A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Polyfluoroalkyl Amine Contributed to Nitrogen-Containing Disinfection Byproduct Formation in Corroded Iron Drinking Water Pipes
https://orcid.org/0000-0002-8398-4927
https://orcid.org/0000-0003-2129-4717
Chlorination may cause secondary perfluorooctanoic acid (PFOA) formation in drinking water containing polyfluoroalkyl amine, but the possibility of nitrogen-containing disinfection byproduct (N-DBP) formation during this process has not been recognized. Here, we found that polyfluoroalkyl amine could serve as a precursor for N-DBPs in corroded iron drinking water pipes in addition to the secondary generation of PFOA. By using nontarget analysis, 41 kinds of N-DBPs were identified in the water containing both ferrous and ferric corrosion products Fe(II)/FeOOH under an initial perfluorooctyl amine (PFOM) concentration of 100 ng/L (PF&Fe), which was significantly higher than the control samples. Most of the newly generated N-DBPs showed to have aromatic structures. The increased dissolved organic nitrogen and unchanged F– concentrations inferred that the amine group in PFOM is chemically reactive while the C7F15–perfluoroalkyl chain is relatively stable. The cell viability in the PF&Fe sample significantly decreased from 71.56% (before chlorination) to 24.24% after chlorination (p < 0.01), which indicated that the transformation from polyfluoroalkyl amine to PFOA and the formation of N-DBPs increased the water quality risks under chlorination in corroded iron drinking water pipes.
Polyfluoroalkyl amine enhanced the formation of nitrogen-containing disinfection byproducts in corroded iron drinking water pipes.
Polyfluoroalkyl Amine Contributed to Nitrogen-Containing Disinfection Byproduct Formation in Corroded Iron Drinking Water Pipes
https://orcid.org/0000-0002-8398-4927
https://orcid.org/0000-0003-2129-4717
Chlorination may cause secondary perfluorooctanoic acid (PFOA) formation in drinking water containing polyfluoroalkyl amine, but the possibility of nitrogen-containing disinfection byproduct (N-DBP) formation during this process has not been recognized. Here, we found that polyfluoroalkyl amine could serve as a precursor for N-DBPs in corroded iron drinking water pipes in addition to the secondary generation of PFOA. By using nontarget analysis, 41 kinds of N-DBPs were identified in the water containing both ferrous and ferric corrosion products Fe(II)/FeOOH under an initial perfluorooctyl amine (PFOM) concentration of 100 ng/L (PF&Fe), which was significantly higher than the control samples. Most of the newly generated N-DBPs showed to have aromatic structures. The increased dissolved organic nitrogen and unchanged F– concentrations inferred that the amine group in PFOM is chemically reactive while the C7F15–perfluoroalkyl chain is relatively stable. The cell viability in the PF&Fe sample significantly decreased from 71.56% (before chlorination) to 24.24% after chlorination (p < 0.01), which indicated that the transformation from polyfluoroalkyl amine to PFOA and the formation of N-DBPs increased the water quality risks under chlorination in corroded iron drinking water pipes.
Polyfluoroalkyl amine enhanced the formation of nitrogen-containing disinfection byproducts in corroded iron drinking water pipes.
Polyfluoroalkyl Amine Contributed to Nitrogen-Containing Disinfection Byproduct Formation in Corroded Iron Drinking Water Pipes
https://orcid.org/0000-0002-8398-4927
https://orcid.org/0000-0003-2129-4717
Chlorination may cause secondary perfluorooctanoic acid (PFOA) formation in drinking water containing polyfluoroalkyl amine, but the possibility of nitrogen-containing disinfection byproduct (N-DBP) formation during this process has not been recognized. Here, we found that polyfluoroalkyl amine could serve as a precursor for N-DBPs in corroded iron drinking water pipes in addition to the secondary generation of PFOA. By using nontarget analysis, 41 kinds of N-DBPs were identified in the water containing both ferrous and ferric corrosion products Fe(II)/FeOOH under an initial perfluorooctyl amine (PFOM) concentration of 100 ng/L (PF&Fe), which was significantly higher than the control samples. Most of the newly generated N-DBPs showed to have aromatic structures. The increased dissolved organic nitrogen and unchanged F– concentrations inferred that the amine group in PFOM is chemically reactive while the C7F15–perfluoroalkyl chain is relatively stable. The cell viability in the PF&Fe sample significantly decreased from 71.56% (before chlorination) to 24.24% after chlorination (p < 0.01), which indicated that the transformation from polyfluoroalkyl amine to PFOA and the formation of N-DBPs increased the water quality risks under chlorination in corroded iron drinking water pipes.
Polyfluoroalkyl amine enhanced the formation of nitrogen-containing disinfection byproducts in corroded iron drinking water pipes.
Polyfluoroalkyl Amine Contributed to Nitrogen-Containing Disinfection Byproduct Formation in Corroded Iron Drinking Water Pipes
Zhuang, Yuan (author) / Zhang, Yanli (author) / Gao, Yujia (author) / Yu, Dawei (author) / Shi, Baoyou (author)
ACS ES&T Water ; 5 ; 42-49
2025-01-10
Article (Journal)
Electronic Resource
English
Disinfection Methods for Swimming Pool Water: Byproduct Formation and Control
| DOAJ | 2018
| American Chemical Society | 2023
| British Library Online Contents | 2009
Disinfection byproduct formation kinetics of a water treatment plant on Kinmen Island
| Online Contents | 2015