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,247Please respect copyright.PENANAhQxpifzpxL
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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。247Please respect copyright.PENANAQCZgGlPoOT
247Please respect copyright.PENANAfAKl1PtDKg
地面核試,無疑會為大自然界帶來影響。247Please respect copyright.PENANAXYkRwFG1oA
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;247Please respect copyright.PENANAuR8Te42reP
亦即是說渡過30.2年之後,其濃度才會自然地減半。247Please respect copyright.PENANA7EKyH0x6Am
247Please respect copyright.PENANAcLR8HVm14n
247Please respect copyright.PENANAmq8kPdJC5t
(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。247Please respect copyright.PENANAezGWe2NTbk
247Please respect copyright.PENANAyPtQl91p9g
247Please respect copyright.PENANA3n5ZXiBunA
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。247Please respect copyright.PENANAmmfZj8sNZ0
247Please respect copyright.PENANA7GofZVbzgH
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。247Please respect copyright.PENANAFBeKRMPyxP
247Please respect copyright.PENANAT5b1K2wShx
247Please respect copyright.PENANA29EfAA4vs6
(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。247Please respect copyright.PENANAdwWZB31Cs5
247Please respect copyright.PENANABjr5FEw5M5
247Please respect copyright.PENANAA7WqeGliN6
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。247Please respect copyright.PENANAc1vUVEV4Dt
247Please respect copyright.PENANA2JSZCCKJVo
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。247Please respect copyright.PENANANofa7etgj5
247Please respect copyright.PENANAjmbq88zDjj
247Please respect copyright.PENANAkOyEP3EgpL
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。247Please respect copyright.PENANAXeqUrP524p
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247Please respect copyright.PENANAVOAe4pySE7
247Please respect copyright.PENANASLMGtrnprU
247Please respect copyright.PENANA3imPrpnCQx
247Please respect copyright.PENANAo7NUvmvDVh
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。247Please respect copyright.PENANAYzYdidVA4W
247Please respect copyright.PENANA66JFxSg2VX
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/toc247Please respect copyright.PENANApGujNkFKjW
247Please respect copyright.PENANA81dA0DIYxk
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。247Please respect copyright.PENANA6YGy4vPsku
247Please respect copyright.PENANAgQDckY85ZV
Link:247Please respect copyright.PENANA8ODa4tVpNC
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio247Please respect copyright.PENANAqU2tWk0y8P
247Please respect copyright.PENANAveRnZcXRIJ
247Please respect copyright.PENANAt3qGQ9pcj1
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。247Please respect copyright.PENANAwa7u5kW4nD
247Please respect copyright.PENANA2VhQeODire
Ref1:https://www.nature.com/articles/s41467-021-22081-8#MOESM3247Please respect copyright.PENANAI7yDgKX0rL
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #208
三十秒科學–1950年代地面核試對2020年的影響
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