Occurrence and Characteristics of Microplastic Pollution in Xiangxi Bay of Three Gorges Reservoir, China

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

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Author(s)

  • Xiong Xiong
  • Hongjuan Hu
  • Chenxi Wu
  • Yonghong Bi
  • Yonghong Wu
  • Bingsheng Zhou
  • Jiantong Liu

Detail(s)

Original languageEnglish
Pages (from-to)3794-3801
Journal / PublicationEnvironmental Science and Technology
Volume51
Issue number7
Online published16 Mar 2017
Publication statusPublished - 4 Apr 2017

Abstract

Microplastic pollution in inland waters is receiving growing attentions. Reservoirs are suspected to be particularly vulnerable to microplastic pollution. However, very limited information is currently available on pollution characteristics of microplastics in reservoir ecosystems. This work studied the distribution and characteristics of microplastics in the backwater area of Xiangxi River, a typical tributary of the Three Gorges Reservoir. Microplastics were detected in both surface water and sediment with concentrations ranging from 0.55 × 105 to 342 × 105 items km-2 and 80 to 864 items m-2, respectively. Polyethylene, polypropylene, and polystyrene were identified in surface water, whereas polyethylene, polypropylene, and polyethylene terephthalate, and pigments were observed in sediment. In addition, microplastics were also detected in the digestion tracts of 25.7% of fish samples, and polyethylene and nylon were identified. Redundancy analysis indicates a weak correlation between microplastics and water quality variables but a negative correlation with water level of the reservoir and Secchi depth. Results from this study confirm the presence of high abundance microplastics in reservoir impacted tributaries, and suggest that water level regulated hydrodynamic condition and input of nonpoint sources are important regulators for microplastic accumulation and distribution in the backwater area of reservoir tributaries.

Research Area(s)

  • MARINE-ENVIRONMENT, PLASTIC DEBRIS, GREAT-LAKES, COASTAL WATERS, SEDIMENTS, RIVER, FISH, WASTE, PHYTOPLANKTON, MICROBEADS

Citation Format(s)

Occurrence and Characteristics of Microplastic Pollution in Xiangxi Bay of Three Gorges Reservoir, China. / Zhang, Kai; Xiong, Xiong; Hu, Hongjuan; Wu, Chenxi; Bi, Yonghong; Wu, Yonghong; Zhou, Bingsheng; Lam, Paul K. S.; Liu, Jiantong.

In: Environmental Science and Technology, Vol. 51, No. 7, 04.04.2017, p. 3794-3801.

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