稀土泛指17種特性相似的金屬,較常用在作醫療設備之上,其中一種 (Promethium, Pm)為具放射性的物質。702Please respect copyright.PENANArnKVu2vMRh
702Please respect copyright.PENANAfTbH08eg9f702Please respect copyright.PENANAfBjkRAo07i
702Please respect copyright.PENANAsfRKSEgQNO
雖然它們被稱為稀土,但事實上它們並不真的是如此稀有。702Please respect copyright.PENANAtP8aVE3FW7
圖1圖中的圓點為各種稀土金屬蘊藏量,大部份與錫的含量相約,且遠高於大自然間的水銀含量。702Please respect copyright.PENANAWTN3BOJ3zR
702Please respect copyright.PENANA8HUeU1lvdM
(圖2)近日有科學家發表文章(Ref2),從需要攝取稀土金屬才能運作的細菌中抽取一種名為Lanmodulin的蛋白質。702Please respect copyright.PENANAzrfobhTV4W
702Please respect copyright.PENANAHsK2UUwDBs702Please respect copyright.PENANAcgqtSks5HO
702Please respect copyright.PENANAWVUEeUa55h
這蛋白質有三大特性,702Please respect copyright.PENANAunT9qKum0z
1.能夠選擇性地黏上稀土金屬,不會黏上銅鋅鎂等非稀土金屬。702Please respect copyright.PENANA69F2wKZx2E
702Please respect copyright.PENANAQ8AeXObD97
2.攝氏95度下仍然正常運作。702Please respect copyright.PENANAikKGBPfCWn
702Please respect copyright.PENANARfjDpkFsZQ
3.pH2.5酸性環境仍能正常運作。702Please respect copyright.PENANAqQdwBhskmw
702Please respect copyright.PENANA5PS54JaQWz
對比常用的一種金屬提取物質EDTA,Lanmodulin不但之對稀土金屬更具選擇性,而且親和力更高出5-10倍或以上。702Please respect copyright.PENANAdOWl48X8AB
702Please respect copyright.PENANAC6qitusq6R
(圖3)電子廢物普遍會溶解在pH3.0的酸性環境使金屬呈離子狀態,有著Lanmodulin的幫助下,舊有的繁複及高能源消耗的提取稀土金屬辦法亦將能逐漸退出市場,各國亦能更有效從各電子儀器中回收稀土金屬,再進一步減少對中國的依賴。702Please respect copyright.PENANAQZ0D6P9euM
702Please respect copyright.PENANAiNEr0tN7Lp702Please respect copyright.PENANA4aOSBUHMAZ
702Please respect copyright.PENANAQqhY88j9ed
702Please respect copyright.PENANA2Cn0tnPlec
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。702Please respect copyright.PENANAPEdWhmOHY4
702Please respect copyright.PENANAQ4Wp6UQXik
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/toc702Please respect copyright.PENANAndYAKQhtMk
702Please respect copyright.PENANAKxq1wSTp4H
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。702Please respect copyright.PENANANelgb96n3C
702Please respect copyright.PENANASL3wgjzVQE
Link:702Please respect copyright.PENANASLnE9Xsdl4
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio702Please respect copyright.PENANAYn4RvHeeJL
702Please respect copyright.PENANAAcV6L2cFqY
702Please respect copyright.PENANAiDbsYraRcj
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。702Please respect copyright.PENANAPk1NIMF1fn
702Please respect copyright.PENANA8fVmiPE4IK
702Please respect copyright.PENANAdzFk3GBN0I
Ref1:https://pubmed.ncbi.nlm.nih.gov/30705185/702Please respect copyright.PENANABke7sNhLC3
Ref2:https://pubs.acs.org/doi/10.1021/acs.inorgchem.0c01303702Please respect copyright.PENANAq2dZPwMIrQ
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作者:
薯仔聞茱莉

篇 #38
深入淺出–利用細菌蛋白質提取稀土金屬
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