Abstract
The long-distance transport potential of toxic lead (Pb) by plastic marine debris was examined by pure water leaching experiments using plastic fishery floats containing high level of additive-Pb such as 5100 ± 74.3 mg kg-1. The leaching of Pb ended after sequential 480-h leaching experiments, and the total leaching amount is equivalent to approximately 0.1% of total Pb in a float. But it recovered when the float was scratched using sandpaper. We propose that a "low-Pb layer," in which Pb concentration is negligibly small, be generated on the float surface by the initial leaching process. Thickness of the layer is estimated at 2.5 ± 1.2 μm, much shallower than flaws on floats scratched by sandpaper and floats littering beaches. The result suggests that the low-Pb layer is broken by physical abrasion when floats are washed ashore, and that Pb inside the floats can thereafter leach into beaches.
| Original language | English |
|---|---|
| Pages (from-to) | 333-339 |
| Number of pages | 7 |
| Journal | Marine Pollution Bulletin |
| Volume | 107 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jun 15 2016 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Oceanography
- Aquatic Science
- Pollution
Cite this
The potential of oceanic transport and onshore leaching of additive-derived lead by marine macro-plastic debris. / Nakashima, Etsuko; Isobe, Atsuhiko; Kako, Shin'ichiro; Itai, Takaaki; Takahashi, Shin; Guo, Xinyu.
In: Marine Pollution Bulletin, Vol. 107, No. 1, 15.06.2016, p. 333-339.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The potential of oceanic transport and onshore leaching of additive-derived lead by marine macro-plastic debris
AU - Nakashima, Etsuko
AU - Isobe, Atsuhiko
AU - Kako, Shin'ichiro
AU - Itai, Takaaki
AU - Takahashi, Shin
AU - Guo, Xinyu
PY - 2016/6/15
Y1 - 2016/6/15
N2 - The long-distance transport potential of toxic lead (Pb) by plastic marine debris was examined by pure water leaching experiments using plastic fishery floats containing high level of additive-Pb such as 5100 ± 74.3 mg kg-1. The leaching of Pb ended after sequential 480-h leaching experiments, and the total leaching amount is equivalent to approximately 0.1% of total Pb in a float. But it recovered when the float was scratched using sandpaper. We propose that a "low-Pb layer," in which Pb concentration is negligibly small, be generated on the float surface by the initial leaching process. Thickness of the layer is estimated at 2.5 ± 1.2 μm, much shallower than flaws on floats scratched by sandpaper and floats littering beaches. The result suggests that the low-Pb layer is broken by physical abrasion when floats are washed ashore, and that Pb inside the floats can thereafter leach into beaches.
AB - The long-distance transport potential of toxic lead (Pb) by plastic marine debris was examined by pure water leaching experiments using plastic fishery floats containing high level of additive-Pb such as 5100 ± 74.3 mg kg-1. The leaching of Pb ended after sequential 480-h leaching experiments, and the total leaching amount is equivalent to approximately 0.1% of total Pb in a float. But it recovered when the float was scratched using sandpaper. We propose that a "low-Pb layer," in which Pb concentration is negligibly small, be generated on the float surface by the initial leaching process. Thickness of the layer is estimated at 2.5 ± 1.2 μm, much shallower than flaws on floats scratched by sandpaper and floats littering beaches. The result suggests that the low-Pb layer is broken by physical abrasion when floats are washed ashore, and that Pb inside the floats can thereafter leach into beaches.
UR - http://www.scopus.com/inward/record.url?scp=84963542062&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84963542062&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2016.03.038
DO - 10.1016/j.marpolbul.2016.03.038
M3 - Article
C2 - 27095373
AN - SCOPUS:84963542062
VL - 107
SP - 333
EP - 339
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
SN - 0025-326X
IS - 1
ER -