In vitro bioassays for monitoring drinking water quality of tap water, domestic filtration and bottled water

被引:6
|
作者
Escher, Beate, I [1 ,2 ]
Blanco, Jordi [3 ]
Caixach, Josep [4 ]
Cserbik, Dora [5 ,6 ,7 ]
Farre, Maria J. [8 ,9 ]
Flores, Cintia [4 ]
Koenig, Maria [1 ]
Lee, Jungeun [1 ]
Nyffeler, Jo [1 ]
Planas, Carles [4 ]
Redondo-Hasselerharm, Paula E. [5 ,6 ,7 ,12 ]
Rovira, Joaquim [3 ,10 ]
Sanchis, Josep [8 ,9 ,13 ]
Schuhmacher, Marta [10 ]
Villanueva, Cristina M. [5 ,6 ,7 ,11 ]
机构
[1] UFZ Helmholtz Ctr Environm Res, Dept Cell Toxicol, Leipzig, Germany
[2] Eberhard Karls Univ Tubingen, Dept Geosci, Environm Toxicol, Tubingen, Germany
[3] Univ Rovira & Virgili, Sch Med, Lab Toxicol & Environm Hlth, Reus, Spain
[4] IDAEA CSIC, Inst Environm Assessment & Water Res, Mass Spectrometry Lab Organ Pollutants, Barcelona, Spain
[5] ISGlobal, Barcelona, Spain
[6] Univ Pompeu Fabra, UPF, Barcelona, Spain
[7] CIBERESP, CIBER Epidemiol & Salud Publ, Madrid, Spain
[8] ICRA, Catalan Inst Water Res, Girona, Spain
[9] Univ Girona, Girona, Spain
[10] Univ Rovira & Virgili, Environm Engn Lab, Tarragona, Spain
[11] Hosp del Mar, IMIM, Med Res Inst, Barcelona, Spain
[12] IMDEA Water, Madrid, Spain
[13] Catalan Water Agcy, Barcelona, Spain
关键词
Water quality; Bioassay; Oxidative stress; Neurotoxicity; Disinfection by-products; DISINFECTION BY-PRODUCTS; MAMMALIAN-CELL CYTOTOXICITY; OXIDATIVE STRESS-RESPONSE; BIOANALYTICAL ASSESSMENT; CHEMICALS; GENOTOXICITY; TOXICITY; HEALTH; DIBROMOACETONITRILE; MICROPOLLUTANTS;
D O I
10.1038/s41370-023-00566-6
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Background Location-specific patterns of regulated and non-regulated disinfection byproducts (DBPs) were detected in tap water samples of the Barcelona Metropolitan Area. However, it remains unclear if the detected DBPs together with undetected DPBs and organic micropollutants can lead to mixture effects in drinking water.Objective To evaluate the neurotoxicity, oxidative stress response and cytotoxicity of 42 tap water samples, 6 treated with activated carbon filters, 5 with reverse osmosis and 9 bottled waters. To compare the measured effects of the extracts with the mixture effects predicted from the detected concentrations and the relative effect potencies of the detected DBPs using the mixture model of concentration addition.Methods Mixtures of organic chemicals in water samples were enriched by solid phase extraction and tested for cytotoxicity and neurite outgrowth inhibition in the neuronal cell line SH-SY5Y and for cytotoxicity and oxidative stress response in the AREc32 assay.Results Unenriched water did not trigger neurotoxicity or cytotoxicity. After up to 500-fold enrichment, few extracts showed cytotoxicity. Disinfected water showed low neurotoxicity at 20- to 300-fold enrichment and oxidative stress response at 8- to 140-fold enrichment. Non-regulated non-volatile DBPs, particularly (brominated) haloacetonitriles dominated the predicted mixture effects of the detected chemicals and predicted effects agreed with the measured effects. By hierarchical clustering we identified strong geographical patterns in the types of DPBs and their association with effects. Activated carbon filters did not show a consistent reduction of effects but domestic reverse osmosis filters decreased the effect to that of bottled water.Impact statement Bioassays are an important complement to chemical analysis of disinfection by-products (DBPs) in drinking water. Comparison of the measured oxidative stress response and mixture effects predicted from the detected chemicals and their relative effect potencies allowed the identification of the forcing agents for the mixture effects, which differed by location but were mainly non-regulated DBPs. This study demonstrates the relevance of non-regulated DBPs from a toxicological perspective. In vitro bioassays, in particular reporter gene assays for oxidative stress response that integrate different reactive toxicity pathways including genotoxicity, may therefore serve as sum parameters for drinking water quality assessment.
引用
收藏
页码:126 / 135
页数:10
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