Investigation of heavy metals in sediments and Manila clams Ruditapes philippinarum from Jiaozhou Bay, China

Wang, Xiaoyu; Zhou, Yi; Yang, Hongsheng; Wang, Qing; Liu, Shilin

doi:10.1007/s10661-009-1262-5

Cited by 26 publications

(10 citation statements)

References 36 publications

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“…Samples were sealed in clean polyethylene bags and transferred to the laboratory for immediate storage in a cryogenic freezer (À80 C). Samples were freeze-dried and ground to pass a 150-mesh screen (Wang et al, 2010). All samples were quartered to provide representative sub-samples for further physicochemical analysis.…”

Section: Sediment Sampling and Analytical Methodsmentioning

confidence: 99%

Distribution and source analysis of heavy metal pollutants in sediments of a rapid developing urban river system

et al. 2018

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TitleDistribution and source analysis of heavy metal pollutants in sediments of a rapid developing urban river system. Heavy metal pollution of aquatic environments in rapidly developing industrial regions is of considerable global concern due to its potential to cause serious harm to aquatic ecosystems and human health. This study assessed heavy metal contamination of sediments in a highly industrialized urban watershed of eastern China containing several historically unregulated manufacturing enterprises. Total concentrations and solid-phase fractionation of Cu, Zn, Pb, Cr and Cd were investigated for 39 river sediments using multivariate statistical analysis and geographically weighted regression (GWR) methods to quantitatively examine the relationship between land use and heavy metal pollution at the watershed scale. Results showed distinct spatial patterns of heavy metal contamination within the watershed, such as higher concentrations of Zn, Pb and Cd in the southwest and higher Cu concentration in the east, indicating links to specific pollution sources within the watershed. Correlation and PCA analyses revealed that Zn, Pb and Cd were dominantly contributed by anthropogenic activities; Cu originated from both industrial and agricultural sources; and Cr has been altered by recent pollution control strategies. The GWR model indicated that several heavy metal fractions were strongly correlated with industrial land proportion and this correlation varied with the level of industrialization as demonstrated by variations in Chemosphere 207 (2018) 218e228 local GWR R 2 values. This study provides important information for assessing heavy metal contaminated areas, identifying heavy metal pollutant sources, and developing regional-scale remediation strategies.

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Section: Sediment Sampling and Analytical Methodsmentioning

confidence: 99%

Distribution and source analysis of heavy metal pollutants in sediments of a rapid developing urban river system

et al. 2018

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“…Clam farming, particularly along the northern coast of China, has become an important component of the marine fishery industry [17]. The production of this species has reached levels of over 3.0 million tons per annum in China, which accounts for approximately 70% of mudflat fishery production and 90% of total World production [18]. Furthermore, they are also widely used as sentinel species for monitoring the quality of estuarine and coastal waters.…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation of Trace Elements in Ruditapes philippinarum from China: Public Health Risk Assessment Implications

Yang

Zhao

Yan

et al. 2013

IJERPH

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The Manila clam Ruditapes philippinarum is one of the most important commercial bivalve species consumed in China. Evaluated metal burden in bivalve molluscs can pose potential risks to public health as a result of their frequent consumption. In this study, concentrations of 10 trace elements (Cu, Zn, Mn, Se, Ni, Cd, Cr, Pb, Hg and As) were determined in samples of the bivalve Ruditapes philippinarum, collected from nine mariculture zones along the coast of China between November and December in 2010, in order to evaluate the status of elemental metal pollution in these areas. Also, a public health risk assessment was untaken to assess the potential risks associated with the consumption of clams. The ranges of concentrations found for Cu, Zn, Mn, Se, Ni, Cd, Cr, Pb, Hg and As in R. philippinarum were 12.1–38.0, 49.5–168.3, 42.0–68.0, 4.19–8.71, 4.76–14.32, 0.41–1.11, 0.94–4.74, 0.32–2.59, 0.03–0.23 and 0.46–11.95 mg·kg−1 dry weight, respectively. Clear spatial variations were found for Cu, Zn, Cr, Pb, Hg and As, whereas Mn, Se, Ni, and Cd did not show significant spatial variation. Hotspots of trace element contamination in R. philippinarum can be found along the coast of China, from the north to the south, especially in the Bohai and Yellow Seas. Based on a 58.1 kg individual consuming 29 g of bivalve molluscs per day, the values of the estimated daily intake (EDI) of trace elements analyzed were significantly lower than the values of the accepted daily intake (ADI) established by Joint Food and Agriculture Organization/World Health Organization Expert Committee on Food Additives (JFAO/WHO) and the guidelines of the reference does (RfD) established by the United States Environmental Protection Agency (USEPA). Additionally, the risk of trace elements to humans through R. philippinarum consumption was also assessed. The calculated hazard quotients (HQ) of all trace elements were less than 1. Consequently, there was no obvious public risk from the intake of these trace elements through R. philippinarum consumption.

