DETERMINATION OF THE IMPACT OF HEAVY METALS ON EMBRYOGENESIS IN RATS

Biotesting to assess the complex relationships between soil, contaminants and living organisms and to determine the impact on ecosystems of pollutants whose concentrations may be beyond the sensitivity of the methods of determination and the composition of which cannot be determined. The aim is to establish the level of phytoxicity of wastes of mechanical processing of polymer mixtures, which are extracted from solid household waste with the help of indicator plants. Methods. Evaluation of phytotoxic effects was performed by vegetation methods according to ISO: 17402-2008, 17126-2005a, 11269-1: 2012a, 11269-2: 2012b. Contamination levels of the test samples were assessed according to ISO 16198.Objects of research: watercress seeds, mustard, wheat, corn, soybeans, barley and sludge from the processing of polymer mixtures composed of polymer particles of different composition and quantity, along with the remnants of paper labels. Studies of the content of heavy metals (Pb, Cu, Cd, Zn, Ni) were performed by atomic absorption method on a spectrophotometer type CAS-120.1 in accordance with generally accepted methods. Results. The studied sludge does not negatively affect the process of germination of watercress, mustard, corn. The level of phytotoxic effect of sludge on the germination of soybeans and barley was within acceptable limits and did not exceed 3.33%. The study of migration of heavy metals present in the sludge and their accumulation during the growth and development of plants showed their insignificant content regardless of the sludge content. Only the lead content was higher than in the control 2.13 times and 1.83 times higher than in "relatively clean soil". Conclusions. Determination of phytotoxicity of this type of sludge on the process of germination and vegetation changes of plants should be carried out on the most sensitive crops - watercress and mustard. A study of the migration of heavy metals present in the sludge and their accumulation during plant growth showed the presence of bound forms of heavy metals copper, nickel, cadmium and zinc - the migration of which has not been established. However, mobile forms of lead that migrate from the sludge and accumulate in plants have been identified.

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Determining the Concentration of Some Heavy Metals in Olt River. The Impact of the Heavy Metals from the Waste Waters from Rm. V�lcea Chemical Plant over Natural Emissary River Olt

Revista de Chimie ◽

10.37358/rc.08.9.1953 ◽

2008 ◽

Vol 59 (9) ◽

Author(s):

Stefan Valentin Branescu ◽

Alexandru Popescu ◽

Daniela Marinescu

Keyword(s):

Waste Water ◽

Heavy Metals ◽

Atomic Absorption Spectrometry ◽

Atomic Absorption ◽

Absorption Spectrometry ◽

Waste Waters ◽

Toxic Heavy Metals ◽

Spectrometry Method ◽

The Impact

The pollution of water surfaces with heavy metals often has disastrous effects on environment. That is why the determination of heavy metals� concentrations at levels of ppm or ppb is strictly necessary. This paper presents a method for the determination of these components� ( Ni, Cr, Zn, Fe, Cu) distribution on the Olt river course - their impact on the Olt river- as a result of the evacuation of waste water with toxic heavy metals from Rm.Valcea Chemical Platfom. The most toxic heavy metals determined were: Ni, Cr, Zn, Fe, Cu,. The concentration of these metals was determined by atomic absorption spectrometry method (AAS) using an analyzer type A ANALYST 700.

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Біоіндикаційна оцінка впливу місць видалення відходів на стан навколишнього природного середовища

Вісник Полтавської державної аграрної академії ◽

10.31210/visnyk2018.01.15 ◽

2018 ◽

pp. 88-92

Author(s):

П. В. Писаренко ◽

М. С. Самойлік ◽

А. В. Молчанова

Keyword(s):

Heavy Metals ◽

Triticum Aestivum ◽

Toxic Effect ◽

Contaminated Soil ◽

Household Waste ◽

Long Run ◽

The Impact ◽

The Given ◽

The City

У статті проведено оцінку впливу звалища твердих побутових відходів (на прикладі звалища відходів міста Полтави) на біоту через визначення фітотоксичного впливу забрудненого ґрунту на схожість, ріст та кореневу систему рослин Triticum aestivum. Встановлено, що рівні пригніченості ростових процесів у даному ґрунті є вище за середні, що вказує на високий вміст важких металів у даному ґрунті та їх токсичний вплив на біоту у місці розташування звалища. Обґрунтовано, що використання пребіотика «Sviteco-PBG» дає змогу значно покращити якість ґрунту, і вже після 14 днів токсичний вплив на біоту в середньому зменшився на 10 %. Отже, використання пребіотиків дає змогу значно підвищити ефективність очистки ґрунту від важких металів, що в перспективі надає можливість повернути забруднені землі у господарський обіг. The article assesses the impact of landfill of solid household waste (for example, landfill of waste from the city of Poltava) on biota due to the determination of the phytotoxic influence of contaminated soil on the growth, growth and root system of plants Triticum aestivum. It has been established that the level of depression of growth processes in this soil is higher than average, which indicates the high content of heavy metals in the given soil and their toxic effect on the biota at the location of the landfill. It was substantiated that using «Sviteco-PBG» prebiotic can significantly improve the soil quality, and after 14 days the toxic effect on biota has decreased by 10 % on average. Thus, the use of prebiotics can significantly improve the efficiency of soil cleaning from heavy metals, which in the long run provides an opportunity to return the contaminated land to economic circulation.

