Total mercury, organic mercury and selenium in liver and kidney of a South American coastal dolphin

2008 ◽  
Vol 154 (1) ◽  
pp. 98-106 ◽  
Author(s):  
Tércia G. Seixas ◽  
Helena do A. Kehrig ◽  
Monica Costa ◽  
Gilberto Fillmann ◽  
Ana Paula M. Di Beneditto ◽  
...  
Keyword(s):  
Total Mercury ◽  
South American ◽  
Organic Mercury ◽  
Liver And Kidney

scholarly journals Determination of total mercury in muscle, intestines, liver and kidney tissues of cormorant (Phalacrocorax carbo), great crested grebe (Podiceps cristatus) and Eurasian buzzard (Buteo buteo)

2012 ◽  
Vol 50 (No. 2) ◽  
pp. 61-68 ◽  
Author(s):  
P. Houserova ◽  
J. Hedbavny ◽  
D. Matejicek ◽  
S. Kracmar ◽  
J. Sitko ◽  
...  
Keyword(s):  
Mercury Concentration ◽  
Total Mercury ◽  
Adult Population ◽  
The United States ◽  
Phalacrocorax Carbo ◽  
Buteo Buteo ◽  
Carson River ◽  
Liver And Kidney ◽  
Podiceps Cristatus ◽  
Great Crested Grebe

The total mercury concentrations in four tissues (muscle, intestines, liver and kidney) of aquatic birds (cormorant – Phalacrocorax carbo and great crested grebe – Podiceps cristatus) and Eurasian buzzard (Buteo buteo) were determined by cold vapour atomic absorption spectrometry (CV-AAS) using an Advanced Mercury Analyser AMA 254. The results of the direct CV-AAS analyses of homogenised solid samples were in very good agreement with those obtained by CV-AFS and CV-AAS analyses after acid digestion. Mercury concentrations in the tested tissues of adult populations of great crested grebe and cormorant were nearly twice as high as in the Eurasian buzzard. Significantly higher mercury concentrations were found in the liver and kidney of the cormorant (7-times and 2-times, respectively) compared to great crested grebe. The highest mercury concentration (39.2 mg/kg DM) was found in liver of adult population of cormorant while the content of mercury in younger cormorants was approx. 6-times lower (5.8 mg/kg DM). The total mercury concentration in liver was 6-times higher (2–3-times in muscle and kidney) but 13-times lower then those of the cormorant population living in Japan (Tokyo, Lake Biwa) and in the United States (Nevada, Carson River), respectively.

Mercury concentrations of the axial muscle tissues of some marine fishes of the continental shelf adjacent to Tasmania

1985 ◽  
Vol 36 (4) ◽  
pp. 509 ◽  
Author(s):  
JD Thomson
Keyword(s):  
Total Mercury ◽  
Marine Fishes ◽  
Management Tool ◽  
Published Data ◽  
Organic Mercury ◽  
Commercial Fish ◽  
Total Length ◽  
Muscle Tissues ◽  
Wet Weight ◽  
Health Regulations

The mercury concentrations of 35 commercial and potentially commercial fish species from Tasmanian waters were determined. Four species had mean total mercury concentrations above 0.5 mg kg-1 wet weight and in all four there were individuals with concentrations above 1.5 mg kg-1 wet weight. Two species of shark, Parascyllium ferrugineum and Cephaloscyllium laticeps (with sample sizes of 4 and 1, respectively), had total mercury concentrations above the limit of a mean of 1.0 mg kg-1 wet weight set by the Tasmanian Public Health regulations. Concentrations in the species were compared with published data. Organic mercury concentrations in different species ranged from 40 to 96% of the total mercury concentrations. In fewer than half the species were total mercury concentration and total length or weight significantly correlated, indicating that neither total length nor weight could be used as a universal management tool to control human mercury intake from fish consumption.

A Case History; Minamata Mercury Pollution in Japan – From Loss of Human Lives to Decontamination

1991 ◽  
Vol 23 (1-3) ◽  
pp. 283-290 ◽  
Author(s):  
Akira Kudo ◽  
Shojiro Miyahara
Keyword(s):  
Mercury Concentration ◽  
Industrial Wastewater ◽  
Total Mercury ◽  
Surface Sediments ◽  
Sea Water ◽  
Human Beings ◽  
Organic Mercury ◽  
Yatsushiro Sea ◽  
History Of ◽  
Minamata Bay

At Minamata Bay in Japan, more than 100 people lost their lives and many thousands more were permanently paralyzed from eating mercury contaminated fish. In the long history of water pollution, this was the first known case where the natural bioaccumulation (in fish) of a toxicant from an industrial wastewater killed a large number of human beings. The mercury, discharged from a factory, was deposited on the bottom of the Bay and has remained there since the 1950's. The fate of the mercury was traced by measuring 268 mercury concentrations in the surface sediments at Yatsushiro Sea (outside of the Bay) during the last 14 years. Twenty-four sampling stations were established to collect samples at the same location every year. Samples were analyzed for total mercury concentrations. The concentrations of mercury in the surface sediments at the Sea were not alarming. Only 33 samples exceeded a mercury concentration of 1 ppm. The dispersion of the mercury from the Bay, however, was clearly documented with the data. On average, 3.7 tons of the mercury was transported outside from the Bay every year. A decontamination project started in 1984 dramatically decreased the flow of mercury from the Bay to the Sea. A historic rainfall in 1982 also ‘purified' the surface sediments. Organic mercury concentration in the sea water was 5.1 ng/l while total mercury was 120 ng/l at the center of the Bay in 1985.

