Special Issue on Heavy Metals in the Environment—Causes and Consequences

Chemical composition of leaves of Sonneratia apetala Buch.-Ham. collected from three islands (chars) representing three hydrological regimes in a segment of the coastal zone of Bangladesh was studied. Their relations to some soil chemical and physical variables have also been investigated. The results showed that concentrations of B, C, Fe, Ga, Li, Mg, Mn, N, Na, P, Zn and Sr in leaves of S. apetala grown in different islands differed significantly. It was also revealed that some heavy metals, viz. Mn, Fe, Al, Sr and Ti showed wide range of concentrations. The leaves from one of the locations in Motherbunia island were characterized by exceptional high concentrations of heavy metals such as Al, As, Cu, Fe, Li, Ni, Pb that may be due to local contamination. Leaves sampled in the most seaward locations of the same island had highest concentrations of Ba, Ca, Cu, Mn and Na. High Mn concentration was found in the leaves of S. apetala of Motherbunia island. Correlations among soil and plant samples were generally very weak and organic matter content of soil did not appear to play a significant role in the nutrient supply of S. apetala. Key words: Coastal zone; tidal inundation; elemental concentration; Sonneratia apetala DOI: 10.3329/bjb.v39i1.5528Bangladesh J. Bot. 39(1): 61-69, 2010 (June)

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The Influence of Zn and Cd Accumulation on the Growth and Development of Medicinal Plants in the Impact Zone of the Novocherkassk Power Station

KnE Life Sciences ◽

10.18502/kls.v7i1.10104 ◽

2022 ◽

Author(s):

Victor Chaplygin ◽

Tatiana Minkina ◽

Saglara Mandzhieva ◽

Dina Nevidomskaya ◽

Natalia Chernikova ◽

...

Keyword(s):

Heavy Metals ◽

Chemical Composition ◽

Poa Pratensis ◽

Negative Consequences ◽

Industrial Emissions ◽

Power Station ◽

Cd Accumulation ◽

Elytrigia Repens ◽

Medical Plants ◽

The Impact

Over the pastdecade, particular attention has been paid to studies of the chemical composition of medical plants to identify the possible negative consequences of using raw plant material polluted with heavy metals for the production of medical drugs. In our study, we analyzed the chemical composition of the medical plants growing in the impact area of the Novocherkassk power station. Specifically, the plants Artemisia austriaca, Poa pratensis and Elytrigia repenswere examined for the analysis.The content and distribution of Zn and Cd, which are most distributed in industrial emissions and belong to the first class of hazardous elements, were measured. The maximum permissible content (MPC) of Zn in the raw material of Artemisia austriaca and Elytrigia repens was found, as was the maximum content of Cd in all analyzed plants growing in the 5km area around thepower station. The plant Artemisia austriacawasfound to have Zn and Cd accumulation in itsabovegroundcomponents, while in Poa pratensis and Elytrigia repens, accumulation was in the roots. The morphobiometric parameters of the plants were mostly dependent on the soil properties, followed by the degree of technogenic load. The content of Zn and Cd in the medical drugs was higher than the MPC without visible features of heavy metal pollution and so these plants weredangerous for human health. Keywords: heavy metals, technogenic load, phytoreagents, morphometric parameters

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Honey: Chemical Composition, Stability and Authenticity

Foods ◽

10.3390/foods8110577 ◽

2019 ◽

Vol 8 (11) ◽

pp. 577

Author(s):

Olga Escuredo ◽

M. Carmen Seijo

Keyword(s):

Chemical Composition ◽

Physical Properties ◽

Statistical Methods ◽

Analytical Techniques ◽

Food Product ◽

Botanical Origin ◽

Special Issue ◽

Research Papers ◽

Practical Solution ◽

Plant Sources

This Special Issue contains innovative research papers on the characterization, chemical composition and physical properties of honey. This constitutes very useful information to avoid frauds and to guarantee the authenticity of this food product. The knowledge of the particularities of honey is increasingly demanded by beekeepers and consumers, and also by labs to typify honeys according to their botanical origin and to check their quality. Melissopalynological, sensorial and physicochemical techniques are being used to study the characteristics of honeys samples from different plant sources and geographical areas. The combination of these analytical techniques with mathematical and statistical methods or chemometrics allows researchers to identify a set of variables or individual parameters that define independent samples, providing a practical solution to classify honey according to the geographical or the botanical origin.

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Utilization of sewage sludge ashes in the brick and tile industry

Water Science & Technology ◽

10.2166/wst.1997.0418 ◽

1997 ◽

Vol 36 (11) ◽

pp. 251-258 ◽

Cited By ~ 26

Author(s):

Bernd Wiebusch ◽

Carl Franz Seyfried

Keyword(s):

Heavy Metals ◽

Wastewater Treatment ◽

Chemical Composition ◽

Sewage Sludge ◽

Treatment Methods ◽

Sludge Incineration ◽

Brick And Tile ◽

The Impact

Several aspects of using ashes from sewage sludge incineration in the brick and tile industry have been examined. After discussing the item of ash production in Germany, the impact of different wastewater treatment methods is described; for instance, the use of precipitation agents containing iron will considerably influence the ash quality. Depending on their respective chemical composition, different ashes have different effects on the ceramic qualities of the bricks made of clay blended with ashes. These effects will be shown in regard to the major ceramic parameters. Similarly, the quality of the ashes also influences the elution behaviour and the mineral fixation of heavy metals.

