scholarly journals Results of the study on measurements of heavy metals concentrations in organs and tissues of livestock grazing on pastures around mining industry in gobi zone

2019 ◽  
Vol 26 (01) ◽  
pp. 10-16
Author(s):  
Bayatogtokh B ◽  
Delgermoron D ◽  
Tsend-Ayush S ◽  
Lkhamjav G ◽  
Tserenchimed S ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Mining Industry ◽  
Uranium Mining ◽  
Soil Samples ◽  
Livestock Grazing ◽  
The Other ◽  
Blood Samples ◽  
Mining Areas ◽  
Other Hand ◽  
Addition Level

Level of the heavy metals was measured in tissue and blood samples from 19 cattle, 20 horse, 38 camel, 89 sheep and 102 goats in several mining areas such as Ulaanbadrakh soum (uranium mining) and Airag soum (spar mining) of Dornogovi province. In addition, level of the lead in the liver of sheep and goat samples from Zuunbayan soum of Dornogovi province was bit higher than same samples from other sampling areas. In the result, level of the copper was 814 ppm in the liver samples of sheep, 734 ppm in the liver samples of goat and they were and 2.5-4.0 fold higher than international permissible value. On the other hand, level of the cadmium was 352,789±122,64 mg/kg in kidney samples of horse, indicating that amount of these heavy metals were enough high to have toxicities in animals. Except for these results, level of heavy metals was not higher than international permissible value in plant and soil samples. Говийн бүсийн уул уурхайн хайгуул олборлолтын бүс орчимд бэлчээрлэж буй малын эд, эрхтэн дэх хүнд металлын агууламжийг тодорхойлсон судалгааны дүнгээс Хураангуй: Дорноговь аймгийн Улаанбадрах, Зүүнбаян сумын нутаг дэвсгэрт ураны хайгуул, туршилтын олборлолт явуулж буй бүс нутаг, Айраг сумын жоншны уурхайн олборлолтын бүс нутаг орчим бэлчээрлэж буй 89 хонь, 102 ямаа, 19 үхэр, 38 тэмээ, 20 адууны эд эрхтэн болон цусанд хүнд металлын (хар тугалга, зэс, кадми) агууламжийг тодорхойлов. Хар тугалга нь тархи болон бөөрийг маш хүндээр гэмтээдэг, ясыг зөөлрүүлдэг, төдийгүй хордолт нь үхэлд хүргэх аюултай бодис билээ. Маш удаан хугацаагаар энэ бодист өртөгдсөн хүүхэд төдийгүй томчуудын мэдрэлийн системийг гэмтээдэг, бага багаар хуримтлагдсаар хордлого үүсгэх, хүний мэдрэлийн эрхтэнд муугаар нөлөөлөх талтай. Хар тугалга нь хүний биед нөлөөлөх байдлаараа хортой бодисын ангилалд ордоггүй. Хөнөөлт бодист тооцогдоно. Иймд мал амьтны эд эрхтэнд агуулагдаж буй хар тугалга болон зэсийн агууламжийг дахин нарийнсудлах шаардлагатай байна. Түлхүүр үг: Хар тугалга, зэс, Индукцэн холбоост плазм масс спектрометр.

scholarly journals Innovative Ultrasound-Assisted Approaches towards Reduction of Heavy Metals and Iodine in Macroalgal Biomass

Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 649
Author(s):  
Estefanía Noriega-Fernández ◽  
Izumi Sone ◽  
Leire Astráin-Redín ◽  
Leena Prabhu ◽  
Morten Sivertsvik ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Dry Weight ◽  
The Other ◽  
Laminaria Hyperborea ◽  
Other Hand ◽  
Macroalgal Biomass ◽  
Ultrasound Assisted ◽  
I 31

