游泳池水中的消毒副产物(DBP)是公众健康的广泛关注。在这项研究中,五类脂肪族卤化DBPs的出现,即,三卤甲烷(THMs),卤代乙酸(HAAs),卤代乙腈(HAN),卤代硝基甲烷(HNMs),和卤酮(HKs),和六类芳族卤化DBPs,即,卤代酚(HP),卤代硝基酚(HNP),卤代羟基苯甲醛(HBAL),卤代羟基苯甲酸(HBA),卤代苯醌(HBQs),和卤代苯胺(HAs),在七个室内游泳池水和进入的自来水中进行了检查。探讨了DBP浓度与水质参数之间的相关性。此外,用人类肝癌(HepG2)细胞测试了脂肪族和芳香族卤化DBPs的细胞毒性,并计算了不同DBP类别的浓度-细胞毒性贡献。结果表明,24个脂肪族(5个THMs,8HAAs,5HANS,4个HNMs,和2个HKs)和50个芳族卤化DBPs(9个HPs,8个HNP,9个HBAL,8个HBA,11个HBQs,和5个HA)存在于游泳池水中,其中首次在游泳池水中检测到41种芳族卤化DBPs。游泳池水中五类脂肪族卤代DBPs的平均浓度依次为HAAs>HANs>HKs>THMs>HNMs,而进入的自来水的顺序为THMs>HAAs>HKs>HANs>HNMs。游泳池水中芳香族卤化DBPs的平均浓度明显低于脂肪族卤化DBPs,按照HBQ>HP>HBA>HBAL>HAS>HNP的顺序,而进入自来水的水的顺序为HBAL>HBQs>HP>HBA>HAs>HNP。游泳池水中不同DBP类别的平均浓度-细胞毒性贡献依次为HAAs>HANs>HNMs>HKs>HBQs>THMs>HPs>HNPs>HBA>HBALs>HAs,与HAAs,HANs,和HNMs在所有DBP类别中具有主要的浓度-细胞毒性贡献(总计93.2%)。
Disinfection byproducts (DBPs) in swimming pool water are of wide concern for public health. In this study, the occurrence of five categories of aliphatic halogenated DBPs, i.e., trihalomethanes (THMs), haloacetic acids (HAAs), haloacetonitriles (HANs), halonitromethanes (HNMs), and haloketones (HKs), and six categories of aromatic halogenated DBPs, i.e., halophenols (HPs), halonitrophenols (HNPs), halohydroxy-benzaldehydes (HBALs), halohydroxybenzoic acids (HBAs), halobenzoquinones (HBQs), and haloanilines (HAs), was examined in seven indoor swimming pool water and their incoming tap water. The correlations between the DBP concentrations and water quality parameters were explored. Moreover, the cytotoxicity of the aliphatic and aromatic halogenated DBPs was tested with human hepatoma (HepG2) cells, and the concentration-cytotoxicity contributions of different DBP categories were calculated. The results demonstrate that 24 aliphatic (5 THMs, 8 HAAs, 5 HANs, 4 HNMs, and 2 HKs) and 50 aromatic halogenated DBPs (9 HPs, 8 HNPs, 9 HBALs, 8 HBAs, 11 HBQs, and 5 HAs) were present in the swimming pool water, among which 41 aromatic halogenated DBPs were detected in swimming pool water for the first time. The average concentrations of the five categories of aliphatic halogenated DBPs in the swimming pool water were in the order of HAAs > HANs > HKs > THMs > HNMs, while those in their incoming tap water were in the order of THMs > HAAs > HKs > HANs > HNMs. The average concentrations of the aromatic halogenated DBPs in the swimming pool water were significantly lower than those of the aliphatic halogenated DBPs, following the order of HBQs > HPs > HBAs > HBALs > HAs > HNPs, while those in their incoming tap water were in the order of HBALs > HBQs > HPs > HBAs > HAs > HNPs. The average concentration-cytotoxicity contributions of different DBP categories in the swimming pool water followed the order of HAAs > HANs > HNMs > HKs > HBQs > THMs > HPs > HNPs > HBAs > HBALs > HAs, with HAAs, HANs, and HNMs possessing the main concentration-cytotoxicity contributions (93.2% in total) among all DBP categories.