Article: Development of a water quality index (WQI) for the Loktak Lake in India
Appl Water Sci. 2017 Oct., v. 7, no. 6
2017
Abstract: The present work was carried out to assess a water quality index (WQI) of the Loktak Lake, an important wetland which has been under pressure due to the increasing anthropogenic activities. Physicochemical parameters like temperature (Tem), potential ... ...
| Abstract | The present work was carried out to assess a water quality index (WQI) of the Loktak Lake, an important wetland which has been under pressure due to the increasing anthropogenic activities. Physicochemical parameters like temperature (Tem), potential hydrogen (pH), electrical conductivity (EC), turbidity (T), dissolved oxygen (DO), total hardness (TH), calcium (Ca), chloride (Cl), fluoride (F), sulphate ([Formula: see text]), magnesium (Mg), phosphate ([Formula: see text]), sodium (Na), potassium (K), nitrite (NOâ), nitrate (NOâ), total dissolved solids (TDS), total carbon (TC), biochemical oxygen demand (BOD), and chemical oxygen demand (COD) were analyzed using standard procedures. The values obtained were compared with the guidelines for drinking purpose suggested by the World Health Organization and Bureau of Indian Standard. The result shows the higher concentration of nitrite in all the location which is beyond the permissible limit. Eleven parameters were selected to derive the WQI for the estimation of water potential for five sampling sites. A relative weight was assigned to each parameter range from 1.46 to 4.09 based on its importance. The WQI values range from 64 to 77 indicating that the Loktak Lake water is not fit for drinking, including both human and animals, even though the people living inside the Lake are using it for drinking purposes. The implementation of WQI is necessary for proper management of the Loktak Lake and it will be a very helpful tool for the public and decision makers to evaluate the water quality of the Loktak Lake for sustainable management. |
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| Keywords | anthropogenic activities ; biochemical oxygen demand ; calcium ; carbon ; chemical oxygen demand ; chlorides ; decision making ; drinking ; electrical conductivity ; fluorides ; guidelines ; humans ; hydrogen ; lakes ; magnesium ; nitrates ; nitrites ; nitrogen dioxide ; oxygen ; people ; pH ; phosphates ; potassium ; sodium ; sulfates ; temperature ; total dissolved solids ; turbidity ; water hardness ; water potential ; wetlands ; World Health Organization ; India |
| Language | English |
| Dates of publication | 2017-10 |
| Size | p. 2907-2918. |
| Publishing place | Springer Berlin Heidelberg |
| Document type | Article |
| ZDB-ID | 2594789-8 |
| ISSN | 2190-5495 ; 2190-5487 |
| ISSN (online) | 2190-5495 |
| ISSN | 2190-5487 |
| DOI | 10.1007/s13201-017-0579-4 |
| Database | NAL-Catalogue (AGRICOLA) |
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