科普專欄–薯不揀單 - 深入淺出–排放到大海的塑膠粒

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。1207Please respect copyright.ＰＥＮＡＮＡ9M9cGNYS5m
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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。1207Please respect copyright.ＰＥＮＡＮＡVRHoDY1Uqt
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(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。1207Please respect copyright.ＰＥＮＡＮＡ71qH8IlkvB
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(圖3)塑膠粒體積過大的話，細胞便無法把它吞進內部。1207Please respect copyright.ＰＥＮＡＮＡRefKX82bkH
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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。1207Please respect copyright.ＰＥＮＡＮＡJevLNOZYgP
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(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。1207Please respect copyright.ＰＥＮＡＮＡRE3b3tQvMU
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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。1207Please respect copyright.ＰＥＮＡＮＡP3curiPx7b
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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。1207Please respect copyright.ＰＥＮＡＮＡDZ2G2G8l5R
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(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。1207Please respect copyright.ＰＥＮＡＮＡb1S3UTh7cu
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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)。1207Please respect copyright.ＰＥＮＡＮＡm53LuaQL6E
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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。1207Please respect copyright.ＰＥＮＡＮＡiohIoJtClE
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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。1207Please respect copyright.ＰＥＮＡＮＡmsHtS0UtY8
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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/toc1207Please respect copyright.ＰＥＮＡＮＡX6rdYKWhA2
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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。1207Please respect copyright.ＰＥＮＡＮＡa1nOQvJfRp
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Link:1207Please respect copyright.ＰＥＮＡＮＡElYbdZQWX9
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1207Please respect copyright.ＰＥＮＡＮＡAxXpxpMwnq
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有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。1207Please respect copyright.ＰＥＮＡＮＡVTQbbOsb0A
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Ref1:https://www.nature.com/articles/s41559-017-01161207Please respect copyright.ＰＥＮＡＮＡqltgeDDkpT
Ref2:https://advances.sciencemag.org/content/6/50/eabd1211/tab-pdf1207Please respect copyright.ＰＥＮＡＮＡdDMWSno0qn

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