Spatial distribution and vertical profile of polybrominated diphenyl ethers and hexabromocyclododecanes in sediment core from Tokyo Bay, Japan

Distribution of polybrominated diphenyl ethers and decabromodiphenylethane in surface sediments from the Bering Sea, Chukchi Sea, and Canada Basin

“…Most stations in the present study had concentrations higher than 5 pg/g for P PBDEs and 10 pg/g for BDE-209 and, in comparison, these concentrations were relatively lower than those in other Arctic marine sediments. Also, by comparison with areas in lower latitudes, P PBDEs in the present study were lower than those in the South China Sea Mai et al, 2005;Zhang et al, 2009); Yangtze River Delta (Chen et al, 2006); Bo Sea, China ; Tokyo Bay, Japan (Minh et al, 2007); San Francisco Bay (Oros et al, 2005); and Singapore (Wurl and Obbard, 2005). Concentrations of BDE-209 were lower than those in other locations also (Allchin et al, 1999;Chen et al, 2006;Eljarrat et al, 2005;Mai et al, 2005;Minh et al, 2007;Moon et al, 2007;Toms et al, 2008;Wang et al, 2009;Zhang et al, 2009).…”

Hexabromocyclododecanes in Surface Soils from E-Waste Recycling Areas and Industrial Areas in South China: Concentrations, Diastereoisomer- and Enantiomer-Specific Profiles, and Inventory

“…Variations in isomer profiles have frequently been reported in soil and sediment samples in other studies. 10,22,27,[30][31][32] Marvin Figure 2. Relationship between the logarithm of total HBCD concentrations and that of distance from the emission source in surrounding areas of the QY e-waste recycling site.…”

“…21 Because of limited data, HBCD levels in sediments were also included for comparison. [22][23][24][25][26][27][28][29][30][31][32] Most studies on sediment HBCDs have been performed in Europe, and the results showed different concentrations. The studies carried out near production sites or in the vicinity of industrial users of HBCDs found significantly higher levels, ranging from 38 to 1700 ng/g dw.…”

The impact of polybrominated diphenyl ether prohibition: A case study on the atmospheric levels in China, Japan and South Korea

“…However, the reduction of the atmospheric PBDE levels was not obvious in South Korea, where the overall concentration only decreased to some degree; the concentration measured at specific individual sites (SK2, Seoul) has even increased. This might be attributed to the fact that the economy of South Korea heavily depended on electronic industries (Minh et al, 2007) and Seoul is a huge metropolis with massive domestic consumption of electronic and electric appliances, which were mainly supplied by quite a few famous electronic companies such as Samsung and LG. Like the other parts of the world, the declining trend has been found in other regions.…”

“…The significantly high concentrations of PBDEs were measured at the several city sites in each country where they are the manufacturing base of electronics industry or a large market of consumer electronics or e-waste recycling center, such as CN15 Guangzhou (Huang et al, 2010), CN16 Hong Kong (Ramu et al, 2007) and CN8 Xi'an (Jaward et al, 2005), JA4 Tokyo (Minh et al, 2007), SK2 Seoul and SK3 Incheon (Gangnes and Van Assche, 2010). Temporally, the atmospheric concentrations in fall were usually higher than those in spring (also see Figs.…”