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氧-18

氧-18,18O, Ω[1]
基本
符號18O, Ω[1]
名稱氧-18、O, Ω[1]-18
原子序8
中子數10
CAS号14797-71-8  checkY
核素数据
豐度0.2%
自旋0
[[未知的元素“O, Ω[1]的同位素]]
完整核素表

氧-18,為同位素,有8個質子和10個中子,在氧化態為0時,則有8個電子豐度為大約0.21%,佔地殼含量約0.1%。

18
O
是生产氟代脱氧葡萄糖 (FDG) 的原料,后者可用于正电子发射计算机断层扫描 (PET)。 通常,在放射性药物工业中,使用回旋加速器线性粒子加速器英语Linear particle accelerator发射18 MeV 质子轰击富重氧水(H
2
18
O
,会生成氟-18。 然后将其合成为FDG,注入患者体内。 它和反应,形成极重水3
H
2
18
O
T
2
18
O
,分子量 24。极重水的密度比普通水大接近 30% 。[2]

18
O
的准确测量取决于正确的分析,样品制备和存储程序[3]

參見

參考來源

  1. ^ 存档副本 (PDF). [2017-08-22]. (原始内容存档 (PDF)于2015-09-23). 
  2. ^ Pauling, Linus. 12-7. Heavy Water. General Chemistry需要免费注册 3rd. Dover. 1988: 438. ISBN 978-0-486-65622-9. 
  3. ^ Tsang, Man-Yin; Yao, Weiqi; Tse, Kevin. Kim, Il-Nam , 编. Oxidized silver cups can skew oxygen isotope results of small samples. Experimental Results. 2020, 1: e12. ISSN 2516-712X. doi:10.1017/exp.2020.15可免费查阅 (英语). 


相邻较轻同位素:
氧-17
氧-18是
同位素
相邻较重同位素:
氧-19
母同位素
氮-18氮-19氟-18
氧-18的
衰變鏈
衰變產物
稳定

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