Spatiotemporal trends of ultraviolet absorbents in oysters from the Pearl River Estuary, south China during 2015–2020

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

2 Scopus Citations
View graph of relations


  • Hao Hu
  • Yang Li
  • Guangyuan Lu
  • Huizhen Li
  • Jing You


Original languageEnglish
Article number121298
Journal / PublicationEnvironmental Pollution
Online published16 Feb 2023
Publication statusPublished - 15 Apr 2023


Ultraviolet absorbents (UVAs) are widely used in various industrial materials, pharmaceuticals, and personal care products, resulting in their frequent occurrences in sediment, water, and biota. However, our understanding of the spatiotemporal characteristics and long-term contamination status of UVAs is still limited. Here, a 6-year biomonitoring study with oysters during wet and dry seasons was conducted to examine the annual, seasonal, and spatial characteristics of UVAs in the Pearl River Estuary (PRE), China. The concentrations of Σ6UVA ranged from 9.1 to 119 (geometric mean ± standard deviation: 31 ± 22) ng/g dry wt. and peaked in 2018. Significant spatiotemporal variations in UVA contamination were observed. The concentrations of UVAs in oysters during the wet season were higher than the dry season, and concentrations in the more industrialized eastern coast were higher than the western coast (p < 0.05). Environmental factors, including precipitation, temperature, and salinity in water significantly impacted the UVA bioaccumulation in the oysters. The present study highlights that long-term biomonitoring with oysters provided valuable insight in the magnitude and seasonal variation of UVAs in this highly dynamic estuary. © 2023 Elsevier Ltd

Research Area(s)

  • Bioaccumulation, Environmental factors, Long-term biomonitoring, PRE, Seasonal distribution