Metal Concentrations in Two Commercial Tuna Species from an Active Volcanic Region in the Mid-Atlantic Ocean

Torres, Paulo; Rodrigues, Armindo; Soares, Lília; Garcia, Patrícia

doi:10.1007/s00244-015-0249-1

Cited by 31 publications

(15 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, much higher Cd levels in tunas from Ecuador (2.4 mg kg −1 wet wt mean value and a range from <0.011 to 17.000 mg/kg −1 wet wt) were reported by Araújo and Cedeño-Macías [56] possibly due to emissions from industrialized countries and the volcanic activity of the Eastern Pacific Ocean. Other studies in samples of diverse fishing areas do not show such high levels of Cd, but they exceeded the levels established by the EU [11,25,48,57,58]. Concerning high Cd concentrations detected mostly in our NASSA specimens is mainly affected by the pollution of the cities in the North Aegean Sea coastline that became polluted due to marine, road and air traffic as well as due to domestic and industrial waste [30,32].…”

Section: Discussioncontrasting

confidence: 50%

“…Agyekum Akwasi et al [57] attributed the high Pb level in processed tuna from Ghana to the Pb load in the environment. In fact, many studies describe an accumulating trend for Pb in the edible part of tuna e.g., [11,25]. Nevertheless, albacore do not seem to be an important contamination source of Pb for humans.…”

Section: Discussionmentioning

confidence: 99%

“…Individuals eating high quantities of tuna may have increased health risks such as developmental anomaly of the brain of infants and neurological problems in adults [22]. Cadmium may induce skeletal weakness, reproductive deficiencies, neurological and digestive disorders, cancers, mutations, and kidney dysfunction [7,23,24,25]. Lead is another known toxicant for human considered as a toxic element due to its biochemical effects which includes hypertension, hematological effects, neurological problems and renal dysfunction [23].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bioaccumulation Levels and Potential Health Risks of Mercury, Cadmium, and Lead in Albacore (Thunnus alalunga, Bonnaterre, 1788) from The Aegean Sea, Greece

Stamatis¹,

Kamidis²,

Pigada³

et al. 2019

IJERPH

View full text Add to dashboard Cite

Aegean Sea albacore (T. alalunga), fresh or processed, is marketed locally in Greece or exported, mainly to Japan, Italy, Spain, and France. To provide information for consumers and biomonitoring programs and assess the potential human health risks, concentrations of mercury (Hg), cadmium (Cd) and lead (Pb) were determined in albacore edible muscle samples from two fishing grounds of the Aegean Sea, Greece via graphite furnace atomic absorption spectrometry (GF-AAS). Of the 82 individuals, 28 contained Cd and three contained Pb above the permissible limits set by the European Union (0.1 mg kg−1 wet wt and 0.3 mg kg−1 wet wt, respectively). None of the samples contained mercury above the limit (1.0 mg kg−1 wet wt). Potential health risks to human via dietary intake of albacore were estimated by the total target hazard quotients (TTHQs), which indicated that the consumers could acquire health problems due to consumption of Aegean Sea albacore. Thus consequently, concentrations of toxic heavy metals in albacore, especially mercury, must be monitored regularly and comprehensively with respect to consumer health.

show abstract

Section: Discussioncontrasting

confidence: 50%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bioaccumulation Levels and Potential Health Risks of Mercury, Cadmium, and Lead in Albacore (Thunnus alalunga, Bonnaterre, 1788) from The Aegean Sea, Greece

Stamatis¹,

Kamidis²,

Pigada³

et al. 2019

IJERPH

View full text Add to dashboard Cite

show abstract

“…The concentration tendency was to decrease in time for the studied period, it could be ascribed to the constant increase of skipjack tuna captures in the eastern Pacific, whose reported volumes in 2009 were 239 408 metric tons (mt) while in 2016 were 342 579 mt (IATTC, 2018), therefore an increased volume of this tuna species in Ecuadorian canneries. Skipjack tuna has been reported to have in general lower Hg than albacore (Thunnus alalunga) or white-style tuna (0.407 mg kg À1 ; Burger and Gochfeld, 2004); meanwhile Torres et al (2016) reported that bigeye tuna (Thunnus obesus) has a higher concentration (0.139 mg kg À1 ) than skipjack (0.04 mg kg À1 ), because the latter feeds mainly on invertebrates whilst the former is piscivorous. Another plausible reason for the tendency is improvement over the years in the handling practices during initial refrigeration-freezing using brine on the boat.…”

Section: Resultsmentioning

confidence: 99%

Low mercury, cadmium and lead concentrations in tuna products from the eastern Pacific

