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Найденный: 19 Экземпляр 0.005 sn
Тематический рубрикатор : heavy metals ✕
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Тематический рубрикатор [35]
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Ecology and Environmental Aspects of “Makmalzoloto” Gold Mining Area in Kyrgyzstan

Nazgül İMANBERDİYEVA

This investigation enlightens the original data on the ecological situation of Makmal Valley and neighboring villages Makmal and Chetbulak Toguz-Toro in “Makmalzoloto” gold mining area in Kyrgyzstan. The study was undertaken to put forward the possibilities for preservation of rich biodiversity and ecological state in these villages. The area is under pressure from the activities of gold extraction. Even today environmental pollution and high levels of radiation are observed. The extraction activity has seriously damaged and produced a negative impact on pastures, livestock, as well as biodive ...Более

Глава книги 2018 Fen Fakültesi Vegetation of Central Asia and Environs ( Chapter 13 ) 18 Просмотры
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Sorption characteristics of zeolite and bentonite natural adsorbents modified complex

Zarlık MAYMEKOV

The main objective of our study is to obtain a complex compound from natural adsorbents to purify wastewater with simultaneous sorption of chemical and microbiological substances contained therein, which contribute to disinfection and softening of water, increasing the degree of treated water saturation with calcium, magnesium salts and trace elements, while not requiring the use of sophisticated equipment. The technical result is to create a complex of adsorbents with the sorbing ability of chemical and microbiological pollution, disinfecting and softening water, enriching it with calcium ion ...Более

Статья 2020 Mühendislik Fakültesi News of the National Academy of Sciences of the Republic of Kazakhstan-Series of Geology and Technical Sciences442 ( 4 ) 63 Просмотры
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Assessment of Some Nutrient Contents and Heavy Metal Accumulation in Some Wild Edible Mushrooms in Türkiye

Ali ASLAN

In this study, it was aimed to identify mushrooms gathered from two different regions and localities of Türkiye and to determine their heavy metal and nutrient contents. Four of the mushrooms (Coprinus comatus (O.F. Müll.) Pers, Cantharellus cibarius Fr., Pleurotus ostreatus (Jacq.) P. Kumm. and Lactarius glyciosmus (Fr.) Fr.) from nearby settlements, while the others (Hydnum repandum L., Pleurotus eryngii (DC.) Quél and Lactarius delicious (L.) Gray)) were collected from rural areas. All species have known and consume by local peoples. All identified species were given along with their trophi ...Более

Статья 2023 Fen Fakültesi Mantar Dergisi14 ( 2 ) 10 Просмотры
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In vitro and in vivo screening of bacterial species from contaminated soil for heavy metal biotransformation activity

Tinatin DOOLOTKELDİEVA | Mahabat KONURBAYEVA | Saykal BOBUŞOVA

Heavy metals (HMs) are widely used in various industries. High concentrations of HMs can be severely toxic to plants, animals and humans. Microorganism-based bioremediation has shown significant potential in degrading and detoxifying specific HM contaminants. In this study, we cultivated a range of bacterial strains in liquid and solid nutrient medium containing different concentrations of different HMs to select and analyze bacteria capable of transforming HMs. The bacterial strains most resistant to selected HMs and exhibiting the ability to remove HMs from contaminated soils were identified ...Более

Статья 2024 Ziraat Fakültesi Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants, and Agricultural Wastes ( Published online: 27 Apr 2024 ) 0 Просмотры
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Trace metal levels in edible wild fungi

Zeki SEVEROĞLU

Metal levels (cadmium, cobalt, chromium, copper, iron, nickel, lead and zinc) of seventeen different edible wild fungi species (Agaricus campestris, Calocybe gambosa, Coprinus comatus, Hericium coralloides, Hydnum repandum, H. repandum var. rufescens, Lactarius deliciosus, L. salminocolor, Macrolepiota procera, Pleurotus ostreatus, P. ostreatus var. columbinus, Ramaria aurea, R. stricta, Rhizopogon luteolus, Sparassis crispa, Suillus bovinus, Tricholoma terreum) growing in Bolu-Turkey were measured by inductively coupled plasma optical emission spectrocopy. The obtained data were analyzed with ...Более

Статья 2013 Fen Fakültesi International Journal of Environmental Science and Technology (IJEST)10 ( 2 ) 54 Просмотры
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Cadmium-induced physiological and genotoxic alterations in Bryophyllum daigremontianum

Zeki SEVEROĞLU

When evaluating the negative impacts of heavy metals in the environment, plants can be used as biological indicators in assessing damage done by bio-accumulation of heavy metals. For detecting the genotoxic effects of heavy metals, the RAPD-PCR technique is applied in plants. In this study, Blyophyllum daigremontianum was used as a bio-indicator for Cadmium (Cd) pollution. B. daigremontianum plantlets were obtained from bulbiliferous spurs. They were grown singly in standard pots and each of the experimental groups of 5 replicates were watered daily with Hoagland solution (20 ml) containing 0, ...Более

Доклады конференции 2013 Fen Fakültesi Proceedings of the International Conference on Environmental Science and Technology 28 Просмотры
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1,10-Phenanthroline modified glassy carbon electrode for voltammetric determination of cadmium(II) ions

