Wang Shi-Liang, Cao Xue-Zhi
School of Life Sciences, Qufu Normal University, Qufu 273165, China.
School of History and Culture, Qufu Normal University, Qufu 273165, China.
Huan Jing Ke Xue. 2020 Dec 8;41(12):5428-5437. doi: 10.13227/j.hjkx.202003286.
Coastal tourism resorts have been developing rapidly in recent years, and the quality of their waterbodies directly affects human health. Perfluoroalkyl substances (PFASs) are found in every environmental medium and have garnered widespread social concern because of their potential ecological harm. This study investigated the contamination characteristics and potential ecological risks of 12 PFASs in the water and sediment of 20 coastal tourism resorts in Shandong Peninsula. The results revealed that all targeted pollutants were observed in the water and most sediment samples collected from the coastal tourism resorts. The sum of the 12 PFASs ∑PFASs averaged 67.91 ng·L and 5.89 ng·g in the water and sediment, respectively. The predominant compounds were perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) in both water and sediment. The ∑PFASs and its homologues concentration indicated the spatial variations in the water and sediment of different tourism resorts, and the values were higher in the tourism resorts near the city center and the industrial areas than in other areas. The partition coefficient () of all the target compounds in the water/sediment system of different tourism resorts showed obvious differences. In addition, the of the compounds with longer carbon chains (C ≥ 7) generally had higher values, which suggests that long-chain PFAAs are prone to adsorption by sediment. Therefore, the discharge of municipal industrial wastewater and domestic sewage is the main source of contamination. The salinity of water and the total carbon contents of sediment did not show any effect on the partition of PFASs in the water/sediment system. PFOS and PFOA might have great potential ecological risks in the water environment of all tourism resorts.
近年来，沿海旅游度假区发展迅速，其水体质量直接影响人体健康。全氟烷基物质（PFASs）存在于各种环境介质中，因其潜在的生态危害而受到社会广泛关注。本研究调查了山东半岛20个沿海旅游度假区水体和沉积物中12种PFASs的污染特征及潜在生态风险。结果表明，在沿海旅游度假区采集的水体和大部分沉积物样本中均检测到了所有目标污染物。12种PFASs的总和∑PFASs在水体和沉积物中的平均含量分别为67.91 ng·L和5.89 ng·g。水体和沉积物中的主要化合物均为全氟辛酸（PFOA）和全氟辛烷磺酸（PFOS）。∑PFASs及其同系物浓度表明不同旅游度假区水体和沉积物存在空间差异，市中心和工业区附近旅游度假区的值高于其他地区。不同旅游度假区水/沉积物系统中所有目标化合物的分配系数（）存在明显差异。此外，碳链较长（C≥7）的化合物的通常具有较高的值，这表明长链全氟烷基酸易于被沉积物吸附。因此，城市工业废水和生活污水排放是主要污染来源。水体盐度和沉积物总碳含量对PFASs在水/沉积物系统中的分配没有影响。PFOS和PFOA在所有旅游度假区的水环境中可能具有很大的潜在生态风险。
