Accumulation of quaternary ammonium compounds as emerging contaminants in sediments collected from the Pearl River Estuary, China and Tokyo Bay, Japan

Xi DAI, Cuicui WANG, Chung Wah James LAM, Nobuyoshi YAMASHITA, Eriko YAMAZAKI, Yuichi HORII, Weifang CHEN, Xiaolin LI

Research output: Contribution to journalArticle

Abstract

In this work, the distribution of quaternary ammonium compounds (QACs) in two dated sediment cores, collected from the Pearl River Estuary (PRE) and Tokyo Bay (TB), were investigated to understand the historical input of QACs and their diagenetic behavior in urban estuarine environments. The vertical variation profiles of QAC concentrations showed that benzylalkyldimethyl ammonium compounds (BACs) and dialkyldimethyl ammonium compounds (DADMACs) were widely used during 1970s and 1980s both in China and Japan. The declining environmental concentrations of QACs suggested a compositional change of commodities and the effectiveness of emission control strategies. For the individual QAC homologues, BAC homologues decreased significantly over time, while DADMAC compositions remained relatively stable. The differences in concentration and composition profiles of BACs and DADMACs in the sediment cores provided useful information on the patterns of use of QACs in China and Japan, as well as their diagenetic behaviors in the sediments. Copyright © 2018 Elsevier Ltd. All rights reserved.
LanguageEnglish
Pages276-281
JournalMarine Pollution Bulletin
Volume136
Early online dateSep 2018
DOIs
Publication statusPublished - Nov 2018

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Ammonium compounds
ammonium compound
quaternary ammonium compounds
ammonium compounds
sediment contamination
Estuaries
Sediments
estuaries
Rivers
estuary
Impurities
Japan
China
pollutant
river
sediment
sediments
products and commodities
sediment core
estuarine environment

Citation

Dai, X., Wang, C., Lam, J. C. W., Yamashita, N., Yamazaki, E., Horii, Y., . . . Li, X. (2018). Accumulation of quaternary ammonium compounds as emerging contaminants in sediments collected from the Pearl River Estuary, China and Tokyo Bay, Japan. Marine Pollution Bulletin, 136, 276-281. doi: 10.1016/j.marpolbul.2018.09.027

Keywords

  • Quaternary ammonium compounds
  • Sediment
  • Organic pollutants
  • Pearl River Estuary
  • Tokyo Bay