The aim of this work was to evaluate the potential of ultrasound (US), alone or in combination with mild heating and/or EDTA towards reduction of As, Cd, I, and Hg content of Laminaria hyperborea. Concentrations of As, Cd, I, and Hg of 56.29, 0.596, 7340, and <0.01 mg kg−1 of dry weight, respectively, were found in L. hyperborea blades. Treatment with US at 50 °C increased approx. 2-fold the amount of As released, although did not affect significantly the content of Cd or I, as compared to control (no US) samples. Reducing the temperature to 8 °C significantly decreased the effect of US, but heating at 80 °C did not cause a significant effect as compared to treatments at 50 °C. On the other hand, treatment with 0.1 N EDTA at 50 °C enhanced the percentage of Cd released by approximately 7-fold, regardless of sonication. In the present work, the combination of US and EDTA at 50 °C for 5 min led to a significant reduction of the As (32%), Cd (52%) and I (31%) content in L. hyperborea, thus improving the product’s safety for consumers.

scholarly journals Occurrence of Salmonella spp. and Listeria spp. in snail meat

2018 ◽  
Vol 74 (2) ◽  
pp. 6074-2018
Author(s):  
WALDEMAR PASZKIEWICZ ◽  
KRZYSZTOF SZKUCIK ◽  
MONIKA ZIOMEK ◽  
MICHAŁ GONDEK ◽  
RENATA PYZ-ŁUKASIK
Keyword(s):  
Listeria Monocytogenes ◽  
Natural Habitat ◽  
Soil Samples ◽  
The Other ◽  
Lower Percentage ◽  
Salmonella Spp ◽  
Raw Meat ◽  
Other Hand ◽  
Cornu Aspersum ◽  
Meat Samples

The objective of the research was to determine the occurrence of microorganisms of the Salmonella spp. and Listeria spp. in raw and frozen (cooked) snail meat obtained from both free-living and farmed edible snails. The research material comprised meat samples collected from three snail species (25g from each), that is, Roman snail (Helix pomatia – HP), small brown garden snail (Cornu aspersum aspersum – CAA) and large brown garden snail (Cornu aspersum maxima – CAM). Roman snails came from their natural environment and were harvested in Wielkopolska Voivodeship and Lower Silesia Voivodeship (regions A and B, respectively). The Cornu genus snails were obtained from two heliciculture farms located in the abovementioned voivodeships (farms A and B, respectively). On both farms, the snails were maintained under the mixed rearing system. The raw meat samples taken from the edible portion of snails, that is, the foot with collar and a fragment of the mantle, were obtained after the snails were sacrificed in the laboratory. The frozen meat samples, on the other hand, came from a snail meat processing facility. A total of 300 samples were examined for the presence of Salmonella spp., and 240 for the presence of Listeria spp. The research also included pooled soil samples of 0.5 kg each collected from polytunnels (in the pre-fattening stage) and outdoor farming plots (in the fattening stage). The tests for the Salmonella presence were performed in accordance with Polish standard PN-EN ISO 6579:2003, and the test for Listeria complied with PN-EN ISO 11290-1:1999. Listeria monocytogenes was identified by the PCR technique. Salmonella spp. were not detected in any of the 300 samples of raw and cooked snail meat under study. Nor were these pathogens isolated from the soil samples. The absence of these bacteria in the raw meat samples indicates that Salmonella spp. did not occur in either the natural habitat of Roman snails or the two farms producing Cornu genus snails. On the other hand, bacteria of Listeria spp. were detected in 101 (42.1%) snail meat samples. A particularly high load of microbiota was found in raw meat, as these bacteria contaminated from 60% (for HP from region A and CAM from farm B) up to 75% (for CAA from farm A) of samples. Notably, a markedly lower percentage (35%) of samples containing Listeria spp. was found only among the Roman snail raw meat samples from the region B. Listeria spp. were also detected in all the soil samples. Thermal treatment of meat achieved a substantial reduction in the load of Listeria spp., but did not eliminate it. The frequency of this genus in frozen meat samples was from 63.5% (for CAM from farm A) to 15.4% (for CAA from farm B) of that in raw meat. The PCR technique was used identify 15 selected strains, including 11 from raw meat samples and 4 from cooked meat. A total of 5 isolates were recognized as Listeria monocytogenes (2.1% of all samples examined and 4.95% of samples with Listeria spp.). All of them originated from the raw meat of farmed snails, including one (CAA) from the farm A and four (3 CAA and 1 CAM) from the farm B. Bacteria of the Salmonella and Listeria genera occur in the natural habitat of edible snails, which poses a potential hazard to human health. Effective implementation of control programmes at the primary production stage is the first step that could considerably limit the presence of these pathogens in farmed snails and, consequently, in snail meat. .

