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。1208Please respect copyright.PENANAEagWkeSUfO1208Please respect copyright.PENANAfyCg1HU0io
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。1208Please respect copyright.PENANAtiXIjMCQTe
1208Please respect copyright.PENANAzohOc0s3oO
(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。1208Please respect copyright.PENANAplTXlEHm7i1208Please respect copyright.PENANAQ2JUrfx1xV
1208Please respect copyright.PENANAoqnsB3w7oj
(圖3)塑膠粒體積過大的話,細胞便無法把它吞進內部。1208Please respect copyright.PENANAaHiy8VvHgo1208Please respect copyright.PENANA9IJZr7odQF
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。1208Please respect copyright.PENANA9GVlrfz6LZ
1208Please respect copyright.PENANAqcjo52vwiB
(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。1208Please respect copyright.PENANAwNyoSVLo5T1208Please respect copyright.PENANAGCh5bScG4o
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。1208Please respect copyright.PENANA3wKT2xMtAg
1208Please respect copyright.PENANAqPJ5cLt02k
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。1208Please respect copyright.PENANAAvP7CtB0yc
1208Please respect copyright.PENANAm3S06Zn7xK
1208Please respect copyright.PENANATRgCe8sryl
(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。1208Please respect copyright.PENANAnZ1DlflmTM1208Please respect copyright.PENANATEt5jGbhmf
1208Please respect copyright.PENANAfVUlG15Ya7
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)。1208Please respect copyright.PENANAvWvSKUfKIk
1208Please respect copyright.PENANAUCEyf7ICOc
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。1208Please respect copyright.PENANAgfyviOBltH
1208Please respect copyright.PENANAgd81S9Svps
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。1208Please respect copyright.PENANA9fYbIgFu2d
1208Please respect copyright.PENANAPtI4s2Dgxg
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/toc1208Please respect copyright.PENANAPrR4tp7spx
1208Please respect copyright.PENANANhBzO5eD0X
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。1208Please respect copyright.PENANA4BEKC4tph7
1208Please respect copyright.PENANA0pdZRM6f8m
Link:1208Please respect copyright.PENANAJce94QW9gP
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1208Please respect copyright.PENANA46OtFIs56p
1208Please respect copyright.PENANAmd3Tid60Pa
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。1208Please respect copyright.PENANAaoYfFsom06
1208Please respect copyright.PENANA3pYqwDqd5U
https://www.instagram.com/potatopigtongue/1208Please respect copyright.PENANA6OFZVYEa19
1208Please respect copyright.PENANAZ1vDwp46RU
1208Please respect copyright.PENANAkEQeQecqIl
Ref1:https://www.nature.com/articles/s41559-017-01161208Please respect copyright.PENANAigxDrSZVrd
Ref2:https://advances.sciencemag.org/content/6/50/eabd1211/tab-pdf1208Please respect copyright.PENANApf2S2SBWK5
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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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