Contamination Level and Speciation of Heavy Metals in Sediments from Yundang Lake, Xiamen

2009 ◽  
Author(s):  
Jing Lin ◽  
Minggang Cai ◽  
Anxiang Qi ◽  
Hongyou Hu ◽  
Canrong Qiu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Contamination Level

scholarly journals Characterization of heavy metal in soils as affected by long-term irrigation with industrial wastewater

2018 ◽  
Vol 9 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Bushra Haroon ◽  
An Ping ◽  
Arshid Pervez ◽  
Faridullah ◽  
Muhammad Irshad
Keyword(s):  
Heavy Metals ◽  
Industrial Wastewater ◽  
Industrial Effluent ◽  
Contamination Level ◽  
Ph Values ◽  
Exchangeable Fraction ◽  
Irrigated Soils ◽  
Exchangeable Form

AbstractInvestigation of heavy metals (HM) fractions in soils irrigated with wastewater (WW) would ascertain their bioavailability and contamination level in soils. This study investigated HM fractions in soils after long-term WW irrigation. WW irrigation profoundly affected HM fractions in soil. The ranges of HM concentrations in soils irrigated with WW were apparently wide. All fractions were significantly higher in the fields irrigated with industrial WW than rain-fed fields. HM concentrations varied in the soils as Pb > Cu > Ni > Zn > Fe > Cd > Mn after WW irrigation. In rainfed fields, HM concentrations differed in soils as Fe > Zn > Mn > Pb > Cd > Cu > Ni. The HM fractions were dominant in the residual form followed by oxides bound and carbonate associated fractions in WW-irrigated soils. Lower contents of HM in the soil were obtained in the exchangeable fraction. WW irrigation resulted in the transformation of HM into different fractions as residual > oxide associated > carbonate associated > organically bound > exchangeable form. Repeated WW irrigation increased pH values of the soils. The higher EC of soil indicated an accumulation of salts in the soils due to WW irrigation. Mitigation of HM contamination in Hattar industrial effluent is required before irrigation.

Contamination Level and Spatial Distribution of Heavy Metals in Water and Sediments of El Guájaro Reservoir, Colombia

2018 ◽  
Vol 101 (1) ◽  
pp. 61-67 ◽  
Author(s):  
Ana Carolina Torregroza-Espinosa ◽  
Eliana Martínez-Mera ◽  
Daniel Castañeda-Valbuena ◽  
Luis Carlos González-Márquez ◽  
Franklin Torres-Bejarano
Keyword(s):  
Heavy Metals ◽  
Spatial Distribution ◽  
Contamination Level

Evaluating the mobile heavy metal pool in soakaway sediment, road dust and soil through sequential extraction and isotopic exchange

2010 ◽  
Vol 62 (4) ◽  
pp. 920-928 ◽  
Author(s):  
Manish Kumar ◽  
Hiroaki Furumai ◽  
Futoshi Kurisu ◽  
Ikuro Kasuga
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Sequential Extraction ◽  
Isotopic Exchange ◽  
Road Dust ◽  
Weak Acid ◽  
Isotopic Dilution ◽  
Contamination Level ◽  
Isotopic Tracers ◽  
Exchangeable Fraction

Selective sequential dissolution (SSD) and isotopic dilution are two most commonly applied techniques for the measurement of mobile fraction of heavy metal present in the urban environment. This work examined the compliance between SSD proposed by the Community Bureau of Reference (BCR) and isotopic dilution technique (IDT) for determination of mobile pool of heavy metal contained in soakaway sediment, road dust, and soil sample. Heavy metals (Cu, Zn, Cd and Pb) were fractionated using the three-stage BCR protocol, while isotopically exchangeable metal concentrations (E-value) were investigated through isotopic tracers (111Cd, 65Cu, 207Pb and 66Zn). In general, total contamination level, E-value and BCR exchangeable fractions of different samples followed the similar order of road dust > soakaway sediment > soil. Results revealed that the E-value exceeded the BCR exchangeable fraction in all samples. In addition, the first three fractions of BCR which have potential to become mobile under certain environmental conditions were collectively termed as “potential mobile pool” and compared with E-value. It was concluded that metal extracted by weak acid underestimates the exchangeable fraction while the potential mobile pool extracted by three reagents overestimates the real mobile forms of heavy metals. However, better mobility characteristics of heavy metals can be assessed by coupling information obtained through sequential extraction and isotopic exchange.

scholarly journals Tracing heavy metals in urban ecosystems through the study of bat guano - a preliminary study from Kerala, India

2020 ◽  
Vol 12 (10) ◽  
pp. 16377-16379
Author(s):  
Jithin Johnson ◽  
Moncey Vincent
Keyword(s):  
Heavy Metals ◽  
Urban Ecosystems ◽  
Contamination Level ◽  
Non Invasive ◽  
Copper Manganese ◽  
Heavy Metals Contamination ◽  
Indian State ◽  
Preliminary Study ◽  
Bat Guano

