TY - JOUR
T1 - Mesh selectivity of neuston nets for microplastics
AU - Tokai, Tadashi
AU - Uchida, Keiichi
AU - Kuroda, Mao
AU - Isobe, Atsuhiko
N1 - Funding Information:
This study was partly supported by the Environmental Research and Technology Development Fund ( 4-1502 and SII-2-3 ) of the Ministry of the Environment , Japan, and by JSPS KAKENHI (Grant-in-Aid for Scientific Research(B)) Grant Number JP20H03060 of Society for the Promotion of Science, Japan.
Publisher Copyright:
© 2021 The Author(s)
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/4
Y1 - 2021/4
N2 - Two neuston nets, mesh opening 1.00 mm and 0.333 mm, were towed in parallel. The 0.333 mm net collected more microplastics of longest length ≤2.00 mm than the 1.00 mm net. Mesh selection curve of the 1.00 mm mesh net for microplastics was estimated with the SELECT analysis by comparison of size distributions of microplastics collected by the two nets. Selection curve of the 0.333 mm mesh net, often used as a standard mesh size for microplastic net sampling, was also estimated on the assumption of geometrical similarity between microplastic size and mesh opening for a given retention probability. Approximately 60% amount of microplastics (0.4–1.0 mm) in net sampling with the 0.333 mm net passed through the mesh and was thus unaccounted for. The 0.333 mm net can retain at most 1.5% of microplastics ≤0.4 mm entering the net, and rarely retained microplastics ≤0.3 mm.
AB - Two neuston nets, mesh opening 1.00 mm and 0.333 mm, were towed in parallel. The 0.333 mm net collected more microplastics of longest length ≤2.00 mm than the 1.00 mm net. Mesh selection curve of the 1.00 mm mesh net for microplastics was estimated with the SELECT analysis by comparison of size distributions of microplastics collected by the two nets. Selection curve of the 0.333 mm mesh net, often used as a standard mesh size for microplastic net sampling, was also estimated on the assumption of geometrical similarity between microplastic size and mesh opening for a given retention probability. Approximately 60% amount of microplastics (0.4–1.0 mm) in net sampling with the 0.333 mm net passed through the mesh and was thus unaccounted for. The 0.333 mm net can retain at most 1.5% of microplastics ≤0.4 mm entering the net, and rarely retained microplastics ≤0.3 mm.
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U2 - 10.1016/j.marpolbul.2021.112111
DO - 10.1016/j.marpolbul.2021.112111
M3 - Article
C2 - 33588104
AN - SCOPUS:85100829289
VL - 165
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
SN - 0025-326X
M1 - 112111
ER -