排出大海的塑膠,經過紫外線、物理或者生物分解的作用等,將會拆解成為微形塑膠粒。938Please respect copyright.PENANABS1uiyy1iX
938Please respect copyright.PENANAt3XLf0gP72
如圖中所示,被分解的膠粒將依據其體積大細,而被賦上不同的命名。938Please respect copyright.PENANAvhL7gyoU5u
938Please respect copyright.PENANATjfYpppo0Y
(圖2)箭嘴所指的為3μm的microplastic,可以見得到microplastic會黏在細胞的表面,同時細胞亦有能力將microplastic吞進內部。938Please respect copyright.PENANAg8jTR5wboC
938Please respect copyright.PENANArhwTfTpeJG
938Please respect copyright.PENANAJmjQko4Odh
(圖3)塑膠粒體積過大的話,細胞便無法把它吞進內部。938Please respect copyright.PENANAqDZLDdVRis
938Please respect copyright.PENANA1ZXTAy35fp
但是,如圖中所示,若某特定會被細胞外部接收器吸收的物質黏附在體積相對為大的塑膠粒表面,大型塑膠粒便能經由細胞接收器輔助進入體內。938Please respect copyright.PENANAcitpekZlK9
938Please respect copyright.PENANA3SAQDdrsHU
(圖4)科學家證實(Ref2),對比浸在乾淨水裡,浸在淡/鹹水4星期的塑膠粒將更有效率進入細胞內部,而淡水及鹹水兩者對塑膠粒的影響則為相約。938Please respect copyright.PENANABxoq4GX78l
938Please respect copyright.PENANA4taP80OzNm
這相信是因為水裡不同的物質黏附在塑膠粒表面上,從而輔助塑膠粒進入細胞內。938Please respect copyright.PENANAf3sEkdAdej
938Please respect copyright.PENANAK6NbTaCcPh
而乾淨水並無外來物質,因此沒能輔助塑膠粒進入細胞內部,故比浸在淡/鹹水4星期的塑膠粒較為遜色。938Please respect copyright.PENANA7suN3ZWY0b
938Please respect copyright.PENANAA0rj2wReJS
938Please respect copyright.PENANAdjgknGBN1p
(圖5)現實中,被分解的膠粒在大海中會遇上各種外來物質,形成名為Ecocorona的外膜。938Please respect copyright.PENANABeNA0Vdd1X
938Please respect copyright.PENANA3lEOJanb20
938Please respect copyright.PENANAxeQUOJWzaU
與體積相同的塑膠粒作對比,擁有Ecocorona外膜的塑膠粒會比工業原始出產版本的塑膠粒更有效率進入人體細胞內部(Ref1)。938Please respect copyright.PENANAnDF6tFaUwZ
938Please respect copyright.PENANAMXH4kaWmWt
由此可見,長期攝取排放在海洋中的塑膠粒對身體的影響究竟會有多大這話題,絕對值得作深入的研究和檢討。938Please respect copyright.PENANASW88HnkqZr
938Please respect copyright.PENANAH9Lh3nXqd4
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。938Please respect copyright.PENANAaYLi8vVElU
938Please respect copyright.PENANAKj7I3FcTsX
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/toc938Please respect copyright.PENANAkZgh8gNve4
938Please respect copyright.PENANAmG2seLMt5Z
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。938Please respect copyright.PENANAIIJUGs2I6a
938Please respect copyright.PENANAk2I4dqICgR
Link:938Please respect copyright.PENANAzZP0N0SDDU
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio938Please respect copyright.PENANATxmxHF2LTi
938Please respect copyright.PENANADTiuY0uzTJ
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。938Please respect copyright.PENANA15aqSbyELs
938Please respect copyright.PENANAEcsAk5xZiA
https://www.instagram.com/potatopigtongue/938Please respect copyright.PENANAQtxzdqPHrb
938Please respect copyright.PENANA1it8z7j8Ne
938Please respect copyright.PENANApN4KRsS9vv
Ref1:https://www.nature.com/articles/s41559-017-0116938Please respect copyright.PENANAni6H0oRnzV
Ref2:https://advances.sciencemag.org/content/6/50/eabd1211/tab-pdf938Please respect copyright.PENANA84TskxoXzk
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科普專欄–薯不揀單
作者:
薯仔聞茱莉
篇 #120
深入淺出–排放到大海的塑膠粒
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