Monthly variations of unregulated brominated disinfection by-products in chlorinated water are correlated with total bromine.

ABSTRACT: Brominated disinfection by-products (Br-DBPs) can form during the chlorination of drinking water in treatment plants (DWTP). Regulations exist for a small subset of Br-DBPs; however, hundreds of unregulated Br-DBPs have been detected, and limited information exists on their occurrence, concentrations, and seasonal trends. Here, a data-independent precursor isolation and characteristic fragment (DIPIC-Frag) method were optimized to screen chlorinated waters for Br-DBPs. There were 553 Br-DBPs detected with m/z values ranging from 170.884 to 497.0278 and chromatographic retention times from 2.4 to 26.2 min. With MS² information, structures for 40 of the 54 most abundant Br-DBPs were predicted. The method was then applied to a year-long study in which raw, clear well, and fi

SUBMITTER: Watts C 

PROVIDER: S-EPMC10702899 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature