Significant correlation of Cd, Cu, Pb and Zn in sediments and oysters (Saccostrea cucullata) collected from Qeshm Island, Persian Gulf, Iran

Abstract

The relationships are evaluated between the heavy metal species in sediments and the accumulation by the soft tissues of Saccostrea cucullata collected from the northern and southern coasts of Qeshm Island, Persian Gulf. The sequential extraction technique was employed to fractionate the sediment into non resistant and resistant fractions. Data from sequential extractions indicated that the metals were mainly associated with the residual fraction at the north coast and with non residual fractions at the south coast. The results showed that the best correlations were observed between heavy metals concentrations in soft tissues and the fractions in the southern sediment. Note that the bioavailability of trace metals is influenced by the chemical characteristics and properties of the sediment. Therefore, the present results generally supported the use of soft tissues of S. cucullata as a more accurate biomonitoring organism for Cu, Pb and Cd in sediments from the southern coast of Qeshm Island, Persian Gulf.

Trace Metal Element Analysis in Some Seafood in the Coastal Zone of the Red River (Ba Lat Estuary, Vietnam) by Green Sample Preparation and Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

“…In another study, significant correlation of Cd, Cu, Pb, and Zn in sediments and oysters (Saccostrea cucullata) collected from Qeshm Island, Persian Gulf, Iran, was also demonstrated [36]. e authors revealed the soft tissues of S. cucullata as a more accurate biomonitoring organism for Cu, Pb, and Cd in sediments in this region [36]. Our results also showed that higher trace metal element contents in both crustaceans and molluscs in benthic sediment than in pelagic fishes (p < 0.05) were observed in the coastal zone of the Red River (Table 4, Figure 2).…”

“…Nour [7] studied on the contents of Fe, Mn, Cu, Zn, Pb, Ni, Cd, and Co in molluscan shells and associated surface sediments on the Gulf of Aqaba and Red Sea coasts, Egypt, and found that metal bioaccumulation of molluscan species was consistent with the enrichment factors for sediments. In another study, significant correlation of Cd, Cu, Pb, and Zn in sediments and oysters (Saccostrea cucullata) collected from Qeshm Island, Persian Gulf, Iran, was also demonstrated [36]. e authors revealed the soft tissues of S. cucullata as a more accurate biomonitoring organism for Cu, Pb, and Cd in sediments in this region [36].…”

Mobility, ecotoxicity, bioaccumulation and sources of trace elements in the bottom sediments of the Rożnów reservoir

“…The correlation between the contaminant content in the environment and in organisms is a useful method to evaluate the monitoring potential of organisms (Klink et al, 2019 ; Vignati et al, 2019 ). Numerous data indicate that there are direct relationships between the element content in the benthic organism and bottom sediments (Shirneshan et al, 2013 ). Table 4 shows correlations between different geochemical fractions of trace elements in the sediment and the mussel tissues.…”

“…The total content of trace elements in sediments had no effect on their bioavailability and mobility in water ecosystems; however, their chemical forms had ecotoxicological value (Shirneshan et al, 2013 ). On the other hand, the authors of the present study believe that the problem of mobility and bioavailability of trace elements is more complex and can be controlled both directly, by the total trace element content, and indirectly, related to the presence of the element in a given fraction; it can also depend on the properties of the element itself and the physicochemical factors of the medium.…”

“…A useful tool for the actual assessment of the risk related to the presence of trace elements in the bottom sediment, i.e., their bioavailability, ecotoxicity, is biological methods including biotests and bioindicators (Apitz, 2011 ; Hise et al, 2020 ). Biotests allow for the assessment of toxicity associated with the presence of contaminants in bottom sediments, while bioindicators enable the assessment of the level of bioavailability and bioaccumulation of a given compound (Apitz, 2011 ; Shirneshan et al, 2013 ; Vignati et al, 2019 ; Hise et al, 2020 ). In the case of aquatic ecosystems, bottom sediments are the main sorbents of contaminants whose concentrations in them reach much higher values than in water (Ashokkumar et al, 2009 ; Rosado et al, 2016 ).…”