Distribution and relationships of selected trace metals in molluscs and associated sediments from the Gulf of Aden, Yemen

Szefer, Piotr; Ali, Anis A. Mohamad; Ba-Haroon, A.A.; Rajeh, A.A.; Gel̵don, J.; Nabrzyski, M

doi:10.1016/s0269-7491(99)00108-6

Cited by 127 publications

(53 citation statements)

References 25 publications

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“…Mytilus spp. have been considered to be potential biomonitors of toxic metals in marine ecosystems (Fowler and Oregioni, 1976;Koide et al, 1982;Szefer et al, 1997Szefer et al, , 1999aChase et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Study on the contamination of heavy metals and their correlations in mollusks collected from coastal sites along the Chinese Bohai Sea

Wang

Liang

Shi

et al. 2005

Environment International

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Mollusks living in seas can accumulate heavy metals, and may serve as excellent passive biomonitors. During a period of 1 year, bioaccumulation of As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, and Zn was examined in nine kinds of mollusks (Rapana venosa, Neverita didyma, Scapharca subcrenata, Mytilus edulis, Amusium, Crassostrea talienwhanensis, Meretix meretrix, Ruditapes philippinarum, and Mactra veneriformis), which were collected at eight coastal sites along the Chinese Bohai Sea. Metal concentrations were directly determined by inductively coupled plasma mass spectrometer (ICP-MS). Two certified reference materials, dogfish muscle (DORM-2) and mussel (GBW 08571), were used to validate the methods, and the recoveries were within 83.72 -112.30% of the certified values. Bioaccumulation of metals varied strongly among sampling sites and species. Statistical analysis (one-way ANOVA) indicated that different species examined showed different bioaccumulation of metals, and perhaps they could be used as potential biomonitors to investigate the contamination levels of heavy metals. Principal component analysis (PCA) and correlation analysis were used to study the relationships between these heavy metals. The results showed that, in nine mollusks' tissues, there are significant correlations between these elements in adjacent main group or subgroup in periodic table of elements. D

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Section: Introductionmentioning

confidence: 99%

Study on the contamination of heavy metals and their correlations in mollusks collected from coastal sites along the Chinese Bohai Sea

Wang

Liang

Shi

et al. 2005

Environment International

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“…The elements can be ordered as follows in terms of the regression line slopes: Zn4Cu4Mn. A greater slope means a higher increase in a metal's bioavailability, parallel to the increase in its concentration in the medium (Szefer et al, 1999). If we compare the two bays we see that the slope for these metals is greater in Algeciras Bay.…”

Section: Metal In Watersmentioning

confidence: 87%

Biomonitoring of heavy metals in the coastal waters of two industrialised bays in southern Spain using the barnacle Balanus amphitrite

Morillo

Usero

Bakouri

2008

Chemical Speciation & Bioavailability

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This paper evaluates the bioavailability of As, Cd, Cu, Mn, Hg, Ni and Zn in the coastal waters of the two most important bays in southern Spain (Cá diz and Algeciras). Concentrations of these metals were measured in the bodies of Balanus amphitrite barnacles in 2005 and 2006. Seawater samples were collected from the same sites as the barnacles to assess metal concentrations and to gain additional information on the environmental conditions. Analysis of variance (ANOVA) showed significant geographic differences in the local bioavailability of metals to the barnacles, as reflected in the concentrations of accumulated metals. Balanus amphitrite accumulates large amounts of metals, with high concentration factors for Zn, Cd, Cu and Mn, in relation to the concentrations in marine waters.

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“…It is preferably determined using dry weight concentrations, but these units must still be reported [29]. This form of the ratio is typically used for metals [77][78][79] and contaminants other than nonionic organic compounds. Many nonionic organic compounds preferentially partition into lipids; hence, normalizing concentrations of contaminants to lipid concentration in the tissue is the accepted practice to reduce the variability both within and between species.…”

Section: Quality Of the Overlying Watermentioning

confidence: 99%

Measuring bioaccumulation of contaminants from field‐collected sediment in freshwater organisms: A critical review of laboratory methods

Geest

Poirier

Sibley

et al. 2010

Enviro Toxic and Chemistry

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Abstract-To be effective, decision-making frameworks require data from robust and reliable test methods. Using standard methods allows for more effective comparison between studies and application of data, and it reduces unnecessary duplication of efforts. Laboratory methods to assess the toxicity of sediment have been standardized and extensively used; however, procedures for measuring the bioaccumulation of contaminants from sediment into aquatic organisms need further standardization. Bioaccumulation methods using freshwater invertebrates and fish exposed to field-contaminated sediment were reviewed to identify important similarities and differences in method protocols, test conditions that need to be controlled, and data gaps. Although guidance documents are available, great variation still exists in exposure techniques used in tests, which may potentially affect the estimation of bioaccumulation. The techniques most consistent across studies include the use of Lumbriculus variegatus as a test species, test temperatures between 20 and 258C, and a 28-d exposure with no addition of food, followed by purging of organisms. Issues that were inconsistent between studies or remained unspecified, which should be addressed, include the bioaccumulation potential of other test species, loading density of organisms, and sediment-to-water ratio. In addition to proper evaluation of the various exposure techniques and conditions, a need exists for more consistent inclusion of quality control procedures during testing. Environ. Toxicol. Chem. 2010;29:239129: -240129: . # 2010

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Distribution and relationships of selected trace metals in molluscs and associated sediments from the Gulf of Aden, Yemen

Cited by 127 publications

References 25 publications

Study on the contamination of heavy metals and their correlations in mollusks collected from coastal sites along the Chinese Bohai Sea

Study on the contamination of heavy metals and their correlations in mollusks collected from coastal sites along the Chinese Bohai Sea

Biomonitoring of heavy metals in the coastal waters of two industrialised bays in southern Spain using the barnacle Balanus amphitrite

Measuring bioaccumulation of contaminants from field‐collected sediment in freshwater organisms: A critical review of laboratory methods

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