Cadmium
; Estuaries
; Isotopes
; Lead
; Marine pollution
; Mercury (metal)
; Metals
; Nitrogen
; Pollution
; Rivers
; Sediments
; Sewage
; Trace elements
; Accumulation
; Bohai Bay
; Carbon and nitrogen isotopes
; Tide gates
; Trace metal
; River pollution
; arsenic
; cadmium
; carbon 13
; chromium
; lead
; mercury
; nitrogen 15
; organic matter
; trace metal
; tungsten
; carbon
; heavy metal
; nitrogen
; water pollutant
; anthropogenic source
; baseline conditions
; carbon isotope
; concentration (composition)
; estuarine pollution
; geoaccumulation index
; isotopic ratio
; nitrogen isotope
; ocean tide
; sediment core
; sediment pollution
; trace metal
; tracer
; vertical profile
; Article
; atmospheric deposition
; China
; concentration (parameters)
; controlled study
; estuary
; geochemistry
; geography
; isotope tracing
; nitrogen deposition
; nonpoint source pollution
; pollution monitoring
; pollution transport
; sediment
; sewage
; total organic carbon
; waste water
; water pollution
; bay
; environmental monitoring
; river
; water pollutant
; Bohai Bay
; China
; Yongding River [China]
; Bays
; Carbon Isotopes
; China
; Environmental Monitoring
; Estuaries
; Geologic Sediments
; Metals, Heavy
; Nitrogen Isotopes
; Rivers
; Water Pollutants, Chemical
Scopus学科分类:
Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
A tide gate was built in 2010 to prevent seawater from moving upstream into the Yongdingxin River estuary in Bohai Bay, Northern China. We analysed the concentrations of Hg, Cd, Pb, TOC, TN, δ13C and δ15N and studied their variations in the surface layer and vertical profiles of sediment cores collected from the Yongdingxin River estuary. Contamination factors and geo-accumulation indices were calculated for each metal, which revealed high levels of contamination for Hg and Cd in the sediments, likely from anthropogenic sources. δ13C and δ15N were used as natural tracers to determine the sources of TOC and TN. The results revealed that sewage was the main source of TOC, while TN may have more than one source in the Yongdingxin River estuary. Sewage dominated trace metal pollution in the Yongdingxin River estuary. Our results provide a baseline for trace metal contamination in an estuary facing a large water project. � 2016 Elsevier Ltd
Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin, China; First Institute of Oceanography, State Oceanic Administration, Qingdao, China
Recommended Citation:
Sun C.,Wei Q.,Ma L.,et al. Trace metal pollution and carbon and nitrogen isotope tracing through the Yongdingxin River estuary in Bohai Bay, Northern China[J]. Marine Pollution Bulletin,2017-01-01,115(2018-01-02)