Ormaza-González

Ponce-Villao

Pin-Hidalgo

2020

Heliyon

View full text Add to dashboard Cite

Tuna species: Skipjack ( Katsuwonus pelamis ), yellowfin ( Thunnus albacares ) and bigeye ( Thunnus obesus ) are mainly processed into canned products (loins, solid pack, flakes) either in water or oil, and pre-cooked frozen loins. The National Institute of Fisheries of Ecuador (ISO/IEC 17025 certified), which is the official control laboratory, samples and analyses production batches of companies exporting to the European Union in order to ensure the quality control of Ecuadorean tuna product. From 2009 to 2016, 2572 samples have been analysed (by standard methods) for mercury, cadmium, and lead. The averages were 0.24 ± 0.14; 0.03 ± 0.03 and 0.05 ± 0.05 mg kg −1 (wet weight) respectively; which are well below the norms; i.e., total mercury: 1 mg kg −1 ; Lead: 0.3 mg kg −1 and Cadmium: 0.1 mg kg −1 according to the EU maximum limits. Over time mercury levels in the sample seemed to decrease but for cadmium and lead no clear pattern was observed. Additionally; samples of tuna can products taken at random from local vendor stores gave concentrations of: Mercury: 0.043 ± 0.004 mg kg −1 ; Cadmium: 0.012 ± 0.002 mg kg −1 ; Lead: below detection limit (0.01 mg kg −1 ). There were a few cases (15 out of 2572: 0.58%) of samples with readings near or just over-limit concentrations; of these, 12 corresponded to Cd, two to Pb and one to Hg. Some of them can be considered statistical outliers as well as cross contamination during analytical procedures. Raw tuna samples have given similar or lower concentrations. No significant statistical correlation was found between Hg, Cd and Pb values, this would suggest that the bioaccumulation of each metal is independent of each other. Literature reports that surface dissolved Hg, Cd, and Pb in the eastern Pacific are in the range of 2–18 ng kg −1 . Assuming suggested bioaccumulation of 2–6 times, the end concentration in the tuna would be 0.012–0.042; 0.036–0.108 and 0.010–0.027 μg kg −1 of Hg, Cd, and Pb respectively, that would be one order (or more) below the safe consumption limit. Most, if not all the tuna processed in Ecuador is captured in the eastern Pacific and within its EEZ. Ecuadorian canned tuna complies with stringent standards for presence of these metals; therefore, it can be considered safe to be consumed from the point of view of these metal concentrations. However, further studies should assess metal concentrations exclusively from Ecuadorian tuna captured close to coastal and insular areas.

show abstract

“…Lead, as a non-essential metal, acts usually as a potent toxic species, even at very low concentrations. Its bioaccumulation in tissues [8] leads to intoxication, dysfunction of a variety of organs, cellular and tissue damage, decreased fertility, and cell death [9,10,11,12,13,14,15].…”

Section: Introductionmentioning

confidence: 99%

Quality Indicators and Possible Ecological Risks of Heavy Metals in the Sediments of three Semi-closed East Mediterranean Gulfs

Stamatis¹,

Kamidis²,

Pigada³

et al. 2019

Toxics

View full text Add to dashboard Cite

Pollution with copper (Cu), lead (Pb), zinc (Zn), chromium (Cr), and nickel (Ni) heavy metals of the surface sediments collected from three semi-closed East Mediterranean Gulfs, namely Kavala, Strymonikos, and Ierissos Gulfs, North Aegean Sea, Greece, was investigated to evaluate potential benthic ecological risks. The mean concentrations of the studied metals decrease according to the order: Zn > Pb > Cr > Ni > Cu (176.50, 166.23, 127.41, 43.12, and 33.64 mg kg−1 dry weight). Quality indicators and possible ecological risks for metals in surface sediments were evaluated at 60 sampling sites of these three gulfs using the contamination factor (CF), the contamination degree (CD), the pollution load index (PLI), the geoaccumulation index (Igeo), the potential risk factor (PRFi), and the potential ecological risk index (PERI). Based on Igeo, the Ierissos Gulf sampling sites IER 2, 3, 7, and 9 exhibit moderate Pb pollution, whereas the sampling sites IER 6 and 8 show moderate to strong and strong Pb pollution, respectively. Based on the PRFi and PERI, the studied heavy metals did not pose any significant environmental risks for most of the investigated sites except IER 6 and 8 sampling sites, which may pose considerable environmental risk for Pb. To evaluate potential sources for each metal, multivariate techniques including hierarchical cluster analysis and ANOVA were used.

show abstract

Metal Concentrations in Two Commercial Tuna Species from an Active Volcanic Region in the Mid-Atlantic Ocean

Cited by 31 publications

References 51 publications

Bioaccumulation Levels and Potential Health Risks of Mercury, Cadmium, and Lead in Albacore (Thunnus alalunga, Bonnaterre, 1788) from The Aegean Sea, Greece

Bioaccumulation Levels and Potential Health Risks of Mercury, Cadmium, and Lead in Albacore (Thunnus alalunga, Bonnaterre, 1788) from The Aegean Sea, Greece

Low mercury, cadmium and lead concentrations in tuna products from the eastern Pacific

Quality Indicators and Possible Ecological Risks of Heavy Metals in the Sediments of three Semi-closed East Mediterranean Gulfs

Contact Info

Product

Resources

About