scholarly journals Concentrations and loads of cadmium, lead, zinc, and nutrients measured during the 1999 water year within the Spokane River basin, Idaho and Washington

2001 ◽  
Author(s):  
P.F. Woods
Keyword(s):  
River Basin ◽  
Spokane River ◽  
Lead Zinc ◽  
Cadmium Lead

scholarly journals CONCENTRATION OF HEAVY METALS IN WATER FLOWS IN THE AREA OF UNALSKY TAILING DUMP AND ARDON RIVER

2018 ◽  
Vol 13 (2) ◽  
pp. 113-122 ◽  
Author(s):  
Dzerassa N. Chigoeva ◽  
Inna Z. Kamanina ◽  
Svetlana P. Kaplina
Keyword(s):  
Heavy Metals ◽  
Production Capacity ◽  
Chemical Pollution ◽  
Environmental Disaster ◽  
Tailing Dump ◽  
Maximum Permissible Concentrations ◽  
History Of ◽  
Lead Zinc ◽  
Domestic Use ◽  
Cadmium Lead

The long history of development of deposits of lead-zinc ores of the Sadonsky mining region led to the formation of extensive halos of chemical pollution of surface watercourses. Aim. The aim of this study is to monitor surface watercourses in the area of the Unalsky tailing dumps and the Kholst deposit by points of sampling of 1992-2004. Sampling was conducted in the summer of 2016. Methods. The content of heavy metals of 2 and 3 hazard classes (Pb, Cd, Ni, Zn and Cu) was studied by atomic absorption. The contribution of the Unaldon River and Unalsky tailing dump to the pollution of the Ardon River. Results. The highest content of cadmium, lead and zinc, significantly exceeding the maximum permissible concentrations (MPC) in the water bodies of cultural and domestic use is found in the Ardon River down from the Unalsky tailing dump. The flow of heavy metals into the Unaldon River with adit waters compared with the observation period of 1992-2004 decreased noticeably. In conditions of a reduction in the production capacity of mining and processing enterprises, the leaching of heavy metals from mountain dumps and excavations make an insignificant contribution to the pollution of the Ardon River in comparison with the Unalsky tailing dump. Conclusion. The state of the Ardon River down from the discharge from the tailing dump corresponds to the "environmental disaster" category. The condition of the rivers Mayramdon and Unaldon according to the content of heavy metals corresponds to a "relatively satisfactory" type.

scholarly journals INFLUENCE OF ANTHROPOGENIC AND BIOTIC FACTORS ON THE POPULATION OF BEE COLONIES IN THE RYAZAN REGION

2021 ◽  
pp. 23-30
Author(s):  
Е.О. ЛАРЬКИНА ◽  
Д.В. СВИЩУК ◽  
Е.П. ЛАПЫНИНА
Keyword(s):  
Honey Bee ◽  
Honey Bees ◽  
Heavy Metal Contamination ◽  
Soil Samples ◽  
Control Group ◽  
Biotic Factors ◽  
Three Samples ◽  
Lead Zinc ◽  
Cadmium Lead ◽  
Bee Colonies

