯乙烷；四氯乙烯，三氯甲烷6、废甲醇、废乙醇、废丁醇、废异丙醇7、废乙二醇、废二甘醇、废三甘醇8、废醋酸丁酯、废醋酸乙酯、废醋酸甲酯9、废乙醚、废乙腈、废石油醚10、清洗类：清洗剂，洗机水，天那水；洗板水，去渍油等废液废水11、废轮胎类供应：特价供应燃料油，非标油，烧火油，废油提练的原油等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。