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.

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 Numerical Evaluation and Management Suggestions for Heavy Metal Pollution Risks in a Sludge Landfill: A Case Study from Fuyong Landfill, Shenzhen, China

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Muyun Sun ◽  
Kaiyuan He ◽  
Shi Shu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Pore Water ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Rainfall Infiltration ◽  
Metal Concentrations ◽  
Metal Pollutants ◽  
Heavy Metal Concentrations ◽  
Heavy Metal Pollutants

Despite the extensive attention paid to the transport of heavy metals in sludge landfills, the processes of transporting these pollutants from a landfill to the underground environment are quite complicated and subject to significant uncertainty. In this study, the transport of typical heavy metal pollutants in a sludge landfill through saturated and unsaturated soil zones during rainfall was investigated via numerical modeling. The objectives of the study are to evaluate the heavy metal pollution risk from a sludge landfill under rainfall infiltration conditions and to propose several management suggestions. The results indicate that, during rainfall, heavy metal concentrations at the top of the unsaturated sludge layer decrease rapidly, but they decrease more gradually at the bottom of the layer. The maximum concentration appears in vertical distribution and decreases gradually through the saturated zone. Nickel is the first heavy metal pollutant to break through the low-permeability natural silt barrier. The transport parameters not only influence the simulated time for heavy metal pollutants to break through the silt layer and cause underground environmental pollution but also affect the extent to which the heavy metal pollutants in pore water exceed the guidelines. On the basis of these results, for dredged sludge with heavy metal concentrations significantly exceeding the standard, the concentration of heavy metals in pore water should be reduced before the sludge is landfilled, and a covering layer should be established on the sludge surface to control rainfall infiltration.

scholarly journals Catalase Activity in Brown Mussels (Perna perna) under Acute Cadmium, Lead, and Copper Exposure and Depuration Tests

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Kamel Boudjema ◽  
Sidali Kourdali ◽  
Nabila Bounakous ◽  
Abdellah Meknachi ◽  
Abdelmalek Badis
Keyword(s):  
Heavy Metal ◽  
Catalase Activity ◽  
Rank Correlation ◽  
General Tendency ◽  
Copper Exposure ◽  
Perna Perna ◽  
Spearman Rank Correlation ◽  
Spearman Rank ◽  
Cadmium Lead ◽  
Spearman Rank Correlation Coefficient

Brown mussels (Perna perna) were exposed to cadmium (Cd), lead (Pb), and copper (Cu) concentrations under acute exposure and exposure-depuration tests for the estimation of biochemical biomarker catalase (CAT). The acute tests showed accumulated Cd, Pb, and Cu inPerna pernacorrelated linearly with the exposure concentrations (R2=0.794,R2=0.891, andR2=0.985for Cd, Pb, and Cu, resp.). The results of CAT increased significantly in tissues of treatment mussels after 72 h exposure when compared to control. The values of total protein were disturbed in exposed groups when compared with control. These results suggest that metabolites and catalase activity were affected by heavy metal exposures. Analysis using the Spearman rank correlation coefficient showed that the CAT activity appeared to have a significant positive correlativity (Rs=0.921,Rs=0.949, andRs=0.949for Cd, Pb, and Cu, resp.) with the accumulated Cd, Pb, and Cu concentrations, respectively. The result of exposure-depuration tests showed that there is a general tendency for CAT to decrease in depuration phase, suggesting that the induction of catalase is metal and/or mixture of metals dependent.

A Comparative Study of Heavy Metal Accumulation in Tissues of the Crested Tern, Sterna bergii, Breeding Near Industrialized and Non-Industrialized Areas

1981 ◽  
Vol 8 (3) ◽  
pp. 665 ◽  
Author(s):  
DM Howarth ◽  
AJ Hulbert ◽  
D Horning
Keyword(s):  
Heavy Metal ◽  
Metal Accumulation ◽  
Heavy Metal Contamination ◽  
Heavy Metal Accumulation ◽  
Cadmium Content ◽  
Salt Glands ◽  
Manganese Zinc ◽  
Copper Manganese ◽  
Cadmium Lead ◽  
The Individual

Tissues taken from crested terns were analysed for cadmium, lead, copper, chromium, manganese, zinc and iron. The birds were taken from a breeding colony in a non-industrialized region (North Solitary I., NNE. of Coffs Harbour, N.S.W.) and from one near an industrialized region (Big I., Port Kembla, N.S.W.). The birds from the industrialized region did not show any consistent evidence of significant heavy metal contamination when compared to those of the non-industrialized region. The individual tissues were also compared to assess the distribution of the various metals, and the relative degree to which each tissue accumulates the metals. Some accumulation of chromium, copper, manganese, lead and, to a lesser degree, cadmium and zinc was found in the salt glands. The kidneys had a relatively large cadmium content.

The Study of Heavy Metal Pollution Characteristics in Soil of Typical Urban-Industrial Wasteland

2012 ◽  
Vol 260-261 ◽  
pp. 1189-1194
Author(s):  
Su Chen ◽  
Lei Chao ◽  
Li Na Sun ◽  
Tie Heng Sun
Keyword(s):  
Heavy Metal ◽  
Pollution Index ◽  
Quality Standard ◽  
Liaoning Province ◽  
Land Utilization ◽  
Metal Quality ◽  
Pollution Levels ◽  
Environment Quality ◽  
Object Based ◽  
Cadmium Lead

This study chooses the industrial wasteland after the relocation of a metal processing factory in Shenyang, Liaoning Province of China as the research object. Based on level three soil heavy metal quality standards of Soil Environment Quality Standard (GB15618-1995) in China, the pollution levels of four heavy metals (cadmium, lead, copper and zinc) in survey area are Cd> Cu> Zn> Pb; the Cd pollution is the most serious one, followed by Cu and Zn. The Pb content is low. Average comprehensive pollution index of Cd, Cu, Zn and Pb in soil of the wasteland is 17.33, which belong to Grade V severe pollution. The most polluted point is J-12, followed by J-11 and J-16. The land utilization risk assessment of the wasteland should be strengthened, and appropriate and necessary repair measures should be taken, such as planting accumulative or tolerant plants.

scholarly journals Mineral element and heavy metal (cadmium, lead and arsenic) levels of bee pollen in Turkey

2017 ◽  
Vol 37 (suppl 1) ◽  
pp. 136-141 ◽  
Author(s):  
Sema Sandikci ALTUNATMAZ ◽  
Duygu TARHAN ◽  
Filiz AKSU ◽  
Umıt Bora BARUTÇU ◽  
Mehmet Erman OR
Keyword(s):  
Heavy Metal ◽  
Mineral Element ◽  
Bee Pollen ◽  
Cadmium Lead
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