...Tracers used in the fields of chemistry and biochemistry require that atoms at specific positions in a compound are partially or completely replaced with a radioisotope, and are called radioisotope-labeled compounds. There are also stable isotope-labeled compounds in which atoms are replaced with stable isotopes such as deuterium, and both are collectively called labeled compounds. Radioisotope-labeled compounds often have problems in use if they contain even trace amounts of impurities including radioisotopes, so they are required to be radiochemically highly pure. ... *Some of the terminology that refers to "stable isotope-labeled compounds" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…化学や生化学の分野で使われるトレーサーは,ある化合物中の決まった位置の原子がその放射性同位体で一部または全部置き換わっていることが必要であり,これを放射性同位体標識化合物という。重水素など安定同位体で置き換わった安定同位体標識化合物もあり,両者を合わせて標識化合物という。放射性同位体標識化合物は放射性同位体を含む不純物がごく微量でも含まれていると使用上支障をきたすことが多く,放射化学的に高純度であることが要求される。… ※「安定同位体標識化合物」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
A lagoon in Komatsu City, Ishikawa Prefecture. It...
Diplomat. Born in Niigata Prefecture. Son-in-law ...
One of the three inhabitant groups of Gaul describ...
〘noun〙① The seas on all four sides. Yomonoumi. ※Su...
〘 noun 〙① To be born late. Also, to grow up later ...
Pathologist. Born in Daishoji, Kaga Province (Kag...
…Their diet consists mainly of aquatic invertebra...
In 1873, he became professor at the University of...
It is said to be the oldest historical novel in C...
...The word derives from the Latin occultum (mean...
...A small kingdom of the Sotho (Basuto) people i...
Infrared astronomical satellite . An astronomical ...
A seaweed of the Rhodophyta family, the Cercidiph...
〘noun〙 A mutual aid association operated as a busi...
…The mouth is connected to a digestive tract, but...