久久精品国产99久久丝袜,一边捏奶头一边啪高潮会怎么样,欧美黑人乱大交,学生无套内精做了一晚上

客戶咨詢熱線:
Technical articles技術(shù)文章
首頁 > 技術(shù)文章 >H-Cube 連續(xù)流動氫化儀在氘化反應(yīng)方面的應(yīng)用

H-Cube 連續(xù)流動氫化儀在氘化反應(yīng)方面的應(yīng)用

 更新時間:2012-06-25 點擊量:2191

INTRODUCTION
Deuterium-labeled compounds are widely used as research tools in chemistry. Their importance lies in a number of applications, such as:
• proving reaction mechanisms
• investigation of a compound’s pharmacokinetic properties
• internal standards in mass spectrometry
• compound structure determination in NMR spectroscopy.
Conventional techniques for the synthesis of deuterated compounds utilize D2 gas as a deuterium source. However, there are drawbacks to utilizing deuterium gas on a laboratory scale, such as the handling of the gas itself. Other methods have been employed to overcome this difficulty such as catalytic H–D exchange reactions between H2 and D2O. However, these methods are time consuming and do not produce high purity D2 and they also require high pressure, the use of a special catalyst, or an excess amount of a strong base or acid1.
The H-Cube® continuous flow system is capable of generating deuterium gas from the electrolysis of D2O, which is readily available in 99.98% purity and is easy to handle.

 

 



Official ThalesNano website: www.thalesnano.com
Official ThalesNano contact : flowchemistry@thalesnano.com

 

  

更多詳情,請培安公司:
:北京: 上海:  成都: 廣州:
: sales@pynnco.comwww.pynnco.com
精品性高朝久久久久久久| 国产av剧情md精品麻豆| 日本做受高潮好舒服视频| 性猛交xxxx乱大交派对| 国产一区二区三区乱码| 玩弄人妻少妇500系列网址| 强开美妇后菊哀嚎哭叫视频| 精品国产乱码久久久久久免费 | あかねさす少女免费| 五月丁香欧美综合亚洲AV | 免费播放作爱视频| 性饥渴艳妇k8经典a片| 任我爽橹在线视频精欧美| 国产凸凹视频熟女a片| 搡老熟女国产| 久久久久亚洲av成人片乱码 | 国产999精品久久久久久| 裸体按摩xxxxx高清| 征服了同学的贵妇麻麻| 久久久久久精品免费免费999| 国产大片资源中文字幕| 久久婷五月丁香色啪网| 人妻偷人VA精品国产旡码| 4444亚洲人成无码网在线观看| 国产人妻精品一区二区三区| 人妻无码αv中文字幕久久琪琪布| 国产香蕉尹人视频在线| 午夜福利电影| 樱花草视频在线观看免费高清| JULIAANN熟女俱乐部| 玩弄放荡人妻少妇系列视频| 精品国产精品国产偷麻豆| 亚洲av无码乱码在线观看无码| 国产女人乱人伦精品一区二区| 极品美女扒开粉嫩小泬| 浴室里强摁做开腿呻吟的漫画| 韩国精品无码少妇在线观看| 亚洲精华国产精华液| 极品少妇高潮啪啪av无码吴梦梦 | 久久超碰97人人做人人爱| 亚洲成av人片在线观看无|