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。720Please respect copyright.PENANAI5T3Leb0XV
720Please respect copyright.PENANArTR4XY1Tf7720Please respect copyright.PENANAdmOqL0l8jr
720Please respect copyright.PENANAL2ORt7DTyP
雖然它們被稱為稀土,但事實上它們並不真的是如此稀有。720Please respect copyright.PENANAQF5pt4flMm
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。720Please respect copyright.PENANAstb1MXAiCh
720Please respect copyright.PENANAg3cex4m4eL
(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。720Please respect copyright.PENANA71KapCHlGE
720Please respect copyright.PENANAK3udFTvlEo720Please respect copyright.PENANAIArgaXXhGD
720Please respect copyright.PENANATHcE4d3pP8
這蛋白質有三大特性,720Please respect copyright.PENANAy7Z6OxlpS1
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。720Please respect copyright.PENANAfO1rwXCxJv
720Please respect copyright.PENANA5P1yX1C4lM
2.攝氏95度下仍然正常運作。720Please respect copyright.PENANAkU1SvX9BgB
720Please respect copyright.PENANARsU5OyJmag
3.pH2.5酸性環境仍能正常運作。720Please respect copyright.PENANAcXUbf9Y9D4
720Please respect copyright.PENANAiOEgBSFBsa
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。720Please respect copyright.PENANAMewxlj7u7y
720Please respect copyright.PENANAI2QOZPpVcs
(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。720Please respect copyright.PENANA5hYoRNzgLl
720Please respect copyright.PENANAxSoUjXyx9a720Please respect copyright.PENANA8aZVdiL1Eg
720Please respect copyright.PENANAhGHNw9FhsG
720Please respect copyright.PENANATVYW1fFyvN
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。720Please respect copyright.PENANAAJEhFWYjzk
720Please respect copyright.PENANA1ckzMfcgo2
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/toc720Please respect copyright.PENANAx10eDJLRUK
720Please respect copyright.PENANArcCiEy8N9F
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。720Please respect copyright.PENANAbzWmoXSfiw
720Please respect copyright.PENANAm9bdGs0AOA
Link:720Please respect copyright.PENANAYg3c5JOql7
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio720Please respect copyright.PENANA4dYQHdNoa8
720Please respect copyright.PENANABmAWUORUDI
720Please respect copyright.PENANAluCWEggPhE
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。720Please respect copyright.PENANArBT6YbgS7E
720Please respect copyright.PENANAtVwLM9rDuQ
720Please respect copyright.PENANAt3ggeHMsCd
Ref1:https://pubmed.ncbi.nlm.nih.gov/30705185/720Please respect copyright.PENANAZQzzrL72lE
Ref2:https://pubs.acs.org/doi/10.1021/acs.inorgchem.0c01303720Please respect copyright.PENANAsnDK5vJLLw