Toxic heavy metals in sediments, seawater, and molluscs in the eastern and western coastal waters of Guangdong Province, South China

Zhang, Ling; Z, Shi; Zhang, Jingping; Jiang, Zhijian; Wang, Fei; Huang, Xiaoping

doi:10.1007/s10661-016-5314-3

Cited by 22 publications

(10 citation statements)

References 39 publications

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“…Sea cucumbers are species of echinoderm with mucous skin, which can potentially accumulate heavy metals by absorption from the polluted sediments in the sea (Luo et al, 2010;Wang et al, 2015;Zhang et al, 2016). The consumption of the sea cucumbers containing high level of heavy metals may potentially cause serious negative impacts on health, since they are persistent, bioaccumulative and toxic (King et al, 2010;Nghia et al, 2009;Noël et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Distribution and Chemoenzymatic Removal of Heavy Metals in Sea Cucumber <i>Acaudina leucoprocta</i>

Lin

Chen

Jia

et al. 2018

FSTR

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Sea cucumbers are traditional marine food in Asian countries. In this work, the chemical elements accumulated in sea cucumber Acaudina leucoprocta from the East China Sea were measured and analyzed. The contents of Zn, Mn, Cu, As, Pb, Cd and Cr increased with the increase of weight of A. leucoprocta. The levels of Pb and As in all the examined individuals were higher than the maximum residue limits (MRLs) permitted in foodstuffs. The metals were found to be selectively distributed in the body compartments of A. leucoprocta. The highest contents of heavy metals As, Pb were found in intestines and body wall, while the lowest in anus and internal organ. An efficient chemoenzymic method by combining proteolytic enzymatic hydrolysis with citric acid soaking was established to remove the heavy metals in sea cucumber A. leucoprocta. The concentrations of both As and Pb were decreased to below 0.5 mg kg _ 1 in all the samples.

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Section: Introductionmentioning

confidence: 99%

Distribution and Chemoenzymatic Removal of Heavy Metals in Sea Cucumber <i>Acaudina leucoprocta</i>

Lin

Chen

Jia

et al. 2018

FSTR

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“…Zhelin Bay in the Shantou area is an intensive mariculture area. Therefore, industrial and agricultural wastewater is an important source of metals in the area [ 13 ]. In addition, Hanjiang, as the second largest river in Guangdong Province, flows through the Chaoshan Plain and important industrial cities, such as Chaozhou and Jieyang, and into the South China Sea in Shantou City as the source, bringing a large number of pollutants to the coastal area [ 13 ].…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, industrial and agricultural wastewater is an important source of metals in the area [ 13 ]. In addition, Hanjiang, as the second largest river in Guangdong Province, flows through the Chaoshan Plain and important industrial cities, such as Chaozhou and Jieyang, and into the South China Sea in Shantou City as the source, bringing a large number of pollutants to the coastal area [ 13 ]. In addition to the reasons noted above, the large loss of coastal wetlands in Guangdong is also an important reason for the accumulation of heavy metals in the ocean, especially in the bay wetlands, which have an extremely strong self-purification capacity.…”

Section: Resultsmentioning

confidence: 99%

“…Ingested heavy metals can accumulate in vital organs such as the kidneys, bones, and liver, posing a threat to human health [ 8 , 9 ]. Marine heavy-metal pollution poses a significant health risk to humans due to the biomagnification effect, and the heavy metal pollution of marine products has gradually become a hot issue [ 10 , 11 , 12 , 13 ]. Therefore, it is of practical significance to study the content, distribution, and risk assessment of heavy metals in marine ecosystems to prevent marine ecological degradation and evaluate the pollution status of pollution in water.…”

Section: Introductionmentioning

confidence: 99%

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Pollution Assessment and SSD-Based Ecological Assessment of Heavy Metals in Multimedia in the Coast of Southeast China

Rong

et al. 2022

IJERPH

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Heavy metals in the ocean exist in various media and assessing heavy metal pollution in the multimedia in seawater is important for proposing effective strategies to protect marine ecosystem health. However, comprehensive coastal pollution assessments and SSD-based assessments of heavy metals have been limited from an international perspective. This study discusses the distribution, sources, interactions, associated environmental factors, and potential ecological risks related to heavy metal pollution. To attain this objective, several tools and models were considered. The partition coefficient between sediment and water was used to understand the ability of heavy metals to be adsorbed from seawater by sediment. The water quality index was applied to evaluate the comprehensive heavy metal pollution at different sampling sites. The species diversity index was calculated by calculating the concentration of chlorophyll a. The geo-accumulation and potential ecological risk indexes were employed for the sediments' general pollution characteristic of heavy metals. Species sensitivity distribution was used for ecological risk evaluation. The results indicated that heavy metal pollution and ecological risk (Cu, Pb, Zn, Cd, As, Cr and Hg) are not serious, and the pollution conditions remain safe. Only Cu, Pb, and Hg concentrations in seawater exceed the Nation Class I Water Quality Standard. The concentrations of heavy metals showed significant spatial characteristics. Fisheries activities and industrial effluent discharges were identified as the main anthropogenic sources. This study provides a comprehensive assessment of heavy metals in multi-media, and the results will provide valuable information for nearshore ecological management and risk avoidance.

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“…Compared with the coastal waters of the surrounding South China Sea, the overall quality of Jieshi Bay sea sediment is good (Liu et al, 2012;Wang et al, 2013;Zhang et al, 2015;Zhang et al, 2016;Wang et al, 2022;Zhang et al, 2022). We found that most of the heavy metal contents in the surface sediment was at the medium level, though the Hg and Zn contents were comparatively high in some sea areas.…”

Section: Distribution and Risk Assessment Of Hms In Sedimentmentioning

confidence: 99%

Spatial distribution and risk assessment of heavy metals in seawater and sediments in Jieshi Bay, Shanwei, China

Zhou

Cao²,

Hong³

et al. 2022

Front. Mar. Sci.

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The contamination of heavy metals due to human activities has attracted great attention and may lead to serious environmental problems. This research was performed on seawater, sediments, and organisms in Jieshi Bay, China. The level of Cu, Pb, Zn, Cd, Hg, and As, respectively, was measured in each environment to acquire a comprehensive understanding of their sources and distribution and to accomplish a risk assessment. The results showed that the concentration of heavy metals in autumn was higher than those in spring, and surface water has a higher heavy metal content than bottom water. The main sources of these heavy metals could be surface runoff and industrial wastewater discharge in the said bay. Hg was the main pollutant in the seawater. Hg, Cu, Zn, and Cd could easily accumulate in organisms than other heavy metal contents. In addition, even though the concentration of Pb did not exceed the Seawater Quality Standard, decision-makers should still be attentive to the Pb content in fish because of bioaccumulation from seafood product consumption.

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Toxic heavy metals in sediments, seawater, and molluscs in the eastern and western coastal waters of Guangdong Province, South China

Cited by 22 publications

References 39 publications

Distribution and Chemoenzymatic Removal of Heavy Metals in Sea Cucumber <i>Acaudina leucoprocta</i>

Distribution and Chemoenzymatic Removal of Heavy Metals in Sea Cucumber <i>Acaudina leucoprocta</i>

Pollution Assessment and SSD-Based Ecological Assessment of Heavy Metals in Multimedia in the Coast of Southeast China

Spatial distribution and risk assessment of heavy metals in seawater and sediments in Jieshi Bay, Shanwei, China

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