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Geochemistry of Rare Earth Elements in Sediment of Central India

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Journal of Environmental Protection 2016年第5期7卷 705-714页

作者： Bharat Lal Sahu keshaw prakash rajhans Shobhana Ramteke Khageshwar Singh Patel Irena Wysocka Irena Jaron School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India Polish Geological Institute Warsaw Poland

The rare earth elements (REE) are of great interests due to wide industrial applications. In the present work, geochemistry of REE in the contaminated pond sediment of Ambagarh Chowki, cen-tral India is described. The concentration (n = 24) of La, Ce, Pr, Nd, Eu, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th and U was ranged from 16 - 119, 41 - 163, 4.1 - 28, 16 - 99, 0.7 - 2.7, 3.2 - 18, 2.7 - 16, 0.4 - 2.3, 2.2 - 13, 0.4 - 2.4, 1.1 - 6.1, 0.2 - 0.8, 0.9 - 4.8, 0.13 - 0.70, 6 - 25 and 0.46 - 1.86 mg/kg with mean value of 42 ± 9, 89 ± 13, 9.4 ± 1.9, 34 ± 7, 1.2 ± 0.2, 6.3 ± 1.2, 5.4 ± 1.0, 0.8 ± 0.1, 4.2 ± 0.8, 0.8 ± 0.2, 2.0 ± 0.4, 0.3 ± 0.1, 1.6 ± 0.3, 0.24 ± 0.04, 11 ± 2 and 1.14 ± 0.13 mg/kg, respectively. The concen-tration ratio of ∑LREE/∑HREE, La/Y and Th/U are discussed. The spatial distribution and sources of the REE are described.

关键词： Rare Earth Element Sediment Geochemistry Sources

Exposure of Fluoride in Coal Basin

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International Journal of Clean Coal and Energy 2016年第1期5卷 1-12页

作者： Khageshwar Singh Patel Ankit Yadav keshaw prakash rajhans Shobhana Ramteke Reetu Sharma Irena Wysocka Irena Jaron School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India Polish Geological Institute Rakowiecka Warsaw Poland

Coal is a dirty fuel contaminated with F- and other elements. Several million tons of coal are burnt in Korba basin, central India to generate electricity with pouring fluorine and other elements into the environment. The water is contaminated with F- and other chemicals beyond the permissible limits. The contaminated water is consumed by the human and animals by excreting the balanced toxicants through the stool and urine. Several folds higher concentration of F- in urine (44 mg/L) and stool (266 mg/kg) samples of the cattle are observed. The prevalence of fluorosis diseases in cattle of the Korba basin is reported.

关键词： Coal Fluoride Contamination Toxicity

Silica Particulate Pollution in Central India

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Journal of Environmental Protection 2016年第2期7卷 170-175页

作者： Khageshwar Singh Patel Sapana Gupta Shobhana Ramteke keshaw prakash rajhans S. Nava F. Lucarelli School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India Department of Physics University of Florence and INFN via Sansone Florence Italy

Asbestos exposure is known to cause asbestosis i.e. lung cancer (mesothelioma) with increased risk of diseases i.e. gastrointestinal, colorectal, throat, kidney, esophageal, and gallbladder cancer. Therefore, in the present work, the concentration of SiO2 associated to the coarse and fine particulates in the ambient air of most industrialized area of central India i.e. Raipur city (capital of Chhattisgarh state) is described. The concentration of SiO2 in ambient air associated to the PM10 and PM2.5 was ranged from 6.6 to 102 and 0.2 to 15 μg/m3 with mean value of 30.0 ± 6.0 and 4.3 ± 0.8 μg/m3, respectively. The seasonal, spatial and temporal variations of SiO2 in the air are described.

关键词： Ambient Air Particulate Matter Silica Trace Elements

Fluoride Contamination of Groundwater and Health Hazard in Central India

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Journal of Water Resource and Protection 2015年第17期7卷 1416-1428页

作者： Nohar Singh Dahariya keshaw prakash rajhans Ankit Yadav Shobhana Ramteke Bharat Lal Sahu Khageshwar Singh Patel School of Studies in Chemistry/Environmental Science Pt Ravishankar Shukla University Raipur India

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.