scholarly journals The significance of soil microorganisms as a limiting factor in infection of clover by Sclerotinia trifoliorum erikss. at different times of the year

1964 ◽  
Vol 36 (1) ◽  
pp. 120-134
Author(s):  
Anna-Marja Halkilahti
Keyword(s):  
Soil Microorganisms ◽  
Soil Microbes ◽  
Marked Decrease ◽  
Petri Dish ◽  
Soil Samples ◽  
Pronounced Effect ◽  
The Other ◽  
Limiting Factor ◽  
Sclerotinia Trifoliorum ◽  
Other Hand

In the petri dish trials the mycelia of Sclerotinia trifoliorum in sterilized soil samples generally infected clover quite readily. In unsterilized samples the infection was less severe and showed marked variations in different years and at different times of the year. In the outdoor trials clover became less infected in the middle of the summer than in the spring and autumn. On the other hand, in the thermostat trials, where the temperature was constantly 7—10°C, the temperature at the time of taking the soil samples did not have a pronounced effect on the extent of clover infection. Liming of the soil caused a marked decrease in the severity of clover rot infection. In some autumns clover plants growing in soil samples taken from fallow were more seriously infected than those growing in soil from a clover field. As a rule, however, there were only slight variations in the extent of infection in the soil samples taken at the same time from the various areas of the field cultivated in different ways. In general, the highest numbers of microorganisms in the soil were found in the autumn and the lowest in the spring. In clover fields there were often more microorganisms – particularly in the autumn – than in fallow. Liming caused an increase in the numbers of soil microbes. S. trifoliorum infected clover very severely at temperatures of 0—5°C; in the range 5—21°C the infection grew generally milder the more the temperature was found to be rising. At temperatures of 5– 10°C an increase in the numbers of soil microbes resulted in a decrease in the infection of the clover. Still higher temperatures, which did not increase the numbers of soil microorganisms, nevertheless enhanced the antagonistic power of the soil.

Interpretation of 25-OH-D3, NEFA, and calcium correlations among cow and calf pairs

2025 ◽  
Vol 77 (04) ◽  
pp. 6511-2025
Author(s):  
SONGUL ERDOGAN ◽  
KEREM URAL ◽  
HASAN ERDOGAN ◽  
DENIZ ALIC URAL ◽  
MEHMET GULTEKIN ◽  
...  
Keyword(s):  
Energy Balance ◽  
Vitamin D3 ◽  
Colorimetric Method ◽  
Negative Energy ◽  
The Other ◽  
Negative Energy Balance ◽  
Test Results ◽  
Blood Samples ◽  
Other Hand ◽  
Cow Calf

In the present study, the aim was to determine alteration of NEFA, calcium and vitamin D3 levels in cow and calf pairs at parturition as well as correlation between each parameter levels. For this purpose, a cow-side device employing the enzymatic colorimetric method was used for measurement of NEFA and calcium levels. On the other hand, serum 25(OH)D3 analysis was performed using the fluorescence immunochromatographic method at the laboratory in the Faculty. Blood samples were taken from Vena jugularis of 15 Simmental cow and calf pairs immediately after parturition and placed in serum and heparinized tubes. In cow and calf pairs, concentration of vitamin D3 (15.6-120 and 31.8-120 ng/mL, respectively), NEFA (0.12-1.2 and 0.09-0.8 mmol/L, respectively) and calcium (1.8 ± 0.9 and 2.2 ± 0.6 mmol/L, respectively) were determined. There was no significant correlation between NEFA, Ca, and vitamin D3 in cows and calf pairs. Taking into account several co-factors that influenced test results, which could not easily be excluded, further studies may be warranted with larger cow-calf pair populations. In conclusion, vitamin D3 concentration in calves is not affected by the negative energy balance of dams in the parturition period.