Abstract: Bat guano serves as a potential bio-indicator tool for accessing the heavy metals contamination level in bats.  Such a non-invasive tool also permits an assessment of the plausible risks of heavy metal pollution among wildlife, humans, and the ecosystem.  The study provides the first assessment of metals such as mercury, chromium, copper, manganese, and nickel in bat guano from the Indian state of Kerala, thus providing us valuable information on the quality of the environment.

scholarly journals Landscape-geochemical preconditions and regularities of toxic elements distribution on “Oleshkivski pisky” military training site territory

2020 ◽  
pp. 34-43
Author(s):  
A. Splodytel
Keyword(s):  
Heavy Metals ◽  
Soil Profile ◽  
Military Training ◽  
Water Soluble ◽  
Soluble Form ◽  
Contamination Level ◽  
Training Site ◽  
Mobile Forms ◽  
Migration Dynamics ◽  
The Military

It is characterized main features of landscape-geochemical structure of “Oleshkivski pisky” military range. It is analysed special aspects of military training activity influence on the of soils and plants contamination level with heavy metals. Sampling scheme for studying of heavy metals migration features, with respect to landscape structure of the territory is substantiated. Special features of heavy metals distribution in soils at different distances from firing positions within military range have been determined. It is investigated distribution and accumulation of I and II danger class heavy metals in soil and vegetational cover of the military training site. The regularities of spatial distribution of mobile and potentially accessible forms of heavy metals are determined. It was defined that content of heavy metals in three movable forms are represented in the following geochemical units, mg/kg: in acid soluble form – Mn > Zn > Pb > Cu > V > Ni > Co > Cd; in exchangeable form – Mn > Zn > Pb > V > Co = Ni > Cu > Cd; in water soluble form – Mn > Zn > Pb = V > Co > Ni > Cd > Cu. It is presented studies results on accumulation intensity and the nature of distribution of gross and mobile heavy metals forms in soil space and on their migration in the soil profile. The dominant technogenic geochemical unit was extracted: Cd > Hg > Pb > Cu > Zn > Ni > V > Co > Mn. Landscapes with maximum polyelement contamination have been identified. Landscape-geochemical map of “Oleshkivski pisky” military training site territory was drawn, relying on own field and experimental materials. Migration dynamics of Ni, Zn, Cu, V, Pb and other heavy metals mobile forms in the soil profile of soddy underdeveloped sandy soil during 2015–2019 under impact contamination levels has been determinated. The peculiarities of heavy metals mobile forms absorption in typical plant species of the military range territory during 2015–2019 vegetation periods were clarified.

scholarly journals Bać się czy się nie bać? Bioakumulacja, bioindykacja i toksyczność metali ciężkich Rośliny w świetle badań terenowych i laboratoryjnych

2021 ◽  
pp. 225-253
Author(s):  
Aleksandra Nadgórska-Socha
Keyword(s):  
Heavy Metals ◽  
Adverse Effects ◽  
Plant Defence ◽  
Contamination Level ◽  
Laboratory Studies ◽  
Defence Mechanisms ◽  
Adverse Health Effects ◽  
Environment And Development ◽  
Contamination Levels ◽  
Plant Defence Mechanisms

Heavy metals that pose a threat to the environment include lead (Pb), zinc (Zn), copper (Cu), arsenic (As), cadmium (Cd), chromium (Cr), nickel (Ni) and mercury (Hg). Biomonitoring of environmental quality using plants is widely accepted as a reliable and inexpensive way of obtaining information on contamination also by heavy metals. It allows the assessment of the direction of changes in the natural environment and development of prognoses and methods for early warning related to predicted transformations in ecosystems. This paper presents the results of field and laboratory studies on floristic biodiversity in the areas of southern Poland related to extraction and processing of Zn and Pb ores. The paper also shows the selected plant defence mechanisms against the excess of heavy metals and the results of bioindication studies using different plant species, including the selected metallophytes related to the assessment of contamination levels and the most frequently used plant ecophysiological parameters. It is necessary to monitor contamination level, popularize knowledge and take action at the level of local authorities to mitigate adverse effects of human activity, bearing in mind possible bioaccumulation of heavy metals in the food chain and the adverse health effects associated with environmental contamination.

scholarly journals Heavy Metals Content in Herpetobiontic Arthropoda on the Territory of Landfills of the Kharkіv City

2021 ◽  
Keyword(s):  
Heavy Metals ◽  
Species Composition ◽  
High Sensitivity ◽  
Absorption Spectrometry ◽  
Contamination Level ◽  
Multiple Indicators ◽  
Potential Safety ◽  
Municipal Solid Waste Landfills ◽  
Solid Waste Landfills ◽  
Occurrence Of Species

