scholarly journals Some metabolic interrelationships among cadmium, lead, copper and zinc: Results from a field survey in Cd-polluted areas in japan part four: Heavy metal ratios and correlations.

1981 ◽  
Vol 30 (3) ◽  
pp. 115-124 ◽  
Author(s):  
SOICHIRO IWAO ◽  
MINORU SUGITA ◽  
KENZABURO TSUCHIYA
Keyword(s):  
Heavy Metal ◽  
Field Survey ◽  
Copper And Zinc ◽  
Cadmium Lead ◽  
Metal Ratios

INFLUENCE OF THE ECOLOGICAL STATE OF THE SEREPOK RIVER (VIETNAM) ON ACCUMULATION OF HEAVY METALS IN ORGANS OF FISH

2017 ◽  
pp. 98-105
Author(s):  
Ngo The Cuong ◽  
Tran Hoan Quoc ◽  
Svetlana Vasilievna Zolotokopova
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
River Water ◽  
Bottom Sediments ◽  
Heavy Metal Concentration ◽  
Industrial Areas ◽  
Industrial Regions ◽  
Cadmium Lead ◽  
Sarotherodon Galilaeus ◽  
Water Bottom

The article focuses on the study of change of containing heavy metals (zinc, copper, iron, cadmium, lead, arsenic) in the abiotic and biotic components of the Serepok river (Vietman) influenced by wastewater discharge from industrial areas. Heavy metal content was determined in the river water and bottom sediments in the four zones: above and within the boundaries of industrial regions Xoa Phu and Tam Thang and in two water reservoirs situated below the boundaries of those industrial areas. Tilapia Galilean ( Sarotherodon galilaeus ), Hemibagrus ( Hemibagrus ), and sazan ( Cyprinus carpio ) caught in these areas were the hydrobionts under study in which liver, gills, skeleton and muscles accumulation of heavy metals was detected. In the organs of fish caught in the river within industrial region, heavy metals concentration was 3-7 times higher. The greatest concentration of heavy metals was found in the liver and gills of fish caught in the boundaries of industrial regions, the least concentration was in the muscles. In most cases, significant correlation between heavy metal concentration in organs of fishes and in river water, bottom sediments has been revealed.

scholarly journals Change of the cadmium, lead and uranium content in the soil pore water depending on the temperature in conditions of low soil moisture

2019 ◽  
Vol 55 (2) ◽  
pp. 212-222
Author(s):  
G. A. Sokolik ◽  
S. V. Ovsiannikova ◽  
M. V. Papenia
Keyword(s):  
Heavy Metal ◽  
Moisture Content ◽  
Pore Water ◽  
Chemical Nature ◽  
Pore Solution ◽  
Uranium Content ◽  
Iron Hydroxides ◽  
Water Capacity ◽  
Cadmium Lead ◽  
Definite Temperature

Effect of the soil temperature on concentration and total reserve of cadmium, lead and uranium in the interstitial (pore) water of (0–20)-cm samples of sod-podzolic soil with moisture content of 60 % of the water capacity (WC) after their keeping at the definite temperature (in the range of 14–40 °С) was established. It was found that character and extent to which temperature effects on concentration and total reserve of every heavy metal (Cd, Pb, U) in the soil pore solution depended on the chemical nature of heavy metal and peculiarities of soil. In the temperature range of 14–40 °С and moisture content in the soil samples 60 % of the WC, portions of the cadmium, lead and uranium in the soil pore solution decreased in the following way: aCd (0.2–0.4 %) > aPb (0.06–0.07 %) > aU (0.03–0.04 %). The concentrations and total reserves of cadmium, lead and uranium in the soil pore solution increased with lowering the temperature and it was especially true in regard to cadmium. The 5 °С temperature decrease in the range of 14–40 °С caused the content of cadmium in the soil pore solution to increase an average of 25 %, lead – 5.2 and U – 4.6 %. The iron content in the soil solution also increased with decreasing temperature, which indicated a decrease in the sorption capacity of iron hydroxides present in the soil, which probably played a prominent role in fixing cadmium, lead and uranium in the soil studied.

Gram-scale synthesis of monodisperse sulfonated polystyrene nanospheres for rapid and efficient sequestration of heavy metal ions

2017 ◽  
Vol 53 (95) ◽  
pp. 12766-12769 ◽  
Author(s):  
Bin Gong ◽  
Yaotian Peng ◽  
Ziyan Pan ◽  
Weiming Chen ◽  
Yi Shen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Large Scale ◽  
Zinc Ions ◽  
Sulfonated Polystyrene ◽  
Copper And Zinc ◽  
Polystyrene Nanospheres

Large-scale monodisperse sulfonated polystyrene nanospheres are synthesized for the removal of lead, copper and zinc ions from aqueous solutions.

scholarly journals Copper and zinc generated by the Aquascape IonGen pond clarifier system can be detrimental to koi (Cyprinus carpio) health

2020 ◽  
Vol 7 (1) ◽  
pp. e000396
Author(s):  
Emily Tucker ◽  
Jamie Gerlach ◽  
Azais Curtean ◽  
Kent Passingham ◽  
Lisa Murphy ◽  
...  
Keyword(s):  
Heavy Metal ◽  
North Carolina ◽  
Cyprinus Carpio ◽  
Metal Toxicity ◽  
Copper Ion ◽  
Heavy Metal Toxicity ◽  
Soft Water ◽  
Morbidity And Mortality ◽  
Copper And Zinc ◽  
Postmortem Examinations

BackgroundCopper is frequently used as an algicide, and copper ion generators such as the Aquascape IonGen claim to be safe for use in systems containing fish. In 2012, a die-off of koi (Cyprinus carpio) in a pond in Raleigh, North Carolina, occurred after the IonGen was added to the system.MethodsPhysical and postmortem examinations suggested that heavy metal toxicity was the likely cause of morbidity and mortality. This was supported by a heavy metal screening of the owners’ pond. Additional experiments were performed to determine if the IonGen produced toxic levels of copper and zinc.ResultsThe tank containing the IonGen had higher concentrations of copper and zinc, and copper levels exceeded those associated with toxicity in both hard and soft water.ConclusionThe results of this study indicate that ion generators might not be safe for fish, and copper should only be used as an algicide if concentrations are closely monitored.

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