Papers by Nohar Singh Dahariya
Silver Nanomaterials for Agri-Food Applications, 2021
This chapter describes the unique electronic and optical characteristics of AgNPs, which are empl... more This chapter describes the unique electronic and optical characteristics of AgNPs, which are employed as a chemical sensor for selective and sensitive determination of toxic chemical substances present in the environmental samples. Several toxic metal ions (mercury, arsenic, lead, cadmium, and chromium) and pesticides (chlorinated, phosphorus, and nitrogen-containing) present in several environmental samples affect the public health of human beings. Thus, different methods are used for the synthesis of AgNPs, which is stabilized by different capping agents for the detection of a variety of target substances from real samples. Moreover, the principle involved for chemical sensing such as calorimetrically, fluorescence, electrochemical, and surface-enhanced Raman spectroscopy is discussed for selective determination of metal ions and pesticides using AgNPs as a chemical sensor. The advantages of using AgNPs as a chemical sensor are simple, rapid, economic, and sensitive for monitoring...
Journal of Hazardous Materials
Journal of Hazardous, Toxic, and Radioactive Waste
The groundwater of the the Bemetara district of Chhattisgarh in central India over a large area i... more The groundwater of the the Bemetara district of Chhattisgarh in central India over a large area is hard in nature due to its high mineral content. An elevated concentration of Na þ , Mg 2þ , Ca 2þ , and SO 2− 4 in the groundwater has been observed, falling within the ranges (n ¼ 16)
Journal of Environmental Protection, 2016
In India, several (>50) vegetables are widely used as food due to their high nutrition values. Ho... more In India, several (>50) vegetables are widely used as food due to their high nutrition values. However, vegetables in industrial area are getting contaminated with heavy metals by disturbing biological and biochemical processes in the human body. In present study, the risk of human health by heavy metals (Fe, As, Cr, Mn, Cu, Zn, Pb, Cd and Hg) through the intake of common vegetables i.e. Solanum lycopersicum, Solanum melongena, Amaranthus tricolor L., Chenopodium album L., Spinacia oleracea and Coriandrum sativum obtained from the largest coal burning basin, Korba, India is described. The concentration of Fe, As, Cr, Mn, Cu, Zn, Cd, Pb and Hg in the soils (n = 6) was ranged from 18,
Journal of Environmental Protection, 2016
The electrical conductivity, alkalinity, salinity, hardness and chemical load of the groundwater ... more The electrical conductivity, alkalinity, salinity, hardness and chemical load of the groundwater in urban area of the country are increased enormously due to excessive urban stresses by making water unsafe for drinking purposes. Therefore, the groundwater quality of Raipur city, capital of Chhattisgarh state, India has been investigated. The physico-chemical characteristic of the groundwater along with the chemical loading variations is described. Various indices were used for rating of groundwater quality for drinking and irrigation purposes. The cluster and factor analysis models were used for source apportion of the contaminants.
Atmospheric and Climate Sciences, 2016
The road dusts (RD) are fugitive in nature causing potential health hazards to people living in h... more The road dusts (RD) are fugitive in nature causing potential health hazards to people living in highways. They are generated from different sources on the roads and being a valuable archive of environmental information. In the present work, contamination assessment of 18 heavy metals and ions in road dusts of the country are described. Techniques i.e. ion selective, ion chromatography and atomic absorption spectrophotometers were used for analysis of the ions and metals.
Applied Water Science, 2015
The groundwater of Ambagarh Chouki, Rajnandgaon, India, shows elevated levels of As and F-, frequ... more The groundwater of Ambagarh Chouki, Rajnandgaon, India, shows elevated levels of As and F-, frequently above the WHO guidelines. In this work, the concentrations of As, F-, Na ? , Mg 2? , Ca 2? , Cl-, SO 4 2-, HCO 3-, Fe, dissolved organic carbon (DOC) and dissolved inorganic carbon (DIC) in the groundwater of Ambagarh Chouki are described. The sources of dissolved components in the groundwater are investigated using the cluster and factor analysis. Five factors have been identified and linked to processes responsible for the formation of groundwater chemistry. High concentrations of dissolved As seems to be linked to high concentrations of DOC, suggesting reductive dissolution of ferric oxyhydroxides as arsenic mobilization process. Fluoride is found in shallow depth water, presumably as a consequence of evaporation of water and removal of Ca 2? by precipitation of carbonates.
