摘要
14C-尿素呼气试验(14C-UBT)具有无创伤、无痛苦、无交叉感染的优点。本工作对14C-UBT向环境释放14C的活度与天然宇生14C和各种其他人工活动向环境释放14C的活度进行比较。假设每年实施1000万次27.75kBq的14C-UBT,且永久使用的极端情况下,14C-UBT每年对地球环境释放14C的量与天然宇生14C的年产量相比仅占其0.028%,其带给公众的年有效剂量极限高值仅为3.33×10-3μSv,即14C-UBT对环境的影响极小。
^(14)C-urea breath test(^(14)C-UBT) is introduced briefly, which shows that ^(14)C-UBT is a excellent noninvasive method for detecting helicobacter pylori(HP) with safety, simplicity, and speed. The amount of ^(14)C released to environment by practising ^(14)C-UBT is much less than that of (^(14)C) in environment from both natural and artificial sources. The ^(14)C released by ^(14)C-UBT with 27.75 kBq each time and 10~7 times per year is only 0.028% of ^(14)C generated from natural sources per year, if this quantity of ^(14)C-UBT is used per year for ever, it brings an individual person to bear an extra effective radiation dosage of 3.33×10^(-3) μSv. So the influence of ^(14)C-UBT on environment could be neglectible.
出处
《同位素》
CAS
2004年第2期117-121,共5页
Journal of Isotopes
基金
国家科技部中小企业科技创新基金资助项目(OOC26214420391)
