Biosensor: A Boon for Heavy Metals Detection in Natural Water Reservoirs at Higher Altitudes

2020 ◽  
pp. 393-410
Author(s):  
Shraddha Chauhan ◽  
Lata Sheo Bachan Upadhyay
Keyword(s):  
Heavy Metals ◽  
Natural Water ◽  
Water Reservoirs

QUESTIONS ON OPTIMUM DEVELOPMENT OF COMPLEX FOR MULTI-POINT CONTROL AND EVALUATION OF CONTAMINATION OF WATER BASINS POLLUTED BY WASTE WATER OF MINING AND PROCESSING PLANTS

2021 ◽  
pp. 48-54
Author(s):  
B. L. Djafarova
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Natural Water ◽  
Large Scale ◽  
Measuring System ◽  
External Irradiation ◽  
Dissolved Organic Matters ◽  
Processing Plants ◽  
Optimum Type ◽  
Special Limitation

The paper is devoted to questions on optimum development of complex for control and evaluation of contamination of water basins used for collection of industrial waste water. The purpose of the paper is development of scientific-methodical basics for development of measuring system for control and evaluation of contamination of natural water basins with heavy metals using method of attenuation of irradiation of dissolved organic matters excited by external irradiation. The task on optimization of operational regime of measuring complex for control and evaluation of contamination of natural water basins by waste water of large scale point type polluter of environment with heavy metals. The known model of Shtern-Volmer is used as a basis which assumes non-linear relationship between formed complex and fluorescent irradiations attenuation degree. It is noted that potential possibilities of Shtern-Volmers model are used not fully till now. So that in known researches the water objects polluted by several same sources are mainly researched. It is shown that Shtern-Volmer model is also applicable for analysis and estimation of pollution of water basins by single strong polluter that is mining and processing plants. For analysis the suggested special parameter, inversely proportional to concentration of heavy metals in water is used. Integration of this parameter on all possible values of heavy metals concentration and imposition of special limitation condition on the searched for function of dependence of attenuated part of fluorescent irradiation on maximum concentration of heavy metals make it possible to formulate and solve the task on searching of optimum type of this function providing for the optimum regime of operation of the complex.

Water chemistry and water quality pollution indices of heavy metals: a case study of Chahnimeh Water Reservoirs, Southeast of Iran

2019 ◽  
Vol 4 (1) ◽  
pp. 63-79
Author(s):  
H. Hosseini ◽  
A. Shakeri ◽  
M. Rezaei ◽  
M. Dashti Barmaki ◽  
M. Rastegari Mehr
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Water Chemistry ◽  
Pollution Indices ◽  
Water Reservoirs

scholarly journals METHOD FOR CLEANING WATER FROM SALTS OF HEAVY METALS

2019 ◽  
Vol 8 ◽  
pp. 104-108
Author(s):  
Svetlana Stepanova ◽  
Galina Simonova
Keyword(s):  
Heavy Metals ◽  
Water Purification ◽  
Natural Water ◽  
Lead Ions ◽  
Quantitative Estimates ◽  
Concentration Of Impurities

The method of water purification from lead ions using a natural water purifier – eichornia is considered. Quantitative estimates of changes in the concentration of impurities depending on the time of purification were carried out.

Assessment of environmental and radiological health hazards due to heavy metals and radionuclides contents in utility water reservoirs' sediments

2017 ◽  
Vol 8 (3) ◽  
pp. 235
Author(s):  
Omoniyi Matthew Isinkaye ◽  
James Ibitoye Agbi ◽  
Yinka Ajiboye ◽  
Romanus Ayoola Obasi
Keyword(s):  
Heavy Metals ◽  
Health Hazards ◽  
Water Reservoirs ◽  
Radiological Health

scholarly journals Designing Dual-Effect Nanohybrids for Removing Heavy Metals and Different Kinds of Anions from the Natural Water

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2524
Author(s):  
Osama Saber ◽  
Sarah Mousa Asiri ◽  
Mohamed Farouk Ezzeldin ◽  
Waleed I. M. El-Azab ◽  
Mohammed Abu-Abdeen
Keyword(s):  
Heavy Metals ◽  
Natural Water ◽  
Tap Water ◽  
Thermal Analyses ◽  
Three Dimensional ◽  
Nitrogen Adsorption ◽  
Building Blocks ◽  
Parameters Optimization ◽  
Dual Function ◽  
Cadmium And Lead

In the present study, well-designed nanohybrids are used to act as effective dual-function adsorbents for removing both anions and heavy metals from natural water, at the same time. In this trend, Zn-Al LDHs and graphene oxide are applied to build up building blocks to produce a series of nanohybrids. These nanohybrids were characterized by X-ray diffraction, thermal analyses, Fourier transform infrared spectroscopy, Raman spectroscopy, and scanning and transmission electron microscopy. These techniques confirmed that the prepared nanohybrids contained nanolayered structures with three–dimensional porous systems. These porous systems were identified by the nitrogen adsorption-desorption isotherms and water purification experiments. The obtained results indicated that these nanohybrids included suitable structures to act as dual function materials. The first function was achieved by removing more than 80% of both cadmium and lead from the natural water. The second function was accomplished by eliminating of 100% of hydrogen phosphate and bromide anions alongside with 80%–91% of sulfate, chloride, and fluoride anions. To conclude, these well-designed nanohybrids convert two-dimensional nanolayered structures to three-dimensional porous networks to work as dual-function materials for removing of heavy metals and different kinds of anions naturally found in the fresh tap water sample with no parameters optimization.

Simultaneous Determination of Trace Heavy Metals in Natural Water by Portable Metal Analyzer

2015 ◽  
Vol 1092-1093 ◽  
pp. 795-798
Author(s):  
Ying Hua Li ◽  
Lu Bai ◽  
Feng Gu ◽  
Hong Wang ◽  
Chun Ying Wu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Intermetallic Compound ◽  
Simultaneous Determination ◽  
Natural Water ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Trace Heavy Metals ◽  
Anodic Stripping ◽  
Water Based

The analysis index of the portable metal analyzer for trace heavy metals in natural water based on anodic stripping voltammetry (ASV) were performed. Simultaneous determination and monovariated analysis of trace heavy metals were investigated both subsequently. The reasons of disturbance in analysis were also discussed. The addition of Ga (II) was testified that can eliminate the formation of the Cu-Zn intermetallic compound.

Use of cambrian clay in cementing radioactive sludge deposits from natural water reservoirs

Atomic Energy ◽  
2010 ◽  
Vol 109 (2) ◽  
pp. 143-147
Author(s):  
M. S. Oleinik ◽  
V. N. Epimakhov ◽  
E. B. Pankina
Keyword(s):  
Natural Water ◽  
Water Reservoirs

Bistatic optoelectronic communication systems: Field experiments in artificial and natural water reservoirs

2017 ◽  
Vol 30 (4) ◽  
pp. 366-371 ◽  
Author(s):  
V. V. Belov ◽  
V. N. Abramochkin ◽  
Yu. V. Gridnev ◽  
A. N. Kudryavtsev ◽  
M. V. Tarasenkov ◽  
...  
Keyword(s):  
Natural Water ◽  
Communication Systems ◽  
Field Experiments ◽  
Water Reservoirs
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