Проблема и цель. Целью научного исследования является изучение влияния антропогенных и биотических факторов на популяцию медоносной пчелы Рязанской области. Методология. Объект исследования: пчелиные семьи пасек разных районов Рязанской области, продукты пчеловодства. Для исследования были выбраны четыре участка пасеки, расположенные в границах Рязанской области. Опытные группы (далее ОГ) сформировали следующие участки: Кадомский район, д. Большое Лунино (54°34'58'' N, 42°21'25'' E) – ОГ №1; Захаровский район, д. Фурмакино (54°31'18'' N, 38°57'59'' E) – ОГ №2; Рыбновский район, с. Алешня (54°65'23'' N, 39°34'44'‘ E) – ОГ №3. В качестве контрольной группы (далее КГ) выбрана экспериментальная пасека Рыбновского района, с. Булыгино (54°66'58'' N, 39°26'52'' E). Пробоподготовка осуществлялась в период начала активного медосбора, путем отбора трех образцов каждого природного объекта. Образцы медоносных пчел отбирались от 5 пчелиных семей с каждого исследуемого участка, а также проводился отбор проб воды, медоносных растений и почвы. Для анализа степени пораженности заболеваниями нозематоз и варроатоз от каждой исследуемой пчелиной семьи было отобрано по 50-60 рабочих пчел. Результаты. Проведен сравнительный анализ на содержание токсичных металлов в образцахводы, почвы, теле медоносной пчелы, медоносных растений, пыльцевой обножки. Полученные данные свидетельствуют о том, что содержание кадмия, свинца, цинка и меди в образцах воды, медоносных растений, пыльцевой обножки и теле медоносных пчел находятся в предельно допустимой концентрации. Анализ образцов почвы показал превышение допустимой концентрации во всех исследуемых районах, за исключением Кадомского. Заключение. Загрязнение тяжелыми металлами прослеживается в цепочке: почва – медоносные растения – медоносная пчела – продукты пчеловодства в образцах Захаровского р-на, д. Фурмакино. В связи с этим размещение пасек в местах с повышенным содержанием токсичных элементов в природной среде может создавать угрозу интоксикации медоносных пчел и заноса этих металлов в продукты пчеловодства. Problem and goal. The purpose of the research is to study the infuence of anthropogenic and biotic factors on the population of the honey bee of the Ryazan region. Methodology. Object of research: bee families of apiaries of diferent districts of the Ryazan region, bee products. Four apiary plots located within the boundaries of the Ryazan Region were selected for the study. The experimental groups (hereinafter referred to as OG) formed the following sections: Kadomsky district, Bolshoe Lunino village (54°34 '58" N, 42°21'25" E) – OG No. 1, Zakharovsky district, Furmakino village (54°31'18" N, 38°57'59" E) – OG No. 2, Rybnovsky district, Aleshnya village (54°65'23" N, 39°34'44" E) - OG No. 3. As a control group (hereinafter referred to as the KG), the experimental apiary of the Rybnovsky district, p. Bulygino (54°66'58" N, 39°26'52" E). Sample preparation was carried out during the beginning of the active honey collection, by selecting three samples of each natural object. Samples of honey bees were taken from 5 bee colonies from each study site, as well as water, honey plants and soil samples. To analyze the degree of infection with nosematosis and varroatosis from each studied bee family, 50-60 worker bees were selected. Results. A comparative analysis of the content of toxic metals in samples of water, soil, honeybee body, honey plants, pollen pollen was carried out. The data obtained indicate that the content of cadmium, lead, zinc and copper in the samples of water, honey plants, pollen pollen and honey bees are in the maximum permissible concentration. The analysis of soil samples showed an excess of the permissible concentration in all the studied areas, with the exception of Kadomsky. Conclusion. Heavy metal contamination can be traced in the chain: soil-honey plants – honey bee-bee products in the samples of Zakharovsky district, Furmakino village. In this regard, the placement of apiaries in places with a high content of toxic elements in the natural environment can pose a threat to the intoxication of honey bees and the introduction of these metals into beekeeping products.

scholarly journals Cadmium, lead, zinc and copper content in herbaceous plants overgrowing furnace waste landfill / Zawartość kadmu, ołowiu, cynku i miedzi w roślinności zielnej porastającej składowisko odpadów paleniskowych

2013 ◽  
Vol 24 (3) ◽  
pp. 33-37
Author(s):  
Artur Szwalec ◽  
Paweł Mundała ◽  
Renata Kędzior
Keyword(s):  
Copper Content ◽  
Coal Ash ◽  
Negative Influence ◽  
Soil Samples ◽  
Herbaceous Plants ◽  
Herbaceous Plant ◽  
Waste Landfill ◽  
Lead Zinc ◽  
Cadmium Lead ◽  
East West

Abstract Electricity and heat have been produced in Poland by the combustion of coal. Ash-slag, a by-product of this process, has been mainly deposited in landfills. Until the end of 2011, about 258 million tonnes of ash-slag have been deposited in landfills. Herbaceous plant and soil samples were taken from four directions (east, west, south and north) in three locations on the landfill embankment: base, middle and top. The negative influence of furnace waste landfill on herbaceous plants was confirmed by the phytoaccumulation indexes (WF) of the examined elements: WF Cd - medium to intensive; WF Pb - low to medium; WF Zn - low to intensive and WF Cu - low to medium.

Influence of toxic metals on activity of acid and alkaline phosphatase enzymes in metal-contaminated landfill soils

Soil Research ◽  
2004 ◽  
Vol 42 (3) ◽  
pp. 339 ◽  
Author(s):  
S. Roy ◽  
P. Bhattacharyya ◽  
A. K. Ghosh
Keyword(s):  
Alkaline Phosphatase ◽  
Toxic Metals ◽  
Enzyme Activities ◽  
Alluvial Soil ◽  
Enzyme Synthesis ◽  
Soil Enzyme Activities ◽  
Lead Zinc ◽  
Cadmium Lead ◽  
Iron Manganese ◽  
Soil Acid Phosphatase

A study was conducted to determine the effect of toxic metals on soil acid phosphatase (EC 3.1.3.2) and alkaline phosphatase (EC 3.1.3.1) enzyme activities in landfill soils. The enzyme activities were consistently higher in the landfill soils than in an uncontaminated alluvial soil. The landfill soils contained higher concentrations of metals (iron, manganese, cadmium, lead, zinc, copper) than did the alluvial soil. Enzyme activities were negatively correlated with the metals, with inhibition increasing with the bioavailability of the metals. It is suggested that the metals affected enzyme activities by behaving synergistically or additively with each other. Although the landfill soils had higher enzyme activities than the alluvial soil due to higher organic matter concentrations, the ratios of enzyme activity/organic carbon indicated that inhibition of enzyme synthesis and stability had occurred due to metal stress.

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