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。946Please respect copyright.PENANAQLOhBWNUED
946Please respect copyright.PENANAZyAYOzjgoz
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。946Please respect copyright.PENANA2BElnxZ8a0
946Please respect copyright.PENANAPnu59uWxsC
(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。946Please respect copyright.PENANAjYhAhn4ty0
946Please respect copyright.PENANAun04Ewyzfs
946Please respect copyright.PENANAcspU9Vd7Pu
(圖3)塑膠粒體積過大的話,細胞便無法把它吞進內部。946Please respect copyright.PENANAo916q2ZH7G
946Please respect copyright.PENANAtARiBRTYFu
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。946Please respect copyright.PENANAl5Eiwqhip5
946Please respect copyright.PENANA1Hb2B2JOzB
(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。946Please respect copyright.PENANAriyWemHWwU
946Please respect copyright.PENANAcn07G33gL9
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。946Please respect copyright.PENANAB8FF7p3wZr
946Please respect copyright.PENANAvKsiGpfHZ8
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。946Please respect copyright.PENANACXPmyphZmD
946Please respect copyright.PENANAFeoBHFkK1b
946Please respect copyright.PENANA77leqOaeg0
(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。946Please respect copyright.PENANASYfL2EZH6g
946Please respect copyright.PENANApFcVm1TOTj
946Please respect copyright.PENANAQ2ynpguBDt
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)。946Please respect copyright.PENANAQyloNWBaQ9
946Please respect copyright.PENANAIKm7PASUpY
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。946Please respect copyright.PENANAmiUOq8cjSG
946Please respect copyright.PENANAAZYFXKgpnE
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。946Please respect copyright.PENANAsew6RXbwST
946Please respect copyright.PENANASxtd9qEYwy
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/toc946Please respect copyright.PENANArzPfZEvKCs
946Please respect copyright.PENANAQI9fqRt5NA
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。946Please respect copyright.PENANAT1UE54QR9B
946Please respect copyright.PENANAvl8Pk1K0v2
Link:946Please respect copyright.PENANAT3WiRQLNaJ
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio946Please respect copyright.PENANANNXLVrvVuB
946Please respect copyright.PENANA7jrDkjlhuB
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。946Please respect copyright.PENANAUaUUMb9YrB
946Please respect copyright.PENANAcXVRvHidFD
https://www.instagram.com/potatopigtongue/946Please respect copyright.PENANAC3qJ3KIcM9
946Please respect copyright.PENANAx8Ftt1ZWGs
946Please respect copyright.PENANAfXbFzyEv2a
Ref1:https://www.nature.com/articles/s41559-017-0116946Please respect copyright.PENANA5SPCInT3fs
Ref2:https://advances.sciencemag.org/content/6/50/eabd1211/tab-pdf946Please respect copyright.PENANA5ja3wTI0hP
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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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