Abstract

In the present study, 40 freshwater sediments collected near 14 wastewater treatment plants (WWTPs) across the United States were analyzed for eight N-nitrosamines by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Three N-nitrosamines were detected for the first time in freshwater sediments in units of ng/g dry weight at the specified detection frequency: N-nitrosodibutylamine (NDBA; 0.2-3.3; 58%), N-nitrosodiphenylamine (NDPhA; 0.2-4.7; 50%), and N-nitrosopyrrolidine (NPYR; 3.4-19.6; 18%). At least one N-nitrosamine was detected in 70% (28/40) of sediments analyzed. Non-detect values in units of ng/g dw were obtained for N-nitrosodimethylamine (NDMA; . 0.05). This is the first report on the occurrence of the carcinogenic N-nitrosamines NDBA, NDPhA, and NPYR in U.S. freshwater sediments. Discovery of this phenomenon warrants further research on the compounds' origin, environmental persistence, aquatic toxicity, and risks posed.

Original languageEnglish (US)
JournalJournal of Hazardous Materials
DOIs
StateAccepted/In press - Jan 18 2016

Fingerprint

Nitrosamines
freshwater sediment
Waste Water
Fresh Water
Wastewater treatment
Sediments
dibutylnitrosamine
N-Nitrosopyrrolidine
Dimethylnitrosamine
Liquid chromatography
Tandem Mass Spectrometry
Liquid Chromatography
Mass spectrometry
Toxicity
liquid chromatography
persistence
mass spectrometry
toxicity
Weights and Measures
wastewater treatment plant

Keywords

  • Environmental fate
  • N-Nitrosamine
  • Sediment contamination
  • Wastewater treatment plant

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry
  • Environmental Engineering

Cite this

Occurrence of N-nitrosamines in U.S. freshwater sediments near wastewater treatment plants. / Gushgari, Adam J.; Halden, Rolf; Venkatesan, Arjun K.

In: Journal of Hazardous Materials, 18.01.2016.

Research output: Contribution to journalArticle

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