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Chamling, Meelan
- High fluoride in groundwater and fluorosis related health hazard in Rarh Bengal, India: a socio-environmental study
Abstract Views :186 |
PDF Views:75
Authors
Biswajit Bera
1,
Sumana Bhattacharjee
2,
Meelan Chamling
1,
Arijit Ghosh
1,
Nairita Sengutpa
3,
Supriya Ghosh
1
Affiliations
1 Department of Geography, Sidho-Kanho-Birsha University, Purulia 723 104, IN
2 Department of Geography, Jogesh Chandra Chaudhuri College (Calcutta University), Kolkata 700 033, IN
3 Department of Geography, Diamond Harbour Women’s University, Sarisha 743 368, IN
1 Department of Geography, Sidho-Kanho-Birsha University, Purulia 723 104, IN
2 Department of Geography, Jogesh Chandra Chaudhuri College (Calcutta University), Kolkata 700 033, IN
3 Department of Geography, Diamond Harbour Women’s University, Sarisha 743 368, IN
Source
Current Science, Vol 120, No 7 (2021), Pagination: 1225-1233Abstract
More than 600,000 people in the three districts in Rarh Bengal, namely Purulia, Bankura and Birbhum live in fluoride endemic area where dental, skeletal and non-skeletal fluorosis is wide spread. Rarh Bengal is in an extended part of Chotanagpur Plateau in Eastern India. Fluoride content in 727 water samples of drinking water and petrography of 34 rock chip samples from these districts have been studied to understand fluoride in the drinking water. About 1753 households (in 410 villages) were surveyed using stratified random and quota sampling techniques to assess the number of people affected by fluorosis. Fluoride risk analysis was performed by applying the standard fluoride hazard index and fluoride vulnerability index. Results showed that granite gneiss and pegmatite are responsible for release of fluoride ions into the soils and groundwater. About 118 villages in 14 blocks of Purulia, 15 villages in 7 blocks in Bankura and 9 villages in 5 blocks in Birbhum are found to be affected by severe fluorosis.Keywords
Fluoride, Hazard, Host Rocks, Rarh Bengal, Risk, Vulnerability.Full Text
References
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- Relationship between diameter and depth of potholes controlled by lithology and structure in the Rarh region of India
Abstract Views :171 |
PDF Views:99
Authors
Biswajit Bera
1,
Sumana Bhattacharjee
2,
Meelan Chamling
1,
Arijit Ghosh
1,
Nairita Sengutpa
3,
Supriya Ghosh
1
Affiliations
1 Department of Geography, Sidho-Kanho-Birsha University, Purulia 723 104, IN
2 Department of Geography, Jogesh Chandra Chaudhuri College, University of Calcutta, Kolkata 700 033, IN
3 Department of Geography, Diamond Harbour Women’s University, Sarisha 743 368, IN
1 Department of Geography, Sidho-Kanho-Birsha University, Purulia 723 104, IN
2 Department of Geography, Jogesh Chandra Chaudhuri College, University of Calcutta, Kolkata 700 033, IN
3 Department of Geography, Diamond Harbour Women’s University, Sarisha 743 368, IN
Source
Current Science, Vol 121, No 5 (2021), Pagination: 697-703Abstract
A total of 263 riverbed potholes were studied at five sites with Precambrian Chhota Nagpur granitic-gneiss, tonalite gneiss and sandstone under Permo-Carboniferous age of Gondwana rocks. Fluvio-hydrological, geospatial and statistical techniques were used to determine the diameter – depth dynamics on lithology with structural diversity of the Rarh region of peninsular India. The diameter–depth relationship is required for site-specific regional projects such as excavation, channel-bed dredging and dam construction, specially in the stability analysis of environmental and hydraulic engineering projects. The result shows positive correlation between diameter and depth of different sites such as circular, oval and elongated sculpted forms. Lithology and multidimensional structural elements accelerate the growth and enlargement of potholes on various riverbeds of the Rarh region of India.Keywords
Diameter–depth relationship, lithology, potholes, riverbed, structural diversity.Full Text
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