Laboratory of Organic Geochemistry, Tokyo University of Agriculture and Technology, 3-5-8, Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
Laboratory of Environmental Toxicology, Tokyo University of Agriculture and Technology, 3-5-8, Saiwaicho, Fuchu, Tokyo 183-8509, Japan.
Mar Pollut Bull. 2023 May;190:114812. doi: 10.1016/j.marpolbul.2023.114812. Epub 2023 Mar 16.
Plastic litter containing additives is potentially a major source of chemical contamination in remote areas. We investigated polybrominated diphenyl ethers (PBDEs) and microplastics in crustaceans and sand from beaches with high and low litter volumes on remote islands that were relatively free of other anthropogenic contaminants. Significant numbers of microplastics in the digestive tracts, and sporadically higher concentrations of rare congeners of PBDEs in the hepatopancreases were observed in coenobitid hermit crabs from the polluted beaches than in those from the control beaches. PBDEs and microplastics were detected in high amounts in one contaminated beach sand sample, but not in other beaches. Using BDE209 exposure experiments, similar debrominated products of BDE209 in field samples were detected in the hermit crabs. The results showed that when hermit crabs ingest microplastics containing BDE209, BDE209 leaches out and migrates to other tissues where it is metabolized.
塑料垃圾中含有的添加剂是偏远地区化学污染的一个主要来源。我们研究了偏远岛屿上高和低垃圾量海滩上甲壳类动物和沙中的多溴二苯醚（PBDEs）和微塑料，这些岛屿相对没有其他人为污染物。在受污染海滩上的群居寄居蟹的消化道中发现了大量的微塑料，并且在肝胰腺中偶尔出现了 PBDEs 的稀有同系物的浓度更高，而在对照海滩上则没有发现。在一个受污染的海滩沙样本中检测到了大量的 PBDEs 和微塑料，但在其他海滩中没有检测到。使用 BDE209 暴露实验，在寄居蟹中检测到了现场样本中 BDE209 的类似脱溴产物。结果表明，当寄居蟹摄入含有 BDE209 的微塑料时，BDE209 会渗出并迁移到其他组织中进行代谢。