X-IRRADIATION OF RIBOSE AND DEOXYRIBOSE DERIVATIVES

1962 ◽  
Vol 40 (1) ◽  
pp. 1553-1565
Author(s):  
D. K. Myers
Keyword(s):  
Aqueous Solution ◽  
Nucleic Acids ◽  
The Other ◽  
Free Sugar ◽  
Blood Samples ◽  
Other Hand ◽  
Dilute Aqueous Solution ◽  
X Irradiation ◽  
In Cells

During X-irradiation of ribosides and deoxyribosides in dilute aqueous solution, purine and sugar moieties were destroyed at approximately the same rate. Pyrimidine moieties, on the other hand, were destroyed more rapidly, resulting in a fairly rapid liberation of free sugar during irradiation of pyrimidine ribosides or deoxyribosides. No marked differences in the rates of destruction of ribose and deoxyribose derivatives were observed in these experiments.Similar reactions were observed during irradiation of blood samples. However, acid-soluble ribonucleotides in the blood proved to be much more sensitive than the nucleic acids or proteins to destruction by X-radiation. The significance of these findings is discussed with relation to the damage produced in cells by X-irradiation.

Distribution of metallic trace elements (ETM) in surface soils around the Mediouna discharge (southern of Casablanca)

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Trace Elements ◽  
Organic Matter ◽  
Spatial Distribution ◽  
Soil Samples ◽  
The Other ◽  
Surface Soils ◽  
Other Hand ◽  
Metallic Trace Elements ◽  
Low Concentrations ◽  
Uncontrolled Landfill

The objective of present research was to characterize the surface soils located at 300, 600 and 1000 m of an uncontrolled landfill. The work also aims to evaluate the levels and spatial distribution of metallic trace elements (Cd, Pb, Cu, Ni, Zn, Cr, Co and As) in these soils. Soil samples were collected in 36 points around the landfill. Results showed that Cd, Pb, Zn are concentrated in the soils rich in clay and carbonates, and in organic matter, located at 300 m from the landfill. The basic pH of all soils enhances the retention of these metals. On the other hand, As present in soils at 300, 600 and 1000 m at concentrations slightly higher than those of referenced soils were apparently mobilized by water from the solid/water interfaces. The other metals Cu, Ni, Co, Cr are present at very low concentrations.

scholarly journals Arsenic and Heavy Metal Accumulation and Risk Assessment in Soils around Mining Areas: The Urad Houqi Area in Arid Northwest China as an Example

2018 ◽  
Vol 15 (11) ◽  
pp. 2410 ◽  
Author(s):  
Shuai Song ◽  
Yuanjie Li ◽  
Lin Li ◽  
Maoyong Liu ◽  
Jing Li ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Mining Industry ◽  
Northwest China ◽  
Mining Area ◽  
Heavy Metal Accumulation ◽  
Contaminated Site ◽  
Mineral Concentration ◽  
Distribution Maps ◽  
Mining Areas ◽  
Soil Ecosystems

Mining activities make important contributions to economic growth, but they can also produce massive amounts of solid waste, such as tailings and metal accumulations. Taking the Urad Houqi mining area in Inner Mongolia as the study area, this study systematically assessed the contamination risk of arsenic and heavy metals in the soils of the study area and explored the contamination characteristics in a key polymetallic mining area. For the whole study area, based on the Nemerow comprehensive pollution method, almost half of the investigated sites were contaminated, and the most contaminated site was Urad Houqi Qianzhen Mineral Concentration Co., Ltd. (Bayannaoer, China), a cooperation between the lead and zinc mining industry. The assessment results indicated that Cd and As were the elements of greatest concern, followed by Pb, Cr and Hg. Particularly, for the typical Dongshengmiao mining area, when compared with the GB15618-1995 standard values, As, Zn and Cd posed the most serious contamination threat, while Cr and Ni exhibited clean conditions. In addition, the vertical distribution maps demonstrated that the contents of arsenic and metals in some soil profiles were correlated with sampling depth. Therefore, arsenic and heavy metals pose high threat to soil ecosystems in this area, there is encouragement for some control and remediation measures to be taken into effect.

