三氯甲烷

The oily substances and the acidic components were characterized using elementary analysis, IR spectral analyses and acidimetry.

采用石油醚和三氯甲烷分级萃取孤岛油田含聚污水中的油分，得到两个不同极性的组分F1和F2；用碱抽提法从酸值较高的F2组分中分离酸性物质并将其甲酯化，通过柱层析法将甲酯化物分成Ⅰ、Ⅱ和Ⅲ三个甲酯组分。

The fat was then dissolved in chloroform and an aliquot corresponding to 100 mg fat was dried under a nitrogen stream in a test-tube.

油脂在三氯甲烷然后被溶化了，并且一个整除数与100毫克油脂相应在测试管被烘干了在氮气小河之下。

A method for determination of basic nitrogen-containing compounds in mainstream smoke was established. In the condition of basic substance barium hydroxide powder and extractant chloroform, 18 basic nitrogen-containing compounds were analyzed by gas chromatography-selective ion monitored-mass spectrometry, such as pyridine, 2-methylpyridine, 2-methylpyrazine, quinoline and indole, etc.

在氢氧化钡碱性环境中，以三氯甲烷为萃取剂，采用气相色谱－选择离子监测－质谱法测定吡啶、2-甲基吡啶、2-甲基吡嗪、喹啉、吲哚等18种碱性含氮化合物。

Results: The detection limites of chloroform, bromodichloromethan, dibromochloromethane and bromoform were blow 1μg/ml.

结果：三氯甲烷、一溴二氯甲烷、二溴一氯甲烷和溴仿最低检出浓度＜1μg/L。

The reduction of trihalomethane formation potential was discussed, which indicated that ozonation has a good removal for chlorofom and bromodichloromethane formation potential, but for dibromochloromethane formation potential the removal efficiency was undesirable and there was almost no removal for bromoform forming potential, Furthermore, when there was enough bromide in water, ozonation would have a promotion effect for bromoform formation potential.

通过研究臭氧对三卤甲烷生成潜能的去除规律发现，臭氧对三氯甲烷和二氯一溴甲烷生成潜能都有很好的去除，对一氯二溴甲烷生成潜能的去除效果较差，对溴仿生成潜能基本没有去除。当水中溴化物含量较高时臭氧对溴仿的生成反而具有促进作用。

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。

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

While the temperature ranged from 25 ℃ to 45 ℃, the removal efficiencies of the chloroform in the composite wastewater was only between 60% and 85%, while the tetrachloromethane removal efficiencies was 90%. After zero-valent iron dechlorination, the calcium carbide residue was applied for neutralization.

在此条件下，温度范围为25℃—45℃，单组分模拟废水—三氯甲烷的去除率为60%—85%，双组分模拟废水—三氯甲烷的去除率为75%，四氯化碳的去除率为90%。

Taking into account the actual situation of the waterworks production,two suggestions were proposed for reducing the formation of trichloromethane one was optimizing the pre-treatment chlorine adding methed and selected a suitable point for chlorine adding;and the other one was improving the effic.

通过分析某水厂水处理过程各阶段水样中的三氯甲烷生成情况，讨论常规水处理对三氯甲烷生成的影响，并结合该厂的生产实际，提出水处理过程中降低三氯甲烷生成的建议：一是优化前加氯投加方式，选择合适的加氯点；二是提高原水浊度的去除率，减少消毒副产物的前驱物质。

Results All the three poisoned patients were from the watch assembling workshop; the concentration of bond trichloromethane used in the production process was 90.6%; all the patients had obvious poisoning symptoms and abnormal liver function; the province-level occupational disease prevention institution diagnosed the occupational tnchloromethane poisoning and occupational toxic liver disease, through liver protection and treatment, the patients were cured.

结果 3名患者均为钟表装配车间工人，生产中所使用的黏合剂三氯甲烷含量为90.60%。患者均有明显中毒症状和肝功能指标异常。省级职防机构确诊职业性三氯甲烷中毒和职业性中毒性肝病，经护肝、对症治疗后痊愈。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新