scholarly journals Do the total mercury concentrations detected in fish from Czech ponds represent a risk for consumers?

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Sehonova Pavla ◽  
Harustiakova Danka ◽  
Mikula Premysl ◽  
Medkova Denisa ◽  
Malacova Kristyna ◽  
...  
Keyword(s):  
Aquatic Ecosystems ◽  
Total Mercury ◽  
Absorption Spectrometry ◽  
Mercury Content ◽  
Predatory Fish ◽  
Average Content ◽  
Fish Tissues ◽  
The Czech Republic ◽  
Mercury In Fish ◽  
Commission Regulation

AbstractMercury is one of the important pollutants of the environment. Therefore, it’s necessary to monitor quantity of mercury especially in aquatic ecosystems. The main goal of the presented study was to compare the content of total mercury in tissues of fish coming from the Czech Republic, an important carp exporter, with focus on comparison of mercury content between 3 different ponds, its comparison between different fish species and between different tissues of the same species, and estimation whether the mercury content in tissues meets the limit given in the Commission Regulation (EC) No. 1881/2006 or not. Total mercury concentration was measured in 90 fish specimen sampled from three ponds (Velky Kocelovicky, Mysliv and Zehunsky) in autumn 2018. The values of total mercury in fish tissues was measured by atomic absorption spectrometry. The content of total mercury in the tissues decreased as follows: muscle > liver > gonads > scales. The highest average content of total mercury in muscle was 0.1517 ± 0.0176 mg/kg coming from pike caught in Velky Kocelovicky pond. In contrast, the lowest average content of total mercury in muscle 0.0036 ± 0.0003 mg/kg was found in carp tissue coming from the locality of Zehunsky pond. We confirmed that the predatory fish are more exposed to mercury than non-predatory fish. None of the monitored localities exceeded the set regulatory limit. Thus, our study shows that fish coming from these ponds are safe in terms of total mercury content.

scholarly journals Mercury content in the wool of domestic animals in Cherepovets

2018 ◽  
Vol 7 (3) ◽  
pp. 19-23
Author(s):  
Ekaterina Sergeevna Bachina ◽  
Olga Yurievna Rumiantseva ◽  
Elena Sergeevna Ivanova ◽  
Viktor Trofimovic Komov ◽  
Marina Andreevna Guseva ◽  
...  
Keyword(s):  
Mercury Concentration ◽  
Statistical Difference ◽  
Total Mercury ◽  
Domestic Animals ◽  
Mercury Content ◽  
Average Content ◽  
Comparison Analysis ◽  
Vologda Region ◽  
Total Mercury Concentration ◽  
Mercury Analyzer

Mercury (Hg) and its compounds are considered as one of the ten major dangerous groups of chemicals. The content of mercury in the coat was 136 cats and 113 dogs in the territory of the Vologda Region in Cherepovets. The total mercury concentration in the wool samples was measured on a mercury analyzer RA-915 +. The values of the mercury index in cats range from less than 0,001 mg / kg to 13,00 mg / kg, in dogs from less than 0,001 mg / kg to 1,858 mg / kg. Statistical difference in the content of mercury in wool between cats and dogs was revealed. The Hg content in cats is 3,5 times higher than the dogs have. Comparison analysis showed the concentration of mercury in the wool of cats and dogs have no statistically significant differences. The authors noted that cats had 4 times more mercury who ate fish. The average content of Hg in the wool of dogs is slightly different for those who ate fish.

Method validation for the determination of total mercury in fish muscle by cold vapour atomic absorption spectrometry

2012 ◽  
Vol 29 (4) ◽  
pp. 617-624 ◽  
Author(s):  
A.P. Nascimento Neto ◽  
L.C.S. Magalhães Costa ◽  
A.N.S. Kikuchi ◽  
D.M.S. Furtado ◽  
M.Q. Araujo ◽  
...  
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Method Validation ◽  
Total Mercury ◽  
Absorption Spectrometry ◽  
Fish Muscle ◽  
Mercury In Fish ◽  
Cold Vapour

Mercury Content in Commercially Available Finfish in the United States

2014 ◽  
Vol 77 (8) ◽  
pp. 1361-1366 ◽  
Author(s):  
DENNIS P. CLADIS ◽  
ALISON C. KLEINER ◽  
CHARLES R. SANTERRE
Keyword(s):  
United States ◽  
New England ◽  
Channel Catfish ◽  
Total Mercury ◽  
Atlantic Cod ◽  
Fish Muscle ◽  
The United States ◽  
Mercury Content ◽  
Mercury In Fish ◽  
King Mackerel

Seventy-seven finfish species (300 composites of three fish) were obtained from commercial vendors in six regions of the United States: Great Lakes, mid-Atlantic, New England, northwest, southeast, and southwest. Total mercury in fish muscle tissue ranged from 1 ppb (channel catfish) to 1,425 ppb (king mackerel). Of the top 10 most commonly consumed seafoods in the United States, all finfish species, including salmon species (13 to 62 ppb), Alaskan pollock (11 ppb), tilapia (16 ppb), channel catfish (1 ppb), Atlantic cod (82 ppb), and pangasius (swai) (2 ppb), had low total mercury concentrations. However, two large predatory species, king mackerel and swordfish (1,107 ppb), contained mercury concentrations above the current U.S. Food and Drug Administration action level of 1,000 ppb, indicating that consumers may be unaware that species that are high in mercury are being sold in the marketplace.