scholarly journals Study of Heavy Metals Toxicity Level in Workplace Atmosphere by Alternative Methods

2021 ◽  
Vol 906 (1) ◽  
pp. 012034
Author(s):  
Lorand Toth ◽  
Călămar Angela ◽  
Simion Alexandru ◽  
Cristian Nicolescu ◽  
Izabella Kovacs
Keyword(s):  
Heavy Metals ◽  
Working Conditions ◽  
Well Being ◽  
The Body ◽  
The Other ◽  
Alternative Methods ◽  
Positive Contribution ◽  
Other Hand ◽  
Relative Standard ◽  
Toxicological Investigation

Abstract Promoting safety and health at work, as part of the overall improvement of working conditions, is an important strategy, not only to ensure well-being of workers, but also to make a positive contribution to productivity. Health, safety and well-being of workers are therefore prerequisites for improving quality and productivity and are important for equitable and sustainable socio-economic development. Toxicological investigation of an industrial objective involves both knowledge of working conditions and the dynamic establishment of occupational pollutants in the workplace atmosphere, as well as bio-toxicological evaluation, being a synthetic representation of the aggressiveness of pollutants entering the body by various paths (respiratory, cutaneous, digestive, etc.) with reference, at the same time, to the adaptability of respective employees. Evaluation of the toxicological investigation has a role in following the evolution of working conditions and health of employees in time, potential technological changes with possible impact on employees’ health, as well as if new conditions occur, requiring the completion of previous toxicological investigations. Use of heavy metals in different industries has increased the quality of products from different production sectors but on the other hand also led to an increase in the toxicity of workplace atmosphere, which requires an assessment of the negative impact produced. The current paper aims at an alternative analysis of the determination of heavy metals content (Cu, Cd, Pb, Ni, Cr) in workplace atmosphere, using, on one hand, the method of spectroscopy of atomic emissions with inductively coupled plasma and, on the other hand, fluorescence with X rays. Following statistical processing of data gathered by the two alternative methods, the accuracy, reproducibility, relative standard deviation as well as the fidelity of methods expressed by the coefficient of variation will be established.

scholarly journals MYCOREMEDIATION OF HEAVY METALS PRESENT IN CONTAMINATED AGRICULTURAL SOIL

2020 ◽  
Vol 21 (supplement 1) ◽  
Author(s):  
Manisha Shalini Besra ◽  
Prashant Kumar Mishra
Keyword(s):  
Heavy Metals ◽  
Soil Sample ◽  
Agricultural Soil ◽  
Sampling Site ◽  
Control Sample ◽  
Soil Samples ◽  
The Other ◽  
Mushroom Cultivation ◽  
Initial Screening ◽  
Barren Land

In this study, Mycoremediation technique was used to analyse the potential of mushroom in absorbing heavy metals from contaminated soil. A small village Sitagarha located in Hazaribag, Jharkhand was selected as sampling site. Soil sample was collected from two different sites – from field where cow manure was used as fertilizer and the other soil sample where chemical fertilizer was mixed. A control sample was also collected from nearby barren land where no cultivation was carried out since decades. After initial screening, three heavy metals Cu, Cd and Zn were selected to carry out further studies. The soil sample was processed in laboratory and analysed in AAS to detect the concentration of heavy metals. Results showed the presence of heavy metals as – Cd > Cu > Zn. Further these soil samples were mixed along with straw and spawn to prepare a mushroom cultivation bag as mushroom has the property to absorb heavy metals. The result of absorbance of heavy metals by mushroom was somewhere an indication that mycoremediation proofs to be an important tool to fight against heavy metals.

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