Influence of Sedimentation Rate on the Metal Contamination in Sediments of Bohai Bay, China

Zhang, Yan; Lu, Xueqiang; Shao, Xinghua; Liu, Honglei; Xing, Meinan; Zhao, Feng; Li, Xiaojuan; Yuan, Min

doi:10.1007/s00128-015-1599-0

Cited by 4 publications

(2 citation statements)

References 9 publications

(8 reference statements)

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“…Our dating method was based on those used in similar studies of adjacent areas and other estuaries with strong human activity, most of which investigated pollution histories in the environment [29,30,47,57,58,61,62,63,64]. Sedimentation rates were measured by the 210 Pb method in the Department of Ecology, Jinan University.…”

Section: Methodsmentioning

confidence: 99%

Levels of NP and BPA in the Pearl River Estuary, China: Fluctuations with Country Policy Changes over the Past 40 Years

Chen

Lan

Shi

et al. 2019

IJERPH

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Sediment cores were collected from four outlets in the Pearl River Estuary (Guangdong Province, China) and dated using the 210Pb method to investigate the pollution history of the area due to its relatively stable sedimentation status and hydrographic conditions in recent decades. The ages of the sediment cores were dated over 40 years (1968–2015). The concentrations at the four outlets ranged from 2.21 to 48.52 ng g−1 dw for nonylphenol and were non-detectable for 23.64 ng g−1 dw for bisphenol A (BPA), which exhibited a decreasing trend from north to south as well as seaward. The fluxes (2.84 to 112.91 ng cm−2 yr−1 and non-detectable to 59.33 ng cm−2 yr−1 for nonylphenol and bisphenol A, respectively) stabilized in the 1980s to 1990s due to the construction of sewage treatment systems. The fluxes increased again in the 21st century, which reached a peak ca. 2010 but declined in recent years due to the establishment of regulations and the decreasing number of industrial enterprises. Fluctuations in the pollution composition coincided with industrial development and governmental policies.

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Section: Methodsmentioning

confidence: 99%

Levels of NP and BPA in the Pearl River Estuary, China: Fluctuations with Country Policy Changes over the Past 40 Years

Chen

Lan

Shi

et al. 2019

IJERPH

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“…This area is one of the most highly developed and densely populated regions in China and accounts for one quarter of the Chinese Gross Domestic Product (GDP) [24]. Bohai Bay, located in the west of the Bohai Sea and near the city of Tianjin, is a typical semi-enclosed coastal bay, with a mean depth of 12.5 m [25]. The Bohai Bay has weak water exchange with the ocean which makes the physical self-cleaning capacity of the Bay very poor [23,26].…”

Section: Introductionmentioning

confidence: 99%

Distribution and Risk Assessment of Heavy Metals in Sediment from Bohai Bay, China

2019

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Sediment core and porewater samples from the Western coastal tidal flat in Bohai Bay, China, were collected for meals and physical-chemical properties analysis. The vertical distribution characteristics of eight metals along the core was investigated based on 137Cs and 210Pb radionuclide dating. The chemical fractions of six metals (Cu, Pb, Zn, Ni, Mn and Cd) were also measured based on the modified European Community Bureau of Reference (BCR) sequential extraction procedures to better understand the mobility and bioavailability of these metals in the sediment. In addition, geoaccumulation index (Igeo) and risk assessment code (RAC) are used to assess risk status of these metals in the environment. 210Pb measurement indicates a sedimentation rate of about −1.87 cm∙year−1. The metals Cu, Zn, Pb and Ni show similar vertical distributions throughout the core, while Mn and Cd show different distribution patterns. Ni, Cu, Pb and Zn are strongly associated with the residual fraction while Mn and Cd are dominant in the acid-soluble fraction. According to the estimated diffusive fluxes, the Zn ions were the most mobilized, followed by Cu, Ni, Pb, and to a lesser extent Cd. The result of Igeo shows that Ni in sediments does not reflect any pollution, and Cu, Pb and Zn are in a level from unpolluted to modest polluted throughout the core. Mn and Cd have obvious anthropogenic sources. Based on the RAC, Cd and Mn pose a high to very high risk to the local environment, respectively, due to the significant percentage of exchangeable fraction. Clay content is significantly positively correlated with Ni, Cu, Al and Fe, and Cu, Pb, Zn and Ni might originate from the same sources or be influenced by similar geochemical processes. River runoff and atmospheric deposition are important sources for heavy metals, and since 1998, domestic sewage discharge might have had an important influence on the source of heavy metals (except for Cd and Mn).

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Influence of sedimentation rate on the environmental capacity of total nitrogen in the water of Bohai Bay, China

Zhang

Tian

et al. 2021

J Soils Sediments

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Influence of Sedimentation Rate on the Metal Contamination in Sediments of Bohai Bay, China

Cited by 4 publications

References 9 publications

Levels of NP and BPA in the Pearl River Estuary, China: Fluctuations with Country Policy Changes over the Past 40 Years

Levels of NP and BPA in the Pearl River Estuary, China: Fluctuations with Country Policy Changes over the Past 40 Years

Distribution and Risk Assessment of Heavy Metals in Sediment from Bohai Bay, China

Influence of sedimentation rate on the environmental capacity of total nitrogen in the water of Bohai Bay, China

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