Regional multi-compartment ecological risk assessment: Establishing cadmium pollution risk in the northern Bohai Rim, China

Shi, Yunfeng; Wang, Ruoshi; Lü, Yonglong; Shi, Song; Johnson, Andrew C.; Sweetman, Andrew J.; Jones, Kevin C.

doi:10.1016/j.envint.2016.05.024

Cited by 44 publications

(14 citation statements)

References 31 publications

(30 reference statements)

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“…The location of the study area. (Shi et al 2016(Shi et al , 2018Xu et al 2019). In total, 20 effective LC/EC/IC 50 toxicity data and 16 NOEC/LOEC toxicity data on toxic effect for Cd were collected for native species in China.…”

Section: Species Sensitivity Distribution Methodsmentioning

confidence: 99%

“…The HQ and SSD methods belong to the group of entropy methods. PERA, which consists of the SSD model and joint probability curve (JPC), is more frequently used to quantitatively evaluate the ecological risk of pollutants (Xu et al 2015;Shi et al 2016;Zeng et al 2016). The advantages and disadvantages of different methods have been briefly discussed in previous studies, but only qualitative, non-comprehensive descriptions have been provided (Yang et al 2007;Xu et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Ecological risk assessment of soil cadmium in China’s coastal economic development zone: a meta-analysis

Sun

Wang

et al. 2020

Ecosyst Health Sustain

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The coastal area of China has faced major strategic planning and environmental pollution, including heavy metals pollution. This study aimed to provide a comprehensive evaluation of the effects of Cd pollution on the ecology in coastal areas of China. A soil Cd pollution database of 300 counties or districts in coastal areas was screened from academic dissertations and academic journal papers. Based on the database, the ecological risk was evaluated using entropy methods and probabilistic ecological risk assessment (PERA), and the advantages and disadvantages of these methods were analyzed. In China's coastal areas, the soil Cd content in 10.33% of the counties was higher than the minimum of risk control value (1.5 mg/kg), and in 4.00% of the counties was higher than the maximum of risk control value (4.0 mg/kg). The ecological risks were highly compatible with national strategic planning areas. Guangxi Province, Zhejiang Province, and Guangdong Province ranked among the top three coastal areas for soil Cd contamination, and the ecological risks were 18.80%, 17.89%, and 15.77% at the maximum no-effect concentration/lowest effect concentration (NOEC/LOEC) level. This study can provide insights to policymakers regarding the protection of ecosystems threatened by heavy metals in the process of regional strategic planning.

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Section: Species Sensitivity Distribution Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ecological risk assessment of soil cadmium in China’s coastal economic development zone: a meta-analysis

Sun

Wang

et al. 2020

Ecosyst Health Sustain

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“…Pathways for Cd to enter the Bohai Sea might be complicated, possibly including riverine input (mainly the Yellow River and Haihe River), atmospheric deposition (the combustion of fossil fuels such as coal and petroleum), direct discharge, and biological processes [103,104]. In Bohai Bay, the anthropogenic source of Cd might include additives used by local factories for manufacturing synthetic rubber and PVC materials [65], the electroplating industry including aeronautics and astronautics, electronic components, and equipment manufacturing in Tianjin [18], and agricultural non-point source pollution. The industrial effluent and agricultural runoff containing Cd could be discharged into the Bohai Bay via some small rivers (e.g., the Yongdinghe and Daguhe) around Bohai Bay.…”

Section: Source Identification Of Metalsmentioning

confidence: 99%

“…A number of studies have used sediment profiles to describe the contamination history of trace metals in different environments [11][12][13][14][15]. In marine sediment, many approaches (e.g., the geoaccumulation index, potential ecological risk index, sediment quality guidelines, and enrichment factor) have been widely used around the world to assess the contamination of heavy metals based on the total concentration of metals in sediments [5,[16][17][18][19]. In addition, the fractions of metals are often used to assess the mobility, toxicities and ecological risk of metals in the sediment based on sequential extraction procedures [5][6][7][20][21][22].…”

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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“…, Shi et al. ). However, without an attempt at relative risk ranking, it is not yet possible to conclude this with certainty.…”

Section: Introductionmentioning

confidence: 99%

Which metal represents the greatest risk to freshwater ecosystem in bohai region of china?

Lü

Johnson

et al. 2017

Ecosyst Health Sustain

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Abstract. Metals discharged from industrial effluents, agricultural wastewater, and sewage runoff by rapid urbanization are of concern as contaminants of freshwater ecosystem because of their persistence and high toxicity to aquatic organisms. This study attempted to identify which metal posed the greatest risk to freshwater ecosystem in the Bohai Region, China. The metals arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), zinc (Zn), lead (Pb), nickel (Ni), mercury (Hg), iron (Fe), and manganese (Mn) were compared against norfloxacin and gamma-hexachlorocyclohexane (lindane). By comparing the median reported environmental and ecotoxicity concentrations, it showed that Cu, Fe, Zn, Mn, and Cr were the top five metals of concern. Of these, Cu was deemed to represent the highest risk and Hg the lowest risk. The risks for all metals were higher than those for norfloxacin and lindane. Almost all the metals except Hg had water concentrations that exceeded levels where ecotoxicity effects had been recorded in the literature. A comparison with the measurements across the UK rivers suggested that all metals examined had water concentrations about 5-to 10-fold higher than the UK median values except for Cu, Fe, Cd, and Pb. The Fuyang River, a tributary of the Haihe River Basin, seemed to be the location with the highest metal concentrations. However, comparing the post-2010 period to [2000][2001][2002][2003][2004][2005][2006][2007][2008][2009], concentrations of all the metals had fallen except for Fe and Mn, so risks have decreased over the last 7 yr with the greatest improvements for Cd and Pb. While metals still pose high risks to freshwater ecosystem in this region, there is encouragement that some control measures are taken into effect.

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Regional multi-compartment ecological risk assessment: Establishing cadmium pollution risk in the northern Bohai Rim, China

Cited by 44 publications

References 31 publications

Ecological risk assessment of soil cadmium in China’s coastal economic development zone: a meta-analysis

Ecological risk assessment of soil cadmium in China’s coastal economic development zone: a meta-analysis

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

Which metal represents the greatest risk to freshwater ecosystem in bohai region of china?

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