Heavy Metals in Edible Tissues of Benthic Organisms From Samsun Coasts, South Black Sea, Turkey and Their Potential Risk to Human Health

Abstract

Abstract:The present study was aim to determine the concentrations of copper, cobalt, lead, zinc, cadmium, manganese, nickel and iron in the edible tissues of Liocarcinus depurator (decapoda), Rapana venosa (gastropoda) and Mytilus galloprovincilais (mollusca) collected from Samsun coasts of the Black Sea, Turkey in 2010. These biomonitor species are major food sources of benthic ecosystem. Exposing to heavy metals at higher concentrations might be toxic to demersal fish species and also humans. The concentrations of the metals were carried out using Flame Atomic Absorption Spectrophotometer (UNICAM 929). Metal concentrations in L. depurator, R. venosa and M. galloprovincilais decrease in the order: Fe > Zn > Mn > Cu > Ni > Pb > Co > Cd; Fe > Zn > Cu > Pb > Mn > Cd > Ni and Fe > Zn > Cu > Pb > Mn > Co > Ni > Cd, respectively. The results showed that the Fe and Zn concentrations were the highest in edible tissues of the three benthic organisms, respectively. Mn was higher in the edible tissues of L. depurator than those in other species, while R. venosa and M. galloprovincilais shows more of Cu and Pb levels. The estimates of EWI and EDI indicated no health risk as values are lower than the allowed tolerable levels cited by internationals committees. Based on the above results of this study, metal accumulation in the biomonitor demersal species study did not exceed the permissible limits set for heavy metals by FAO/WHO.

High bioaccumulation of cadmium and other metals in Patagonian edible gastropods

“…In general, the digestive gland has been the target of study due to its involvement in metabolic processes and its role in detoxification (Regoli & Orlando 1994;Marigomez et al 2002;Wang & Ke 2002). Since most marine gastropods are edible, many authors have also assessed their potential risk to human consumption due to their ability to accumulate toxic metals (Conti et al 2012a;Copat et al 2013;Bat et al 2016;Lahbib et al 2016).…”

Elements in Soft Tissues of the Young Mediterranean Mussel Mytilus galloprovincialis Lam. 1819 Collected in Sevastopol Bay (Crimea, Black Sea): Effects of Age, Sex, Location, and Principal Morphometric Parameters

“… a: this work; b: [ 36 ]; c: [ 35 ]; d: [ 79 ]; e: [ 37 ], f: [ 34 ], g: [ 38 ]; h [ 26 ]; i: [ 27 ]; j: [ 28 ]; k: [ 25 ]; l: [ 42 ]; m: [ 41 ]; n: [ 31 ]; o: [ 40 ]; p: [ 30 ]; q: [ 29 ]; r: [ 50 ]; *: transformed from wet to dry weight basis using the factor 6.29 [ 80 ]; †: measured semi-quantitatively. …”

“…In a number of studies [ 19 , 20 , 21 , 22 , 23 , 24 ], the effect of the sampling site on trace element accumulation in mussels was investigated in the Mediterranean and Atlantic coastal areas. The trace element levels in soft tissues of M. galloprovincialis from different areas of the Black Sea also demonstrated significant spatial variability [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ], especially for the animals of older age groups [ 43 , 44 ]. Typically, the authors compare pristine and polluted areas in terms of trace element abundance in soft tissues.…”

Trace element bioaccumulation and health risk assessment derived from leg consumption of the marsh frog, Pelophylax ridibundus (Pallas, 1771)

“…Although frog meat is not consumed frequently in some cuisines including Turkey, it is important to evaluate metal accumulation because it is preferred as human food in many European countries (Şereflişan and Alkaya, 2016). Similarly, there are studies examining the effects of heavy metal accumulation on human health in some marine species such as Solen marginatus (Taş and Sunlu, 2019), Rapana venosa (Bat et al, 2016), which are not widely consumed in Turkey. Today, meeting the demand for frogs through farms has become even more critical (Helfrich et al, 2009).…”