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Effect of Chromium and Lead on Yield, Chemical Composition of Essential Oil, and Accumulation of Heavy Metals of Mint Species

Communications in Soil Science and Plant Analysis ◽

10.1080/00103624.2010.504798 ◽

2010 ◽

Vol 41 (18) ◽

pp. 2170-2186 ◽

Cited By ~ 25

Author(s):

Arun Prasad ◽

Abhishek Kumar Singh ◽

Sukhmal Chand ◽

C. S. Chanotiya ◽

D. D. Patra

Keyword(s):

Heavy Metals ◽

Chemical Composition ◽

Essential Oil

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A Study on Disposal of Sludge of the A/O of Denitrogenation when Enhance by Zeolite and Chemical Phosphorus Removal

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.347-353.2003 ◽

2011 ◽

Vol 347-353 ◽

pp. 2003-2007

Author(s):

Ping Qin ◽

Guan Wen Cheng ◽

Zhi Chao Wu ◽

Xiang Feng Huang ◽

Fei Juan Zhang

Keyword(s):

Heavy Metals ◽

Organic Matter ◽

Chemical Composition ◽

Phosphorus Removal ◽

Municipal Wastewater ◽

Low Resistance ◽

Membrane Flux ◽

Inorganic Substances ◽

The Way

The result showed that, after addition of a suitable content zeolite to A/O tank, the zeolite sludge had a low resistance and a high membrane flux. The heavy metals in municipal wastewater were inactivated and types of organic matter were adsorbed by the sludge containing zeolite, while sludge compressibility was decreased. It also changed the chemical composition of the sludge and added the inorganic substances such as silicon, aluminum, potassium and sodium, which obviously influenced the way the sludge could be reused.

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New Sorption Materials on the Basis of Aluminosilicates for Wasterwater Treatment

Nano Hybrids and Composites ◽

10.4028/www.scientific.net/nhc.13.190 ◽

2017 ◽

Vol 13 ◽

pp. 190-196

Author(s):

Kristina K. Abdugaffarova ◽

Maksim V. Dorogov ◽

Anatolii A. Vikarchuk ◽

Vlada V. Zabolotskikh ◽

Vladislav S. Firsov

Keyword(s):

Heavy Metals ◽

Methylene Blue ◽

Chemical Composition ◽

Specific Surface ◽

Post Treatment ◽

Pilot Studies ◽

Physical Methods ◽

Structure And Morphology ◽

Composition Structure

This article presents the results of experimental obtaining together with tests of modifications of the granulated sorption aluminosilicate-based material. The chemical composition, structure and morphology of a surface of the obtained modifications of sorbents from clay have been explored. Through a complex of modern physical methods it is established that porosity and a specific surface of clay-based sorbents increased as a result of modification. Pilot studies have shown higher efficiency of new aluminosilicate-based sorbents in comparison with absorbent carbon during sorption of such model pollutants as methylene blue, phenol and ions of heavy metals. Modifications of sorbent which can be effectively used for post treatment of wastewater are revealed.

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Understanding the Mechanism of Arsenic Mobilisation and Behaviour in Tailings Dams

Ghana Mining Journal ◽

10.4314/gm.v17i1.10 ◽

2017 ◽

Vol 17 (1) ◽

pp. 85-89

Author(s):

B. Koomson ◽

E. K. Asiam ◽

W. Skinner ◽

J. Addai-Mensah

Keyword(s):

Electron Microscopy ◽

Heavy Metals ◽

Scanning Electron Microscopy ◽

Chemical Composition ◽

Energy Dispersive Spectroscopy ◽

X Ray ◽

Tailings Dams ◽

Higher Temperature ◽

Lower Temperature ◽

Scanning Electron

This study was carried out on leaching of tailings at 30 ᵒC and 40 ᵒC. The mineralogical and chemical composition of the tailings material were determined by Quantitative X-Ray Diffractometry (QXRD) and Scanning Electron Microscopy combined with Energy Dispersive Spectroscopy (SEM-EDAX). The study revealed that the tailings contain sulphides (arsenopyrite and pyrite) which can leach to produce arsenic (As) and other ions in solution. The acid released during leaching depends on the temperature of leaching. More acid was produced at higher temperature (40 ᵒC) than lower temperature (30 ᵒC). It was established that arsenic precipitation from solution was higher at higher temperature (40 ᵒC) than lower temperature (30 ᵒC). Mimicking the study in a typical tailings environment, it could be proposed that As mobilisation will be enhanced at lower temperature (30 ᵒC) than at higher temperature (40 ᵒC). Keywords: Tailings, Leaching, Arsenopyrite, Heavy metals and Temperature

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