Ali Osman SOLAK

This study reports the electrochemical modification of glassy carbon (GC) electrode surface with the electro-polymerized form of 1,10-phenanthroline monohydrate (PMH), the characterization of this polyphenanthroline modified electrode (PPMH/GC) and the electroanalytical application suitable for the determination of Cd(II) ions. The PPMH/GC electrode was characterized by cyclic voltammetry, chronoamperometry and atomic force microscopy and formation of polyphenanthroline layer grafted to surface of GC electrode was evidenced. Selectivity of PPMH/GC electrode towards heavy metal ions was investi ...Более

Статья 2011 Mühendislik Fakültesi Sensors and Actuators B: Chemical157 ( 1 ) 67 Просмотры
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Ecological Assessment of Technogenically Disturbed Soils of the Mountain Ecosystems of Kyrgyz Republic Based on the TRIAD Method

Nurzat TOTUBAYEVA | Kanatbek KOCOBAYEV | Aygül USUBALİYEVA | Ciyde TOKPAEVA

Comprehensive studies of soil contamination were performed in the area of settlement Kichi-Kemin (Kyrgyz Republic). Soils of the Kyrgyz Republic are exposed to waste (tailings) of many industrial enterprises of the mining industry not far from the village of A k-Tuz, located 145 km from the capital of Kyrgyz Republic, Bishkek, at an altitude of 2300 m above sea level. It is noted that 4.17 million tons of radioactive waste from one of the enterprises were once disposed of at four tailings in the Kichi-Kemin Valley. The main waste elements are radioactive thorium, heavy metals such as cadmium, ...Более

Статья 2022 Mühendislik Fakültesi Polish Journal of Environmental Studies31 ( 3 ) 63 Просмотры
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СТЕПЕНЬ АККУМУЛЯЦИИ ТЯЖЕЛЫХ МЕТАЛЛОВ В НЕКОТОРЫХ ВИДАХ МАКРОМИЦЕТОВ КЫРГЫЗСТАНА

Nazgül İMANBERDİYEVA

В статье представлены результаты работы по выявлению содержания тяжелых металлов в некоторых видах макромицетов, произрастающих на территории г. Бишкека, в различных по уровню техногенного загрязнения участках. Тяжелые металлы оказывают повреждающее действие на разных структурных уровнях организма и трудно выводятся, поэтому актуальной проблемой является поиск эффективных энтеросорбентов, способных снизить их аккумуляцию в организме человека. Такими свойствами обладают сорбенты из природных продуктов, среди которых особое место занимает полисахарид хитин, благодаря таким его уникальным свойств ...Более

Статья 2022 Fen Fakültesi Международный журнал прикладных и фундаментальных исследований ( 6 ) 79 Просмотры
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Electrochemical Detection of Cadmium and Lead in Rice on Manganese dioxide Reinforced Carboxylated Graphene Oxide Nanofilm

Ali Osman SOLAK

Manganese dioxide decorated carboxylated graphene oxide (Mn-GO-COOH) attached onto the glassy carbon (GC) electrode to develop a new method for the simultaneous determination of Cd2+ and Pb2+ ions in rice samples. Graphene oxide (GO) was attached on 4-aminophenyl covalently modified glassy carbon surface via amide reaction. As-prepared modified material was characterized with XPS, SEM and electrochemical methods. A novel differential pulse anodic stripping voltammetric (DPASV) method was developed for the simultaneous determination of Cd2+ and Pb2+ on the GC/Mn-GO-COOH nanoplatform electrode. ...Более

Статья 2018 Mühendislik Fakültesi MANAS Journal of Engineering (MJEN)6 ( 2 ) 45 Просмотры
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Оценка безопасности рыб, обитающих в водоемах Кыргызской Республики

Aygül USUBALİYEVA

В работе приведены результаты исследования содержания тяжелых металлов (Cu, Pb, Cd, Hg) в мышечной ткани, кожице и костях рыб серебряного карася (Carassius auratus gibelio) и сазана (Cyprinus carpio), обитающих в водоемах Чуйской области и употребляемых в пищу. Выявлено, что концентрация тяжелых металлов в рыбах различается в зависимости от вида рыб из разных водоемов. Результаты анализа показали, что ртуть накапливается, как правило, в больших концентрациях в мышцах рыб (0,083 мкг/г), чем в кожице и костях (0,002 мкг/г). Также обнаружено максимальное содержание свинца в костях рыбы карась 1,0 ...Более

Статья 2017 Mühendislik Fakültesi Проблемы современной науки и образования83 ( 1 ) 77 Просмотры
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Assessment of Cd-induced genotoxic damage in Urtica pilulifera L. using RAPD-PCR analysis

İlhan DOĞAN

Plants can be used as biological indicators in assessing the damage done by bioaccumulation of heavy metals and their negative impact on the environment. In the present research, Roman nettle (Urtica pilulifera L.) was employed as a bioindicator for cadmium (Cd) pollution. The comparisons between unexposed and exposed plant samples revealed inhibition of the root growth (∼25.96% and ∼45.92% after treatment with 100 and 200 µmol/L Cd concentrations, respectively), reduction in the total soluble protein quantities (∼53.92% and ∼66.29% after treatment with 100 and 200 µmol/L Cd concentrations, re ...Более

Статья 2016 Fen Fakültesi Biotechnology and Biotechnological Equipment30 ( 2 ) 108 Просмотры
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