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Impact of Artana mine on heavy metal pollution of the Marec river in Kosovo

Mining of Mineral Deposits ◽

10.33271/mining15.02.018 ◽

2021 ◽

Vol 15 (2) ◽

pp. 18-24

Author(s):

Milaim Sadiku ◽

Sadija Kadriu ◽

Mensur Kelmendi ◽

Letafete Latifi

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Water Samples ◽

Metal Pollution ◽

Heavy Metal Pollution ◽

Complex Analysis ◽

Analytical Techniques ◽

Industrial Complex ◽

The Impact

Purpose. This paper aims to reflect the extent of the impact of the Artana mine on heavy metal pollution of the waters of the Marec river. Mineralogical pollution of this river resulted in almost total degradation of biota. Methods. To be as realistic as possible in assessing the water quality of the Marec river and of a single spring located in the research area and used for drinking, we have applied the standard methods ISO 5667-6 for surface water and ISO 5667-11 for groundwater. The sampling and the quantity of the samples, as well as their transportation, was done in full compliance with the ISO 5667-1.3 method. Whereas, the conservation of samples taken for the determination of heavy metals is done according to the APHA conservation procedure. For the extraction (mineralization) of heavy metals in the samples taken, the EPA-3015A method was applied, while for the determination of the concentration of heavy metals the SAA (Atomic Absorption Spectrophotometry) measurement technique was applied. Findings. As a result of the industrial activity of the Artana mine, it has been ascertained that the main causes of the pollution of the Marec river waters and the habitat around it is the mineral exploitation activity in this industrial complex. Analysis of water samples discharged from the mine, flotation and drainage of landfills reflect the real state of heavy metals concentration in the Marec river. Originality. In order for the results to realistically reflect the degree of heavy metals concentration in the waters of this river, we have implemented existing and advanced analytical techniques. Practical implications. The water samples from the Marec river were taken and analyzed in January and July 2020. The analysis performed showed significant exceedance of heavy metals concentration in all sampling sites located in the studied industrial area.

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Heavy Metals and Physicochemical Parameters Evaluation in the Upper Reaches of Bonny River, Niger Delta, Nigeria

Journal of Applied Sciences and Environmental Management ◽

10.4314/jasem.v25i8.1 ◽

2021 ◽

Vol 25 (8) ◽

pp. 1341-1348

Author(s):

J.A. Akankali ◽

I.C. Davies

Keyword(s):

Heavy Metals ◽

Niger Delta ◽

Physicochemical Parameters ◽

Heavy Metal Contamination ◽

Anthropogenic Activities ◽

Physicochemical Characteristics ◽

Accumulation Factor ◽

Routine Monitoring ◽

The Impact

The objectives of the study were to determine distribution of heavy metal contamination in water, sediments and biota (Callinectes amniciola) of the upper reaches of the Bonny Estuary and to determine the impact on physicochemical characteristics of the water body. Sampled was from January to June 2020. The physicochemical parameters of the water varied slightly across the months but were within FEPA/WHO (2003) acceptable limits. Furthermore; the study compared the seasonal variations and determination of Bio-accumulation Factor (BF) of C. amnicola with respect to sediment. The study site is a tidal creek that drains into the main Bonny River channel within Niger Delta, Nigeria. The sampled locations/stations include Trans-Amadi slaughter in Azuabie {N4°81'49.9 and E7°04'63.4}, Okpoka Creek in Abuloma {N4°78'02.43 and E7°06'66.12} and Okirika Jetty {N4°73'70.04 and E7°09'56.93}. Samples of surface water, sediments and swimming crabs were collected from three different stations which were at least 1000 meters apart. The results of this study show that concentrations of the heavy metals (Fe and Zn) were both higher in the three media than the approved limits prescribed by the local regulatory authority. Although Cu was relatively within acceptable limit in the three media. There is therefore the need to control the anthropogenic activities within or around the river. This will help to prevent effluent and solid waste discharges that lead to increase in the concentration of heavy metals in the aquatic environment. Routine monitoring should be encouraged to identify the major sources of heavy metals introduction into the river and their impacts on the aquatic resources.

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