Trace elements in the liver and kidney of South American sea lion ( Otaria byronia ) pups from northern Chile

2020 ◽  
Vol 36 (3) ◽  
pp. 992-1000
Author(s):  
Danai Olea ◽  
Macarena Santos‐Carvallo ◽  
Hernán Gaete ◽  
María‐Gabriela Lobos ◽  
Maritza Sepúlveda
Keyword(s):  
Trace Elements ◽  
South American ◽  
Northern Chile ◽  
Sea Lion ◽  
South American Sea Lion ◽  
Liver And Kidney

EFFECTS OF ACID, BASE, AND AMMONIUM SULFATE ON THE PROTEIN-BINDING PROPERTIES OF METHYLMERCURY IN CYTOPLASMIC PREPARATIONS FROM AVIAN LIVER AND KIDNEY

1973 ◽  
Vol 53 (4) ◽  
pp. 647-651
Author(s):  
R. S. BUSH ◽  
R. R. MARQUARDT
Keyword(s):  
Ammonium Sulfate ◽  
Perchloric Acid ◽  
Mercuric Chloride ◽  
Total Mercury ◽  
Acid Base ◽  
Binding Properties ◽  
Methylmercuric Chloride ◽  
Percent Protein ◽  
Liver And Kidney ◽  
Total Tissue

Commercial chick starter diets containing 4 ppm Hg added as mercuric chloride or 5 ppm Hg added as methylmercuric chloride were fed to chicks starting at 1 day of age and continuing for 4 wk. The intracellular and total mercury levels of liver and kidney from birds fed each diet and the effects of treatments with NaOH, with HCl, with perchloric acid, and with ammonium sulfate and of dialysis on protein-bound cytoplasmic methylmercury were determined. Livers and kidneys from chicks fed mercuric chloride contained three times more mercury than the control, whereas those from chicks fed methylmercuric chloride contained 15 times greater concentrations than controls. The microsomes and cytoplasm from chicks fed all diets contained approximately 5 and 55% of the total tissue mercury, respectively. Dialysis of kidney cytoplasm removed 50% of the total mercury. No appreciable dissociation of an ammonium sulfate-precipitated protein–mercury complex occurred when this was dissolved in water and treated with ammonium sulfate, perchloric acid, or NaOH, whereas HCl treatment dissociated 45% of the protein-bound mercury into the supernatant. When liver cytoplasm samples were made more alkaline, a greater proportion of the total mercury was found in the protein fraction. Acidification also increased the percent protein-bound mercury to a maximum at pH 1.5, followed by a linear decrease at pH levels below 1.5.

scholarly journals Localization of inorganic and organic mercury in the liver and kidney of Cyprinus carpio by autometallography

2012 ◽  
Vol 7 (2) ◽  
pp. 71-73 ◽  
Author(s):  
M. Mela ◽  
F.F. Neto ◽  
S.R. Grötzner ◽  
I.S. Rabitto ◽  
D.F. Ventura ◽  
...  
Keyword(s):  
Cyprinus Carpio ◽  
Organic Mercury ◽  
Liver And Kidney ◽  
Inorganic And Organic

Atomic Absorption Determination of Total, Inorganic, and Organic Mercury in Blood

1972 ◽  
Vol 55 (5) ◽  
pp. 966-971 ◽  
Author(s):  
Laszlo Magos ◽  
Thomas W Clarkson
Keyword(s):  
Atomic Absorption ◽  
Methyl Mercury ◽  
Total Mercury ◽  
Inorganic Mercury ◽  
Mean Deviation ◽  
Organic Mercury ◽  
Absorption Determination ◽  
The Difference ◽  
Mercury In Blood

Abstract The atomic absorption method described will determine total mercury and, selectively, inorganic mercury. Organic mercury is measured as the difference between total and inorganic mercury. Lower levels of mercury in samples of human blood (4.1 ng Hg/ml) can be determined with the following precision: total mercury 0.6%, inorganic mercury 8.7%, and organic mercury 5.6%. The mean deviation of 2 sets of analyses, one carried out with the method described in this paper and the other with neutron activation analysis, was 3.6%. Organic (presumably methyl) mercury accounted for 66% of the total mercury in blood in a population with minimum exposure. The red cell-to-plasma ratio of organic (methyl) mercury averaged 13.9 in a population with moderate exposure to mercury in food.

Twelve Years of Observations of Mercury Concentrations in Yatsushiro Sea (Japan)

1988 ◽  
Vol 20 (6-7) ◽  
pp. 193-197 ◽  
Author(s):  
S. Miyahara ◽  
M. Schintu ◽  
T. Kauri ◽  
A. Kudo
Keyword(s):  
Surface Sediment ◽  
Total Mercury ◽  
Considerable Increase ◽  
Surface Sediments ◽  
Organic Mercury ◽  
Minamata Disease ◽  
River Waters ◽  
Yatsushiro Sea ◽  
Minamata Bay

The fate of the mercury which caused the tragedy of Minamata disease has been monitored for a period of 12 years determining mercury contents in the surface sediment of Yatsushiro Sea. Twenty-four sampling stations were selected over an area of 636 km2. Mercury concentrations, both organic and inorganic, in water were also determined within the Bay and the Sea in 1985. Mercury has been dispersing from the Bay to the Sea. From 1975 to 1986 there was a considerable increase of mercury contents in the surface sediments. However, there is no alarming level of mercury in the sediments of Yatsushiro Sea and the level is mostly less than 1 ppm. Mercury concentrations in the water of Minamata Bay were as much as 6 times higher compared to those of Yatsushiro Sea. The highest level in the Bay was 125.3 ng/l (total mercury) whereas the highest level in the Sea was 25.8 ng/l. The proportion of organic mercury in the total mercury ranged from 0.9% to 13.7 % in the Sea. The proportion was lower than those found in river waters.

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