Occurrence, spatial distribution, and partitioning behavior of marine lipophilic phycotoxins in the Pearl River Estuary, South China

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yongsheng Cui
  • Jincan Shen
  • Yim Ling Mak
  • Meng Yan
  • Jiaxue Wu
  • Paul K.S. Lam

Detail(s)

Original languageEnglish
Article number119875
Journal / PublicationEnvironmental Pollution
Volume310
Online published1 Aug 2022
Publication statusPublished - 1 Oct 2022

Abstract

The occurrence, spatial distribution, and partitioning behavior of 17 marine lipophilic phycotoxins (MLPs) in surface and bottom seawater, particulate organic matter (POM), and surface sediment from the Pearl River Estuary (PRE) were investigated to understand current contamination and the potential risks to marine ecosystems in this region. Nine MLPs were detected, including azaspiracid1−3, gymnodimine, okadaic acid, dinophysistoxin 1−2, pectenotoxin2 (PTX2), and homoyessotoxin, with Σ17MLP concentrations ranging 545–12,600 pg L−1 and 619−8,800 pg L−1 in surface and bottom seawater, respectively; 0–294 ng g−1 and 0.307–300 ng g−1 dry weight (dw) in surface and bottom POM, respectively; and 3.90–982 pg g−1 dw in surface sediment. Lower Σ17MLP levels in the seawater were found at the mouth of the PRE, and gradually increased with increasing distance offshore. According to the calculated partition coefficient, the affinity of MLPs for the aquatic environment components was as follows (from highest to lowest): POM > seawater > sediment. Overall, the distribution and migration of MLPs in the PRE may depend on partition coefficients, the organic carbon fraction, and environmental factors.

Research Area(s)

  • Marine lipophilic phycotoxins, Particulate organic matter, Partitioning behavior, Seawater, Sediment

Citation Format(s)

Occurrence, spatial distribution, and partitioning behavior of marine lipophilic phycotoxins in the Pearl River Estuary, South China. / Li, Jing; Ruan, Yuefei; Wu, Rongben; Cui, Yongsheng; Shen, Jincan; Mak, Yim Ling; Wang, Qi; Zhang, Kai; Yan, Meng; Wu, Jiaxue; Lam, Paul K.S.

In: Environmental Pollution, Vol. 310, 119875, 01.10.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review