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Quality of Surface water in Nicobar Islands, India

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Title Quality of Surface water in Nicobar Islands, India
Not Available
 
Creator T. P. Swarnam, A. Velmurugan, Tulsi Pawan Sai, Priyanka Srivastava, Rachel and S. Dam Roy
 
Subject Surface water
 
Description Not Available
Water is one of the most critical resource and constraint in an Island ecosystem where only rainfed
agriculture is prevalent. As the surface water sources play an important role in sustaining life in these
islands and a study was undertaken to ascertain the status of water quality for domestic and other
purpose in Nicobar Islands. The chemical composition of the surface water samples in the islands
showed not much variation. The EC values of the region varied from 250 to 860 μS cm-1 with mean
value of 497 μS cm-1. Among the dissolved ions, Ca2+ and Mg2+ predominates the cation
concentration with values ranging from 37 to 53 ppm and 13.2 to 30.3 ppm respectively and the
cation composition was in the order of Ca2+> Mg2+>Na+>K+ in all the samples tested. The pH of the
water samples across the islands varied from 7.4 to 7.9 with mean value of 7.6 with carbonates
mainly in the form of HCO3
-. The classification of water based on WHO(1993) and ISI (1991)
standards indicates that the water is fresh water type as the TDS is less than 500ppm. Only
temporary hardness caused by bicarbonate results classification of the water in moderately hard to
hard category.
Not Available
 
Date 2021-07-28T06:17:46Z
2021-07-28T06:17:46Z
2014-03-27
 
Type Book chapter
 
Identifier T. P. Swarnam, A. Velmurugan, Tulsi Pawan Sai, Priyanka Srivastava, Rachel and S. Dam Roy , March 2014
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/50499
 
Language English
 
Relation Not Available;
 
Publisher Not Available