著者

Tae OHGAKI Hideshige TAKADA Ryu YOSHIDA Kaoruko MIZUKAWA Bee Geok YEO Mona ALIDOUST Natsuki HIRAI Rei YAMASHITA Takashi TOKUMARU Izumi WATANABE Siaw ONWONA-AGYEMAN Patricia GARDINER Marcus ERIKSEN Jay F. KELLY Carlos J. RODRÍGUEZ-SIERRA Laurent COLASSE Juan BAZTAN Fabiano Prado BARRETTO Gabriel Mendes IZAR Denis ABESSA Mohamad Pauzi ZAKARIA Charita S. KWAN Mahua SAHA Peter G. RYAN Steven WEERTS John OFOSU-ANIM Edward Benjamin SABI Lailah Gifty AKITA Heidi TAIT Cecilia ERIKSSON Harry BURTON

出版者

Japan Society for Environmental Chemistry

雑誌

Environmental Monitoring and Contaminants Research (ISSN:24357685)

巻号頁・発行日

vol.1, pp.75-90, 2021 (Released:2021-08-18)

参考文献数

67

被引用文献数

4

---

Polybrominated diphenyl ethers (PBDEs) were measured in plastic resin pellets collected from 65 beaches across 27 countries worldwide. They were detected at 49 locations at concentrations of the sum of 49 congeners of up to 46 ng/g-pellet and a median of 2 ng/g-pellet. These values are one to two orders of magnitude lower than those of polychlorinated biphenyls (PCBs) (median, 51 ng/g-pellet). This difference can be attributed to lower production of the Penta-BDE technical mixture, which is used extensively in some countries, and lower availability of brominated flame retardants for equilibrium partitioning than PCBs. Tetra-, penta-, and hexa-brominated congeners (BDE-47, 99, 100, 153, 154) were dominant over a deca-substituted congener (BDE-209) in many samples; this was significantly detected in pellets from some locations. Results indicate that pellets reflect the pollution status of PBDEs in the dissolved phase in seawater. From the ranking of the summed concentrations of six major PBDE congeners (Σ6PBDEs), we propose five levels of pollution categorization (ng/g-pellet): no (<0.2), slight (0.2–0.78), moderate (0.78–2.6), high (2.6–8.5), and extreme (>8.5) local pollution. The USA and neighboring countries were categorized as extreme (17–36 ng/g-pellet), western Europe and Japan were categorized as high (≤8.8), and most Asian and African countries were categorized as slight (<0.8). Notably, extreme or high pollution levels were also observed in countries with no history of PBDE production, such as Ghana (Σ6PBDEs up to 16 ng/g-pellet), the Philippines (7.5), and Hong Kong (7.7). Scrapped electrical and electronic waste might explain these anomalously high values.