scholarly journals MERCURY CONTENT IN MUSCLE TISSUE OF EUROPEAN GRAYLING (THYMALLUS THYMALLUS (L.)) IN THE RIVERS OF THE VOLOGDA REGION

2018 ◽  
pp. 35-40
Author(s):  
A. S. Komarova ◽  
E. V. Ugryumova ◽  
N. Yu. Tropin ◽  
A. E. Shilova ◽  
A. A. Sokolova ◽  
...  
Keyword(s):  
Muscle Tissue ◽  
Fish Species ◽  
Mercury Concentration ◽  
Mercury Content ◽  
Water Bodies ◽  
Predatory Fish ◽  
Average Content ◽  
Thymallus Thymallus ◽  
European Grayling ◽  
Vologda Region

The article presents information about the mercury content in the muscle tissue of the European grayling Thymallus thymallus (L.) in 11 rivers of the Vologda region (Tagazhma, Vozhega, Votcha, Kostyuga, Tiksna, Sheben’ga, Pyrnug, Zemtsovka, Yurmanga, Bol’shaya Rechka and Yontala) for the period of 2011–2015. The average content of toxicant ranged from 0,04 mg/kg in individuals of the river Sheben’ga up to 0,21 mg/kg in the rivers Yurmanga and Bol’shaya Rechka. Four fish noted an excess of the permissible level of sanitary and hygienic standards (SanPiN 2.3.2.1078-01. 2.3.2.) for non-predatory fish species (0,3 mg/kg). Young grayling contains an average of 0,06–0,10 mg/kg mercury in muscle tissue, individuals five to six years old contain 0,26 and 0,27 mg/kg, respectively. A comparison of the level of mercury concentration in the muscle tissue of European grayling with that of other fish species showed that the Hg content does not go beyond the revealed background values for water bodies of the Vologda region.

scholarly journals The relationship between the mercury concentration in fish muscles and scales/fins and its significance

2011 ◽  
Vol 9 (6) ◽  
pp. 1109-1116 ◽  
Author(s):  
Rostislav Červenka ◽  
Antonín Bednařík ◽  
Josef Komárek ◽  
Markéta Ondračková ◽  
Pavel Jurajda ◽  
...  
Keyword(s):  
Fish Species ◽  
Absorption Spectrometry ◽  
Fish Muscle ◽  
Mercury Content ◽  
Mercury Contamination ◽  
Coefficient Of Determination ◽  
Fish Scales ◽  
Fish Muscles ◽  
Mercury In Fish ◽  
The Relationship

AbstractThe determination of mercury in fish typically involves analysis of muscles. For predicting the concentration of mercury in fish muscle on the basis of the analysis of fish scales or fins, the relationship between total mercury concentrations in fish muscles and in fish scales and fins was studied. Mercury content in fish muscles, scales and fins was determined by atomic absorption spectrometry with thermal decomposition of the sample in a flow of oxygen. A number of scale treatments were applied in order to remove impurities and to enhance the prediction quality. For scale treatment, 40 min of washing with DI water in an ultrasonic bath is recommended. A coefficient of determination r2= 0.93 for the relationship between Hg concentrations in muscles and scales was achieved for 40 fish among the different fish species tested (European bream, perch, roach) from the Hamry Reservoir, Czech Republic. With respect to fin sampling, the coefficient of determination r2 for these fish was 0.86. The analysis of fish scales and caudal fins is a useful screening tool for assessing the relative mercury contamination of monitored fish. The method of sampling scales is not suitable for fish species with small scales such as brown trout.

Mercury in fish in the Derwent Estuary, Tasmania, and its relation to the position of the fish in the food chain

1975 ◽  
Vol 26 (2) ◽  
pp. 223 ◽  
Author(s):  
DA Ratkowsky ◽  
TG Dix ◽  
KC Wilson
Keyword(s):  
Heavy Metals ◽  
Food Chain ◽  
Total Mercury ◽  
Mercury Content ◽  
Food Regulation ◽  
A Value ◽  
Invertebrate Predators ◽  
Mercury In Fish ◽  
Zinc Cadmium ◽  
High Concentrations

Total mercury concentrations are reported for 258 individuals representing 16 species of finfish from the Derwent Estuary, Tasmania. Mercury concentrations in the muscle tissue varied between undetectable levels and a value of 2.0 mg/kg in one specimen of a species of shark. Irrespective of species, the area encompassing Ralphs Bay contained a higher percentage of fish with mercury concentrations in excess of the Tasmanian Food Regulation limit of 0.5 mg/kg than any other area of the Estuary. RaIphs Bay is the area in which oysters were found in a previous study to contain extraordinarily high concentrations of other heavy metals, particularly zinc, cadmium and copper. The fish's position in the food chain appeared to be an important factor determining its mercury content. Approximately 51 % of individual fish of species whose diet consists predominantly of other fish had mercury concentrations in excess of 0.5 mg/kg. In contrast, 24% of invertebrate predators and only 7 % of individuals of herbivorous habit had mercury concentrations in excess of 0.5 mg/kg.

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