Purpose. To determine the contamination level of biotic components of the ecosystem of municipal solid waste landfills in the Kharkiv region by sensitive to anthropogenic changes herpetobiotic arthropods. Methods. The species composition of herpetobiotic arthropods was determined by the Barber's traps method. The occurrence of species was evaluated according to the method of A.V. Selikhovkin. The content of heavy metals (Pb, Cd, Cr, Ni) in the ash obtained from herpetobionts was determined by atomic absorption spectrometry. Results. The research is the first link of the accumulation of heavy metals by mosquitoes as a component of trophic chains. The species composition of herpetobiotic arthropods was determined - 21 species from 15 families. On the territory of Rogan landfill 15 species from 12 families, and Dergachv -12 species from 8 families. The zoning of the territory according to the degree of landscape transformation was carried out and the structure of the species composition of herpetobionts according to the zones was determined. The basic regularities of zonal differentiation of species in technogenic disturbed territories are determined. As a result of assessing the occurrence of species in the study areas, 7 dominant species were identified at two landfills, in the bodies of which the content of heavy metals was determined. The landscape conditions and ecological situation influences the species composition of the herpetobiontic fauna in a direct way, which confirms the monodominant nature of the species on both landfills. Conclusions. Zonal accommodation and the number of studied fauna on two landfills is different, that indicates their high sensitivity to various environmental conditions. Multiple indicators of heavy metals in the organisms of invertebrate’s organisms indicate the potential safety of these animals on the landfills for their consumers.

scholarly journals Intensity of free radical processes in the leaves of arboreal plants under act of industrial dust borne extracts

2010 ◽  
pp. 83-87
Author(s):  
Olga Piskova ◽  
Vitalii Gryshko
Keyword(s):  
Heavy Metals ◽  
Lipid Peroxidation ◽  
Contamination Level ◽  
Base Line ◽  
Picea Pungens ◽  
Industrial Dust ◽  
Species Specific ◽  
Line Level ◽  
Radical Processes

The influence of industrial pollutants on the intensity of lipid peroxidation in the assimilatory organs of arboreal plant was investigated. The differential changes of the probed indexes are set depending on the species. Information is got can testify to participation of lipid peroxidation products in forming of reactions-answers of arboreal plants on influence of industrial dust borne extract with content of heavy metals. Determination of level and rates of accumulation of Zn, Ni, Pb and Cd, in the leaves of arboreal plants in the conditions of different contamination level allowed to take species to two groups. To the first (phytoextraction potential exceeds a base-line level in 10 times) belong Populus bolleana Lauche, P. italica (Du Roi) Moench, Picea pungens Engelm and Sorbus aucuparia L. To the second (exceeds a base-line level from 5 to 10 times) belong Acer negundo L., Aesculus hippocastanum L., Betula pendula Roth and Tilia cordata Mill. The most substantial increase of peroxidation secondary product content (more than in 2.5 times) is peculiar for B. pendula, A. hippocastanum and P. pungens Engelm., that well conforms to the rates of heavy metals translocation, it has however species-specific character.

Source separated urine-nutrient and heavy metal content, water saving and faecal contamination

1997 ◽  
Vol 35 (9) ◽  
pp. 145-152 ◽  
Author(s):  
Håkan Jönsson ◽  
Thor-Axel Stenström ◽  
Jan Svensson ◽  
Annika Sundin
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Content ◽  
Nitrogen Loss ◽  
Water Volume ◽  
Contamination Level ◽  
Nutrient Load ◽  
Heavy Metal Concentrations ◽  
Household Wastewater ◽  
Low Levels

Human urine is by far the largest contributor of nutrients to household wastewater. Source separation of urine can significantly decrease the nutrient load on the recipients. By recycling the urine to agriculture as a fertiliser, with very low levels of heavy metals, the nutrients are made into resources instead of becoming pollutants. The amounts and concentrations of nutrients and heavy metals in urine solution from a source separating sewage system were measured. The concentrations of nutrients were high. The ratio of nitrogen to phosphorus was close to the expected value, indicating that the system did not have any large nitrogen loss. The heavy metal concentrations in the urine were low, much lower than that in most chemical fertilisers. Per inhabitant and day, 1.34 litres of urine solution were collected. Of this, 0.34 litres was flush water. The low flush water volume was due to the double flush mechanism of the toilets, which saved 48% of the flush water compared with conventional water closets. Per inhabitant and day, 4.9 g of nitrogen and 0.42 g of phosphorus were collected, which was 86 and 81% respectively of the expected amount. The contamination level of faecal material in the source separated urine was low.

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