Concentration and Distribution of Organic Pollutants in Fish of Yongxing and Qilianyu Islands, Xisha, China

Organic pollutants were widely detected in marine fish in global oceans, and long-term consumption can pose certain health risks to humans. To study the pollution characteristics, 50 fish were collected in Xisha, China, in which Organochlorine pesticides (OCPs), polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) were determined by GC-MS. It was found that OCPs, PAHs and PCBs concentrations in fish ranged from 2.23-91.57ng/g ww, 2.11-31.70ng/g ww and 1.55-54.04ng/g ww, respectively. The ratios of DDTs/(DDE+DDD)＞1 in 50% of fish. The ratio of ANT/(ANT+PHE)＞0.1 in 88% of fish and the ratio of FL/(FL+PYR)＞0.5 in 100% of fish. Using the ILCR model to evaluate the ecological risk of fish, the ILCR values of organic pollutants in most fish were below 1×10⁻⁶. The BRIEF REPORT is available for this paper at http://www.ykcs.ac.cn/en/article/doi/10.15898/j.ykcs.202304280057.