scholarly journals The influence of ecological and geographical conditions on the concentration of heavy metals in the spleen of Hereford cattle bred in the conditions of the Novosibirsk and Altai regions

Author(s):  
K. N. Narozhnikh

Contamination of the food chain with heavy metals has become an urgent problem in recent years due to their potential accumulation in biosystems and is related to increased anthropogenic impact. This study assessed the levels of cadmium, lead, copper and zinc in cattle from the Novosibirsk, Krasnozersk, and Maslyanino regions of the Novosibirsk region and the Tselinny region of the Altai region. The aim of the study is to assess the influence of the ecological and geographical factors on the content of heavy metals in the spleen of Hereford gobies. Spleen samples were taken from 31 clinically healthy Hereford bulls aged 16-18 months. Sample preparation was carried out in accordance with GOST 26929-94 and 30178- 96. The determination of the chemical composition of the samples was carried out by atomic absorption spectrometry with flame and electrothermal atomization. The median values for the content of copper, zinc, lead and cadmium in the spleen of bull calves bred in Krasnozersky, Maslyaninsky, Novosibirsk and Tselinny regions were in the range of 1.6-1.8; 21.0-22.4; 0.06-1.45; 0.01-0.09 mg / kg. The phenotypic variability of the level of copper and zinc was relatively low, while that of lead and cadmium was high. The influence of the ecological and geographical factor was characteristic only for the level of cadmium. Significant differences in the concentration of cadmium in the spleen in animals raised in the Maslyanino region from those bred in the Krasnozersk and Novosibirsk regions were revealed. For copper, zinc and lead reference intervals were calculated - 0.60-2.92; 17.2-26.0; 0.019-0.218 mg / kg, respectively. They can serve as a rough guideline for Hereford cattle bred in the Krasnozersk, Novosibirsk, Maslyanino districts of the Novosibirsk region and the Tselinny district of the Altai region.

2021 ◽  
Vol 51 (5) ◽  
pp. 83-90
Author(s):  
K. N. Narozhnykh

The problem of food contamination by heavy metals due to their accumulation in biosystems as a result of anthropogenic influences has been studied. The results of cadmium, lead, iron and manganese in cattle from the Novosibirsk Region and the Altai Territory are presented. The purpose of the study was to assess the impact of the ecological and geographical factor on the heavy metal content in the lungs of Hereford bulls. Lung samples were taken from 31 clinically healthy Hereford bulls aged 16-18 months. Sample preparation was carried out in accordance with GOST 26929-94 and 30178-96. The chemical composition of the samples was determined by atomic absorption spectrometry with flame and electrothermal atomization. The median values of the content of cadmium, lead, iron and manganese in the lungs of bull-calf were in the range of 0,01-0,12; 0,07-0,11; 70,9-89,1 and 0,3-0,4 mg/kg. The phenotypic variability of the level of iron and manganese was relatively low, while that of lead and cadmium was high. The dispersions of lead and cadmium levels in the animal groups studied were homogeneous, manganese and iron variants were heterogeneous. The influence of the ecological and geographical factor is characteristic only for cadmium levels. For manganese, iron, lead and cadmium the calculated reference ranges are: 0-1.12; 0-148.1 and 0-0.170 mg/kg respectively. They can serve as a guideline for Hereford cattle bred in the territories of Krasnozersky, Novosibirsky and Maslyaninsky districts of the Novosibirsk region and the Tselinny district of the Altai Territory.


2013 ◽  
Vol 78 (7) ◽  
pp. 933-945 ◽  
Author(s):  
Mirjana Bonic ◽  
Vele Tesevic ◽  
Ninoslav Nikicevic ◽  
Jelena Cvejic ◽  
Slobodan Milosavljevic ◽  
...  

Seven elements, namely, arsenic, lead, cadmium, copper, zinc, iron and manganese were determined in 31 samples of Serbian plum brandies by applying atomic spectrometry techniques. Flame atomic absorption spectrometry was used for quantification of copper, iron, zinc, manganese, lead and cadmium; and hydride generation atomic spectrometry absorption for arsenic quantification. Measured concentrations of heavy metals and arsenic was assessed according to the Serbian regulations, official regulations of some other countries and in respect of microelements content in other similar distilled alcoholic beverages. Amounts of microelements in maximal recommended daily and weekly intake of plum brandy were determined. The influence of production (home made and industrial), type of wooden barrel (oak and mulberry), and duration of ageing process on the content of Zn, Cu, Fe and Mn in plum brandies, as well as coefficient of correlation between Cu content and pH value were also studied.