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“…Some elemental levels in R. philippinarum were compared with those reported previously in these geographical areas without classification purpose. The concentrations of Cu, Zn, Mn, Cd, and Ni in R. philippinarum collected in Jiaozhou Bay were analyzed by Li et al (2006) and Wang et al (2010). Zhao et al (2013b) determined the contents of Cu, Zn, and Cd in R. philippinarum from Deer Island which is close to the sampling sites in Dalian coast in this study.…”

Section: Elemental Concentrations In R Philippinarummentioning

confidence: 91%

“…The seven key variables (Mg, Cd, Sn, Sb, Cs, Ba, and U) selected to differentiate the geographical origins of clams in this study may be related to the surrounding sediments and seawater. Both Wang et al (2010) and Zhao et al (2012) found a statistically significant correlation (p < 0.05) between the concentration of Cd in Manila clam (R. philippinarum) and in surface sediments. Cd concentration in green-lipped mussel and oysters is also significantly correlated to its concentration in sediments (Chaharlang et al 2012;Yap et al 2002).…”

Section: Stepwise Linear Discriminant Analysismentioning

confidence: 95%

“…The multi-element fingerprinting technique, based on the element composition and multivariate statistics, has been successfully applied to determine geographic origins of various agricultural foods such as coffee, wine, and wheat, and so on (Muñiz-Valencia et al 2013;Šelih et al 2014;Zhao et al 2011). For clam, a lot of studies associated with heavy metal pollution have been done in many areas of the world (Méndez et al 2002;Tarique et al 2012;Wang et al 2010). However, no study on the authenticity identification of clams about their geographic origins or varieties has been reported.…”

Section: Introductionmentioning

confidence: 99%

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Identification of Jiaozhou Bay Clams (Ruditapes philippinarum) by Multi-element Fingerprinting Technique

Zhao

Zhang

2016

Food Anal. Methods

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The objective of this study was to develop an analytical method for protecting Jiaozhou Bay clam (Ruditapes philippinarum) with Protected Designation of Origin (PDO). The R. philippinarum samples were collected from three major producing areas (Jiaozhou Bay, Nantong coast, and Dalian coast) in China, and the Meretrix meretrix samples were from Nantong coast in May and September 2014. The contents of 46 elements in all clam samples were determined by inductively coupled plasma mass spectrometry. The obtained data were analyzed using analysis of variance, principal component analysis, and stepwise linear discriminant analysis. The results showed that both the geographical origin and season affected elemental contents in R. philippinarum. Seven elements (Mg, Cd, Sn, Sb, Cs, Ba, and U) independent of seasonal variation were selected as good indicators for discriminating the geographical origin of clams. Based on the discriminant models built with these seven elements, the predictions of the geographic origin gave an overall correct classification rate of 100.0 % and a cross-validation rate of 97.2 %. In addition, R. philippinarum and M. meretrix had their own elemental fingerprinting patterns and could be distinguished. Therefore, the multi-element analysis combined with multivariate statistics can be used for the identification of Jiaozhou Bay clam with PDO.

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Investigation of heavy metals in sediments and Manila clams Ruditapes philippinarum from Jiaozhou Bay, China

Cited by 26 publications

References 36 publications

Distribution and source analysis of heavy metal pollutants in sediments of a rapid developing urban river system

Distribution and source analysis of heavy metal pollutants in sediments of a rapid developing urban river system

Bioaccumulation of Trace Elements in Ruditapes philippinarum from China: Public Health Risk Assessment Implications

Identification of Jiaozhou Bay Clams (Ruditapes philippinarum) by Multi-element Fingerprinting Technique

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