关键词： Exposure Fluoride Fluorosis Groundwater

Assessment of Groundwater Quality in Central India

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Journal of Water Resource and Protection 2016年第1期8卷 12-19页

作者： Shabya Choudhary Shobhana Ramteke keshaw prakash rajhans Pravin Kumar Sahu Suryakant Chakradhari Khageshwar Singh Patel Laurent Matini School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India Department of Exact Sciences E.N.S. Marien Ngouabi University Brazzaville Congo

The groundwater is widely used for irrigation of rice crops. The overuse of groundwater causes depletion of the water quality (i.e. enormous increase in conductivity, hardness and ion and metal contents, etc.) in several regions of the country and world. In this work, the quality of the groundwater in the densestrice cropping area, Saraipali, Chhattisgarh, Central India is discussed. The water is sodic in nature with extremely high electrical conductivity. The mean concentration (n = 30) of F-, Cl-, NO3-, SO42-, NH4+, Na+, K+, Mg2+, Ca2+ and Fe in the water was 1.2 ± 0.2, 98 ± 31, 46 ± 15, 56 ± 9, 19 ± 4, 206 ± 25, 9.2 ± 2.3, 39 ± 6, 114 ± 19 and 1.7 ± 0.6 mg/L, respectively. The sources of the contaminants are apportioned by using the factor analysis model. The suitability of the groundwater for the drinking and irrigation purposes is assessed.

关键词： Groundwater Indices Sources

Pit Lake Water Quality of Central India

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Journal of Geographic Information System 2016年第1期8卷 28-39页

作者： Shobhana Ramteke Vintee Verma Suryakant Chakradhari Pravin Kumar Sahu Bharat Lal Sahu keshaw prakash rajhans Ankit Yadav Khageshwar Singh Patel School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India

Several pit lakes exist in the Raipur area due to lime stone mining. The water of pit lakes is used for bathing, washing and irrigation purposes. They are found to be contaminated with toxicants i.e. fluoride, surfactants and microbes far above the recommended limits. In this work, the water quality of 29 pit lakes locates in two districts: Raipur and Baloda Bazar, Chhattisgarh, India are assessed for drinking and irrigation purposes.

关键词： Pit Lake Water Quality Fluoride Surfactant Microbe

Fluoride Contamination of Groundwater and Skeleton Fluorosis in Central India

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Journal of Environmental Protection 2016年第6期7卷 784-792页

作者： Ankit Yadav Yaman Kumar Sahu keshaw prakash rajhans Pravin Kumar Sahu Suryakant Chakradhari Bharat Lal Sahu Shobhana Ramteke Khageshwar Singh Patel School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India

In country like India, the groundwater is widely used for drinking purposes. In central India, the groundwater is hard and contaminated with F- and other elements above the permissible limits and found to be linked with prevalence of the fluorosis diseases. In this work, the groundwater quality Balod district, Chhattisgarh, India is investigated for assessment of water quality for drinking purposes. The concentration (n = 50) of F- was ranged from 1.5 - 14.0 mg/L with mean value of 3.9 ± 0.8 mg/L. The causes of prevalence of skeleton fluorosis in human of the studied area are described.

关键词： Ground Water Quality Fluoride Skeleton Fluorosis

Urban Pond Water Contamination in India

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Journal of Environmental Protection 2016年第1期7卷 52-59页

作者： Ankit Yadav Pravin Kumar Sahu Suryakant Chakradhari keshaw prakash rajhans Shobhana Ramteke Nohar Singh Dahariya Gaurav Agnihotri Khageshwar Singh Patel School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India

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.

关键词： Surfactant Water Quality Microbe Pond

Sewage Pollution in Central India

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American Journal of Analytical Chemistry 2015年第10期6卷 787-796页

作者： Khageshwar Singh Patel Nohar Singh Dahariya Suryakant Chakradhari Pravin Kumar Sahu keshaw prakash rajhans Shobhana Ramteke Lesia Lata Huber Milosh School of Studies in Chemistry/Environmental Science Pt. Ravishankar Shukla University Raipur India Department of Soil Science/Geology Maria Curie-Sklodowska University Lublin Poland

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.

关键词： Nutrients Heavy Metals Microbes Toxicities