Eight fish species were sampled from a coastal coral reef ecosystem near Weizhou Island, South China Sea, to investigate the composition profiles and bioaccumulation of organochlorines (OCs). The total concentrations of 18 organochlorine pesticides (OCPs) and 22 polychlorinated biphenyls (PCBs) were found to be 26.5–452 ng/g lw and 0.87–19.8 ng/g lw, respectively. The contaminant distribution pattern indicated that agrochemical sources were more important than industrial sources, and that historical residues remain the primary source of OCs in Weizhou Island. Bioaccumulation factors (BAFs) indicated that dichlorodiphenyltrichloroethanes was bioaccumulating with log BAFs ranging from 3.53 to 5.21. Some congeners diverged from the general trend predicted by the logarithm octanol-water partition coefficient (log K_ow); this was mainly attributable to differences in the bioaccumulation potentials of these congeners in the studied samples. Trophic magnification factors demonstrated that aldrin, endrin, and dieldrin undergo significant trophic dilution, while the other six OC compounds undergo trophic magnification in the food chain. The presence of OCP congeners was also probably affected by their metabolism in fish tissues. The estimated daily intakes of OCPs via fish consumption by residents ranged from 0.05 to 5.45 ng/kg body weight/day, which is below the acceptable daily intake recommended by the FAO/WHO.

从南海Wei洲岛附近的沿海珊瑚礁生态系统中采样了八种鱼类，以调查有机氯（OCs）的组成特征和生物富集。发现18种有机氯农药（OCP）和22种多氯联苯（PCB）的总浓度分别为26.5–452 ng / g lw和0.87–19.8 ng / g lw。污染物的分布模式表明，农业化学来源比工业来源更为重要，历史残留物仍然是Wei洲岛OC的主要来源。生物富集因子（BAF）表明二氯二苯基三氯乙烷的生物富集对数BAF为3.53至5.21。一些同类物与对数辛醇-水分配系数（log K_ow）; 这主要归因于所研究样品中这些同类物的生物蓄积潜力的差异。营养放大倍数表明，艾氏剂，异狄氏剂和狄氏剂进行了明显的营养稀释，而其他六种OC化合物在食物链中经历了营养放大。OCP同系物的存在也可能受到它们在鱼组织中新陈代谢的影响。居民通过食用鱼估计的OCP的每日摄入量为0.05至5.45 ng / kg体重/天，这低于粮农组织/世卫组织建议的可接受的每日摄入量。