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。684Please respect copyright.PENANADxLiQNnvtI
684Please respect copyright.PENANAynxQGSEWyB684Please respect copyright.PENANAk2GydnFFX5
684Please respect copyright.PENANAh9ags71WJX
雖然它們被稱為稀土,但事實上它們並不真的是如此稀有。684Please respect copyright.PENANABDLUB8qjOj
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。684Please respect copyright.PENANA5vTQCwhqHh
684Please respect copyright.PENANApafK7IqzrQ
(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。684Please respect copyright.PENANAun7mPVXg6m
684Please respect copyright.PENANA7Z3itQduPa684Please respect copyright.PENANAwwr1hVVlbX
684Please respect copyright.PENANAV5UVZQWKtp
這蛋白質有三大特性,684Please respect copyright.PENANAGikp1FGdpo
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。684Please respect copyright.PENANAVg49uX6rYg
684Please respect copyright.PENANAEwsPTJEi2i
2.攝氏95度下仍然正常運作。684Please respect copyright.PENANA88pnUMGtTb
684Please respect copyright.PENANAUyp93KeIYF
3.pH2.5酸性環境仍能正常運作。684Please respect copyright.PENANABnNl8VbQd5
684Please respect copyright.PENANAoF27pNxJXV
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。684Please respect copyright.PENANAUC5cCdQEpu
684Please respect copyright.PENANAgjCTDZCLAz
(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。684Please respect copyright.PENANAqhC2mhoN0D
684Please respect copyright.PENANAqM8SmT6TmW684Please respect copyright.PENANAo1aaKplmRM
684Please respect copyright.PENANAlXALeuXndV
684Please respect copyright.PENANAn1fnONYWSD
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。684Please respect copyright.PENANATH4bFz09gy
684Please respect copyright.PENANAIpU2SfNR3E
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/toc684Please respect copyright.PENANAbG2V8UDpNQ
684Please respect copyright.PENANAFhczia022M
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。684Please respect copyright.PENANAtSRILhxb1A
684Please respect copyright.PENANAwz0ffrakck
Link:684Please respect copyright.PENANASS7BgrGaG6
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio684Please respect copyright.PENANAEJrUeIQdr4
684Please respect copyright.PENANAobEB7Zbr34
684Please respect copyright.PENANAbPvrOszUvt
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。684Please respect copyright.PENANAlf4yo1jWtH
684Please respect copyright.PENANAG1EeS9WZ0H
684Please respect copyright.PENANAi6ac8WiJHo
Ref1:https://pubmed.ncbi.nlm.nih.gov/30705185/684Please respect copyright.PENANAod3PON8UqF
Ref2:https://pubs.acs.org/doi/10.1021/acs.inorgchem.0c01303684Please respect copyright.PENANAm9wIspqytR