In this study, the distribution levels of tris(2,3-dibromopropyl) isocyanurate(TBC) and three isomers(α-HBCD, β-HBCD, γ-HBCD) of hexabromocyclododecane(HBCDs) were analyzed in the sediment samples from the north shore intertidal zone of Jiaozhou Bay. The concentrations TBC and three isomers(α-HBCD, β-HBCD, γ-HBCD) are in the range of 1.20 ~ 5.62 ng·g~(-1)(dry weight), 1.18 ~ 1.54 ng·g~(-1)(dry weight), 1.50 ~ 1.85 ng·g~(-1)(dry weight), and 2.12 ~ 2.99 ng·g~(-1)(dry weight) respectively. Spatial distributio...