Author(s):  
A. Ilinskiy

Under the conditions of a lysimetric experiment on podzolic chernozem, it was found that the use of dolomite flour contributed to a decrease in the mobility of metals and their translocation into crop products, which was reflected in a decrease in their removal relative to the background. The use of mineral fertilizers by increasing the yield of phytomass contributed to an increase in the removal of copper, zinc, lead and cadmium from the soil. The largest total removal of copper, zinc, lead and cadmium with the phytomass of annual grasses (8,035 mg/m2) is observed when using a mineral fertilizer system, and the smallest removal of the indicated metals is observed when using lime without manure (5,092 mg/m2).


2020 ◽  
Vol 24 (9) ◽  
pp. 1655-1662
Author(s):  
K. Obukohwo ◽  
P.A. Vantsawa ◽  
D.M. Dibal ◽  
U.J.J. Ijah ◽  
G.B. Onwumere ◽  
...  

The operation of Kaduna Refinery and Petrochemical Company (KRPC) has increased effluent generation with consequent effects on water quality and habitat since it is discharged into nearby receiving water body. These effluents contain heavy metals and other toxicants. Samples were  collected from the effluent discharge point of the Kaduna Refinery and Petrochemical Company (KRPC) and from Romi River located at Kaduna South Local Government Area of Kaduna state. Standard methods were used to analyze the physicochemical parameters and heavy metals of the effluents. A total of 14 fungi isolates were identified from the samples. These fungi isolates were screened for their bioremediation potential on some toxic components in refinery effluent and were identified using molecular techniques. Four fungi isolates (Chrysosporium tropicum, Aspergillus flavus, Aspergillus niger and Rhizopus oryzae) were selected for bioremediation. Carbon (IV) oxide evolution increased progressively during the period of bioremediation. There was a noticeable decline in the phenol, lead, cadmium and nickel in the entire bioremediation medium. There was a positive correlation between phenol and cadmium with a coefficient of 0.969. Consortia of fungi isolated from the refinery effluent and Romi River samples were effective in the bioremediation of refinery effluent. The mixed consortium of four fungi showed the most efficacies in the bioremediation of refinery effluent in terms of phenol, oil and grease, cadmium, lead and cadmium reduction. Kaduna Refinery and Petrochemical Corporation (KRPC) should adopt bioremediation as one of the techniques in treating effluents before being discharged into receiving water bodies Keywords: Effluents, Fungi, heavy metal, bioremediation.


2020 ◽  
Vol 6 (2(71)) ◽  
pp. 9-12
Author(s):  
Andrey Ilinskiy

The results of a field lysimetric experiment on podzolized сhernozem to study the coefficients of biological absorption of heavy metals and trace elements for root crops and tops of fodder beets using various systems of mineral fertilizers are presented. Analysis of the empirical series of accumulation of elements in the main and byproducts of fodder beet plants showed that the level of accumulation of zinc, lead and cadmium in root crops is significantly lower than in the tops, and the copper content is relatively evenly distributed between the main and by-products according to the variants of the experiment. In the variant with an increased agrochemical background, there was a decrease in the content of copper, zinc and lead in the main and by-products of feed beets, which may be due to the effect of biological dilution when using mineral fertilizers.


2021 ◽  
Author(s):  
S.S. Gnusarev ◽  
N.A. Mitrofanova ◽  
B.P. Churakov

A study was conducted on the effect of mixed rot from the present tinder on the accumulation of heavy metals (copper, zinc, nickel, cadmium, lead, cobalt, iron) by hanging birch Keywords: real tinder, mixed rot, heavy metals, hanging birch.


Author(s):  
V. O. Kurchenko ◽  
T. S. Sharamok ◽  
O. M. Marenkov

In this article the histological structure of gills and kidneys of the Prussian carp is considered and researched. The research was conducted in the waters of the Zaporizhian (Dnipro) reservoir, namely in the Samara Bay and the lower part of the reservoir (near the village of Viiskove) during 2017–2019. Previous studies have revealed the excess of maximum permissible concentrations of heavy metals in the water of the Samara Bay compared to the lower part of the Zaporozhian reservoir. High levels of nickel and cadmium were observed in the Samara Bay. Statistically significant differences were found between the content of copper, zinc, nickel, lead and cadmium in the two areas of the reservoir (p


2014 ◽  
Vol 884-885 ◽  
pp. 611-614
Author(s):  
Ying Zhang ◽  
Shao Juan Jiang ◽  
Ge Yang

The aim of the present study was to analyze and compare contents of copper, zinc and chromium in 15 kinds of wild mushrooms. heavy metals were determined using flame atomic adsorption spectrometry (VARIAN, SpectrAA-220Fs). The mushrooms were collected from Miyi, China. The study explored the accumulation of heavy metals in different macrofung. Minimal and maximal concentrations of heavy metals were determined in Termitomyces microcarpus and Amanita esculenta for copper, Ramaria flava and Termitomyces for zinc, Hygrophorus eburnesus and Boletus aereus for chromium ,respectively. chromium values in wild mushrooms collected from Miyi were generally higher than the previous studies. Copper and zinc contents were in agreement with the literature value.


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