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Comment
. 2022 Aug 19;377(6608):eabl6433.
doi: 10.1126/science.abl6433. Epub 2022 Aug 19.

Comment on "The missing ocean plastic sink: Gone with the rivers"

Lei Mai  1 , Xiang-Fei Sun  1 , Eddy Y Zeng  1
Affiliations
Comment

Comment on "The missing ocean plastic sink: Gone with the rivers"

Lei Mai et al. Science. .

Abstract

Weiss et al. (Reports, 2 July 2021, p. 107) incorrectly conclude that the residence time for floating microplastic stock at the ocean surface is ~2.4 years. We contend that this conclusion is fundamentally flawed, because the residence time is obtained through dividing a published oceanic stock of plastic debris by a doubtable river microplastic flux estimated by the authors.

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