Investigation of physicochemical parameters and toxic effects of metals in drinking water of Quaid-E-Abad, Karachi

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Research Paper 01/06/2021
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Investigation of physicochemical parameters and toxic effects of metals in drinking water of Quaid-E-Abad, Karachi

Naila Begum Noonari, Mushtaque Ali Jakhrani, Hafizullah Mazari, Sanaullah Ansari, Safeullah Bullo, Shahid Ali Jakhrani, Sahrish Memon, Amjad Hussain Soomro, Khalid Ahmed Bhutto, Ashfaque Ahmed Jakhrani
Int. J. Biosci.18( 6), 273-277, June 2021.
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Abstract

The aims of present study were to evaluate the physicochemical parameters such as pH, electric conductance (EC), total dissolved solids (TDS), Chlorides, carbonates and level of toxic elements such as Arsenic, Chromium, Cadmium and lead in Drinking water of Quaid-e-Abad Karachi, Sindh by using different techniques. Literature review indicates that in the study area such types of analysis has not been conducted by any organization in past. Therefore 100 drinking water samples were collected from 10 Union Councils of Quaid-e-Abad, Karachi during period of 2017 followed by GPS system. For analysis of Toxic elements such as Cd, Cr, Pb and As the samples were pre-concentrated with 2N HNO3 & 35% H2O2 and were kept below <40C prior to analysis. Results of present study indicates that pH, Total Dissolved Solid, Chlorides and carbonates concentration were found slightly high in few samples as compared to WHO permissible limits. While values of Electrical Conductance, level of Cadmium, Chromium, and Lead were found within the recommended guideline of WHO. Arsenic is highly toxic and human carcinogenic element which was fortunately not found in any drinking water sample of Quaid-e-Abad, Karachi. For taking some measurements regarding lowering the level of pH, TDS, Chloride and carbonates in drinking water of Quaid-e-Abad, Karachi the water could be made good for drinking purposes to the human population.

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