The occurrence, distributions, and ecological risks of 11 organophosphate flame retardants (OPFRs) were investigated in the seawater and sediment samples from the Qinzhou Bay. The Σ₁₁OPFRs in the surface seawater and sediments ranged from 150 to 885 ng/L and from <the limit of quantification (LOQ) to 32.2 ng/g dw, respectively, with high levels of OPFRs in the industrialized and port areas. Tris (2-chloro-propyl) phosphate (TCIPP), tris (2-chloroethyl) phosphate (TCEP), and tri-n-butyl phosphate (TNBP) were the dominant OPFRs in the surface seawater and sediments. The Σ₁₁OPFRs concentrations in the sediment core ranged 1.2–18.6 ng/g dw and the vertical trends showed a recent increase of OPFRs emissions, especially for TNBP and triphenyl phosphate (TPHP). Risk assessment revealed that individual OPFR could pose low to medium ecological risks, but the risk from the mixture of OPFRs on aquatic organisms requires more attention.

对钦州湾海水和沉积物样品中的11种有机磷酸盐阻燃剂（OPFRs）的发生，分布和生态风险进行了调查。所述Σ ₁₁ OPFRs在表面海水和沉积物范围从150到885纳克/升，并从<定量限（LOQ）的极限到32.2纳克/克干重，分别，与高水平的工业化和端口区域OPFRs的。磷酸三（2-氯丙基）酯（TCIPP），磷酸三（2-氯乙基）酯（TCEP）和磷酸三正丁酯（TNBP）是地表海水和沉积物中的主要OPFR。该Σ ₁₁沉积物芯中的OPFRs浓度范围为1.2-18.6 ng / g dw，垂直趋势显示OPFRs排放量最近有所增加，特别是对于TNBP和磷酸三苯酯（TPHP）而言。风险评估显示，单个OPFR可能带来中低生态风险，但混合OPFR对水生生物的风险需要引起更多关注。