第二次世界大戰後,美國、前蘇聯及其他國家在1951-1963年之間分別在地面上進行數以百計的核試,256Please respect copyright.PENANA8vCXd0wkQk
256Please respect copyright.PENANAlmpPDMZ4ym
256Please respect copyright.PENANAShvWa7PRSJ
直至1963年大家互相簽署了停止核試條約,地面引爆核試才得以終止進行;雖然1960-1970年間中國及非洲仍有進行少量微型地面核試。256Please respect copyright.PENANAWbmR6eIz74
256Please respect copyright.PENANA2PBrYeOnpL
地面核試,無疑會為大自然界帶來影響。256Please respect copyright.PENANAjSz19oJ4f9
其中一隻名為137Cs的幅射性原子,不但能對生物帶來傷害,且具有水溶性特質,其半衰期亦達30.2年之多;256Please respect copyright.PENANAZ6gQ7lQxL7
亦即是說渡過30.2年之後,其濃度才會自然地減半。256Please respect copyright.PENANAu8QZr5bs5T
256Please respect copyright.PENANAdio99Q4w9C
256Please respect copyright.PENANAeudoNgEzKF
(圖2)植物普遍需要鉀元素(K)輔助生長,因此天生擁有相應的蛋白質負責吸取泥土的鉀元素。256Please respect copyright.PENANAqGo9zZ2iR8
256Please respect copyright.PENANAGvTxis6hpM
256Please respect copyright.PENANA0EwtcZ5yeL
然而基於137Cs與K的特質非常相似,植物不其然間亦會因而吸取了帶有幅射性的137Cs原子。256Please respect copyright.PENANAo4wqKw9Fk6
256Please respect copyright.PENANAFC3fcIRz3Q
如果往植物施上含鉀元素(K)或銨 (NH4)的肥料,均可大幅度減低植物吸取泥土間137Cs的效率。256Please respect copyright.PENANA2tuKFCGkJG
256Please respect copyright.PENANArc75YrTsiF
256Please respect copyright.PENANAZU7CVF9wNH
(圖3)科學家審視2017-2019年美國各地的蜜糖商品,發現122個樣本中並有68個樣本測量出137Cs的存在。256Please respect copyright.PENANAqsqY6seu9M
256Please respect copyright.PENANABsKCFKZU8A
256Please respect copyright.PENANAkPzX0UBsTg
不過其含量非常之低,平均僅約0.03Bq 137Cs kg−1,最高濃度的樣本為19Bq 137Cs kg−1,依然遠低於美國FDA制定的1200Bq 137Cs kg−1安全界線。256Please respect copyright.PENANADE5zrutpOh
256Please respect copyright.PENANADqMLth7f5x
研究還發現,當地蜜糖樣本是否含有137Cs原子,與當地泥土的137Cs含量並無任何關連。256Please respect copyright.PENANARHD7FT1kr3
256Please respect copyright.PENANACMJDH94FHv
256Please respect copyright.PENANAzbsa6ZVjb7
無論如何,核廢理的處理與人類生活健康的議題,均需密切關注,不容忽視。256Please respect copyright.PENANA5YLEdL8qRw
256Please respect copyright.PENANAv3dRY1OpZV
256Please respect copyright.PENANAmbZvHbJggQ
256Please respect copyright.PENANALPmIwSVEJB
256Please respect copyright.PENANA9cVXw9ArAM
256Please respect copyright.PENANAgDASPGGSNh
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。256Please respect copyright.PENANA9Y1vrfLt5B
256Please respect copyright.PENANAvGfmBwAssA
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc256Please respect copyright.PENANAY3T7PQJM3e
256Please respect copyright.PENANAJOzc6jvqqX
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。256Please respect copyright.PENANAjg4LNXBBBC
256Please respect copyright.PENANAkw92vAf6Fg
Link:256Please respect copyright.PENANAJ0I87QvxJu
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio256Please respect copyright.PENANAJbRHMEwx3Y
256Please respect copyright.PENANAMwWzLEdnrY
256Please respect copyright.PENANASohKZTQIy2
除非Facebook及IG重開侵侵的account,否則我的IG將不會再作更新,只會寄居本土LIHKG及Penana。256Please respect copyright.PENANACDoFb84Syl
256Please respect copyright.PENANAhmKwSNLMzl
Ref1:https://www.nature.com/articles/s41467-021-22081-8#MOESM3256Please respect copyright.PENANASPmTBszTm8