| 查看: 1379 | 回复: 4 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
新建文本文档木虫 (正式写手)
|
[交流]
【分享】absorbant与adsorbant 区别 已有4人参与
|
||
|
最近我在写论文时候遇到2个单词：absorbant与adsorbant ，现在查找资料后发现其区别，供虫友学习。 What is the difference between adsorb and absorb? This question is familiar and important to me because I have taught surface chemistry to second year University students for many years, and I am always needing to stress the difference so that they get the terms right. In terms of Latin origins of prefixes, my dictionary tells me that ab- means "from" while ad means "to". That is where the two different words come from, but it does not help explain the differences in the meaning that scientists attach to the words. "Absorb" refers to a situation where something is taken into a medium, and disappears as a consequence (from?). "Adsorb" refers to a situation where something gets stuck onto (to?) the surface of a medium. We would use "absorb" for when light is absorbed by a coloured or opaque object, or for when water is soaked into a sponge, or even for when my students manage to "take in" some of what I am telling them. It is an ordinary English word. "Adsorb" is used for a very specific situation where molecules get stuck onto a surface. It does not occur as a word in ordinary language, outside its scientific meaning. Adsorption is very important, because many chemical reactions can go a lot faster when the reacting molecules are adsorbed at a surface (reactions of hydrogen gas on the surface of nickel, for example), or chemical reactions can be prevented by the presence of a barricading adsorbed layer on the surface (aluminium failing to react with air, for example), or impurities can be removed from a solution by adsorbing them onto a finely divided solid (activated charcoal for decolorizing solutions, or for medicinal use, for example). |
回复此楼» 猜你喜欢
请问哪里可以代烧带压力的炉子？
已经有6人回复
-
关于合成MIL-125的求助
已经有0人回复
-
物理化学论文润色/翻译怎么收费?
已经有64人回复
-
双非本硕光催化方向想读博，请各位老师看看我！
已经有2人回复
-
瑞典林雪平大学范立洲课题组现招聘博士后、岗位制博士生
已经有0人回复
-
中国科大仿生界面材料科学全国重点实验室戴懿涛研究员/江雷院士团队招聘科研助理
已经有0人回复
-
中国科大仿生界面材料科学全国重点实验室戴懿涛研究员/江雷院士团队招聘科研助理
已经有0人回复
-
寻求物理化学学报最新的投稿模板！
已经有4人回复
-
东南大学杰青/海优团队招聘催化方向博士后
已经有866人回复
-
投稿咨询
已经有7人回复
-
自科面上 散金币 祈福
已经有61人回复
» 本主题相关价值贴推荐，对您同样有帮助:
- 【讨论】瑞士和意大利科学家开发出新奇有机金属燃料电池
已经有0人回复
- 【分享】瑞士和意大利科学家开发出新奇有机金属燃料电池
已经有1人回复
- 【资源】2010年英语专业四级、八级单词全概括下载
已经有1人回复
- 【分享】英文翻译&写作第一反应词替换表（word版）
已经有3人回复
4楼2010-12-07 09:27:39
xuanyuan0825
新虫 (初入文坛)
- 应助: 0 (幼儿园)
- 金币: 53.8
- 红花: 1
- 帖子: 30
- 在线: 8.1小时
- 虫号: 1018877
- 注册: 2010-05-15
- 专业: 化学反应工程
2楼2010-12-05 09:08:13
|
本帖内容被屏蔽 |
3楼2010-12-05 16:00:23
尼可儿1989
金虫 (小有名气)
- 应助: 3 (幼儿园)
- 金币: 1516.8
- 散金: 91
- 红花: 2
- 帖子: 151
- 在线: 72.9小时
- 虫号: 1297170
- 注册: 2011-05-16
- 性别: MM
- 专业: 生物医用高分子材料
5楼2013-04-02 10:05:34
40