Laboratory of Organic Geochemistry (LOG), Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan.
Laboratory of Organic Geochemistry (LOG), Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan.
Mar Pollut Bull. 2020 Feb;151:110806. doi: 10.1016/j.marpolbul.2019.110806. Epub 2019 Dec 10.
PCBs and PBDEs in microplastics and zooplankton collected in surface water at 27 locations in the Pacific Ocean and around the coast of Japan were investigated. Both PCBs and PBDEs were observed in buoyant microplastics, even in smaller particles of 0.315-1 mm. Concentrations of Σ13 PCBs were 0.04-124 ng/g, and were higher in urban bay areas such as Tokyo Bay. Sporadic moderate to high concentrations of PBDEs were observed in both urban-offshore and rural-offshore locations, consisting mostly of higher-brominated congeners. From the latter, BDE 209 ranged from not detected to 2158 ng/g. The microplastic-to-zooplankton abundance ratio threshold was 0.6 for PCBs and 0.08 for PBDEs, above which exposure would be greater from microplastics than from zooplankton.
对在太平洋 27 个地点和日本沿海采集的表层水中的微塑料和浮游动物中的多氯联苯（PCBs）和多溴二苯醚（PBDEs）进行了调查。在浮性微塑料中观察到了 PCBs 和 PBDEs，甚至在 0.315-1 毫米的较小颗粒中也观察到了 PCBs 和 PBDEs。Σ13 PCBs 的浓度为 0.04-124ng/g，在东京湾等城市港湾地区的浓度更高。在城市-近岸和农村-近岸地区均观察到 PBDEs 的浓度存在中等偏高的情况，主要由高溴同系物组成。在后者中，BDE 209 的浓度范围为未检出到 2158ng/g。对于 PCBs，微塑料-浮游动物丰度比的阈值为 0.6，对于 PBDEs，微塑料-浮游动物丰度比的阈值为 0.08，高于该阈值时，通过微塑料暴露的程度将大于通过浮游动物。
