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。939Please respect copyright.PENANAMQE9Y6iuna
939Please respect copyright.PENANAPZrBv5NWbw
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。939Please respect copyright.PENANAUdbZgd5m39
939Please respect copyright.PENANAPQYAXLvXjR
(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。939Please respect copyright.PENANApqVvW79rjg
939Please respect copyright.PENANAuuMprGoncu
939Please respect copyright.PENANAiCzb8y4Tle
(圖3)塑膠粒體積過大的話,細胞便無法把它吞進內部。939Please respect copyright.PENANACZqMY6EPV0
939Please respect copyright.PENANAGAEPUGbpzM
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。939Please respect copyright.PENANApyJv9ldTkO
939Please respect copyright.PENANAL6TmFNhEKl
(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。939Please respect copyright.PENANAvSTeuh6scX
939Please respect copyright.PENANALKGn6ssHoU
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。939Please respect copyright.PENANAoP7c8YFDio
939Please respect copyright.PENANAeBivwJzelW
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。939Please respect copyright.PENANACIw23JRZF6
939Please respect copyright.PENANA5enPCc57Or
939Please respect copyright.PENANAJN9Rs2rmCa
(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。939Please respect copyright.PENANAXyMNDlI7FR
939Please respect copyright.PENANATibwIVeH8G
939Please respect copyright.PENANAyWFR36FWYj
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)。939Please respect copyright.PENANAhjuo5zD4Yx
939Please respect copyright.PENANAWGfESq7j0p
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。939Please respect copyright.PENANAKWGtccLzOW
939Please respect copyright.PENANAQKzzuXG0uM
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。939Please respect copyright.PENANAdNjif1P32F
939Please respect copyright.PENANAcBtQiDnZRO
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/toc939Please respect copyright.PENANACrzh7aXSjK
939Please respect copyright.PENANASrLPNldFjz
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。939Please respect copyright.PENANA9NPDA5LSH8
939Please respect copyright.PENANAWmdFj8pzHQ
Link:939Please respect copyright.PENANAd0Pqi7DNjw
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio939Please respect copyright.PENANAZPxLY71WJ7
939Please respect copyright.PENANAUDv1QAiiSX
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。939Please respect copyright.PENANA4Iu4gupQK6
939Please respect copyright.PENANA9f9PgdPGXG
https://www.instagram.com/potatopigtongue/939Please respect copyright.PENANARhmK5ErgNU
939Please respect copyright.PENANAoukV9RhmW9
939Please respect copyright.PENANAlKsY1taWaG
Ref1:https://www.nature.com/articles/s41559-017-0116939Please respect copyright.PENANAQGlWtOWncX
Ref2:https://advances.sciencemag.org/content/6/50/eabd1211/tab-pdf939Please respect copyright.PENANAqC9hIpdRaY
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #120
深入淺出–排放到大海的塑膠粒
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