Environmental Science & Technology, Год журнала: 2024, Номер unknown

Опубликована: Дек. 26, 2024

Industrial activities are a major source of organophosphorus flame retardants (OPFRs) and plasticizers in aquatic environments. This study investigated the distribution 40 OPFRs river impacted by industrial manufacturing plants Eastern China target analysis. Nontarget analysis using high-resolution mass spectrometry was further employed to identify novel compounds (NOPs). Thirty-four were detected water samples, with total concentrations 62.9–1.06 × 103 ng/L (median: 455 ng/L). Triphenylphosphine oxide diphenyl phosphoric acid ubiquitously up 620 127 ng/L, respectively. Among 26 identified NOPs, 17 reported for first time environment, including 14 organophosphate esters (especially 4 heterocycles 3 oligomers), 2 organophosphites, an organophosphonate. Bis(2,4-di-tert-butylphenyl) hydrogen phosphate 2,2-dimethylpropoxy(propyl)phosphinic high predicted persistence or toxicity widely detected, semiquantified 990 1.0 Structurally similar exhibited consistent variation trends, suggesting common emission source. Estimated annual discharges sea 20.6–37.0 kg/yr 30.8–161 NOPs. These findings indicate that contribute NOPs catchment its estuary, posing ecological risks both terrestrial marine

Язык: Английский