American Journal of Plant Sciences, 2015
Two major issues, i.e. large crop productions and huge anthropogenic activities (e.g. fuel burnin... more Two major issues, i.e. large crop productions and huge anthropogenic activities (e.g. fuel burning and mineral roasting) disturb the micronutrient balance in the soil of India. In this work, the available and total status of eight micronutrients i.e. Fe, Mn, Cu, Zn, Co, Ni, Mo, and S of the soils in the most urbanized area: Raipur area, Chhattisgarh, India (extending over ≈ 2 × 10 4 km 2) is described. The available status of micronutrients i.e. Fe, Mn, Cu, Zn, Co, Ni, Mo and 2 4 SO − in the soils (n = 100) was ranged from 30-8253, 205-2800, 2.0-8.1, 0.7-5.0, 2.2-31.2, 0.1-13.4, 0.1-8.9 and 41-747 mg/kg with mean value of (at 95% probability) 642 ± 186, 1178 ± 119, 4.3 ± 0.3, 2.3 ± 0.2, 12.8 ± 1.3, 3.9 ± 0.6, 1.5 ± 0.3 and 281 ± 25 mg/kg, respectively. The concentration variations, deficiencies and toxicities of the micronutrients in the soil are discussed.
Journal of Environmental Protection, 2016
The stagnant water reservoirs in urban area of India are severely contaminated with surfactant an... more The stagnant water reservoirs in urban area of India are severely contaminated with surfactant and microbe due to anthropogenic activities. In this work, water quality of pond water of the most industrialized city: Raipur, CG, India is described. The concentration of surfactant in the term of sodium lauryl sulfate (SLS) in water (n = 16) is ranged from 7.0-27 mg/L with mean value of 17 ± 3 mg/L. All ponds are found to be contaminated with microbes i.e. bacteria, algae and fungi at elevated levels. The physico-chemical characteristics of the pond water are discussed.
Journal of Water Resource and Protection, 2015
The basic bed rocks of central India are contaminated with fluorite minerals. The overuse of grou... more The basic bed rocks of central India are contaminated with fluorite minerals. The overuse of groundwater for irrigation causes increased mineralization of F − in the groundwater. This contaminated groundwater is widely used for drinking and other household purposes. The excess F − is excreted through urine of animals. In this work, the exposure of contaminated groundwater in domestic animals of Dongargarh city, Chhattisgarh, India is studied. The symptoms of fluorosis diseases in the domestic animals i.e. cattle and buffalo are surveyed. The quality and sources of the contaminants of the groundwater are discussed.
American Journal of Analytical Chemistry, 2015
Raipur is a fast growing city in central India due to being commercial centre for the steel, ceme... more Raipur is a fast growing city in central India due to being commercial centre for the steel, cement and forest products of the country. Large quantity (≈300 million lit/day) of untreated sewage waste water is discharged into seven reservoirs located in the city. Sewage carries excessive nutrients, heavy metals, organics, bacteria, yeast and fungi by leaking contents into the drinking water which cause acute health problems, ranging from common diarrhoea to deadly diseases such as hepatitis, cholera, typhoid fever, etc. Therefore, in this work, the microbial and chemical contamination of sewage waste of Raipur city, Chhattisgarh, India is described.
American Journal of Analytical Chemistry, 2015
The study of heavy metal (HMs) contamination of environment is of great interest due to their ser... more The study of heavy metal (HMs) contamination of environment is of great interest due to their serious health hazard. In this work, the contamination of tree leaves with the HMs in the most polluted industrial city, Korba, India is described. The leaves of common trees i.e. Azadirachta indica, Butea monosperma, Eucalyptus, Ficus religiosa, Mangifera indica and Tectona grandis were selected for assessment of the HMs contamination as bioindicator. The elevated concentration of HMs (i.e. As, Fe, Cr, Mn, Cu, Zn, Cd, Pb and Hg) in the tree leaves was observed, ranging from 2.
Journal of Environmental Protection, 2015
At least 15% of 0.1 million people residing in 117 villages of Tamnar block (Chhattisgarh, centra... more At least 15% of 0.1 million people residing in 117 villages of Tamnar block (Chhattisgarh, central India) are suffering from fluorosis diseases. In this work, the contamination of F − in the environment (i.e. water, soil, rock and urine) of the Tamnar block is described. The concentration variations of F − , Cl − , − 3 NO , − 2 4 SO , Na + , K + , Mg 2+ , Ca 2+ , Al, Mn, Fe and Zn in the groundwater are reported. The F − content in the water was ranged from 1.7-17 mg/L with mean value of 9.0 ± 3.7 mg/L. Fluoride was enriched up to 3-, 54-, 69-and 244-folds in the urine, soil, dust and rock, respectively. The cluster and factor analysis models were used to apportion sources of F − and other elements in the water.
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Papers by Nohar Singh Dahariya