National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The concentration of four eco-toxic heavy metals such as Hg, Pb, Cu, and Zn have been analysed from two sampling sites of Ujani backwaters for three seasons by atomic absorption spectrometer. The concentrations of these heavy metals have been found to be 0.0025±0.005, 0.029±0.056, 1.58±0.313, 4.39±1.17 & 0.00240±0.005, 0.047±0.067, 2.043±0.309, 6.09±1.281 respectively. These values are found to be slightly above the permissible limit of drinking water quality standards. The data has been used for the calculation of Heavy-metal Pollution Index (HPI) and Metal Index (MI). The mean HPI values of ground water in Site-I and Site-II are 244.45 and 229.93 respectively. The results indicated that mean HPI values were found to be above the critical pollution index value of 100. The mean MI values of ground water at Site-I & Site-II are 6.047 and 6.147 respectively. These results of MI indicate the strong heavy metal pollution at both sites. Same metals were analysed from sediments of same sites. Average values found are 0.033±0.009, 0.17±0.077, 19.45±4.64, 17.48±2.8 & 0.036±0.005, 0.225±0.06, 20.77±4.82, 21.01±5.33 respectively. Physicochemical parameters like temperature, pH, total hardness, & dissolved oxygen were also evaluated for two years. Average values of these parameters for site-I & site-II were 26.7°C, 8.00, 318.71mg/L, 4.63mg/L & 26.59°C, 7.9, 357.7mg/L, 4.12mg/L respectively.
Citations |
 |
 |
 |
 |
