ASSESSMENT OF WATER QUALITY INDEX (WQI) IN KEERAT SAGAR POND AT MAHOBA DISTRICT OF UTTAR PRADESH, INDIA

1. Department of Zoology, DVC College, Orai, Jalaun U.P.285001, 2. Department of Zoology, Bipin Bihari P.G. College, Bundelkhand University, Jhansi 284002 U.P. 3. Department of Zoology, Bundelkhand University, Jhansi284128, U.P ...................................................................................................................... Manuscript Info Abstract ......................... ........................................................................ Manuscript History


573
Sample Collection:-Water samples were collected from the pond during December 2002 to November 2003 in every month with the help of water sampling Polythene bottle. Some parameters tested at the time of samples collection while others were carried out in departmental laboratory for Physico-chemical estimation.
Sites Every region of the pond (inlet, outlet, bank area and middle region) were selected for sample collection. Experimental Analysis:-Various Physico-chemical parameters were analyzed by using standard method described by Trivedi and Goyal (1986), Kodarkar (1992), APHA (2005) and Jain & Jain (2007). Water Temperature:-water samples were analyzed with the help of mercury thermometer. Turbidity: Turbidity was recorded by Systronics Nephloturbidity meter and expressed as NTU. pH:-It was measured at the site by BDH narrow range pH strips by compared it with the color disk.
Carbonate and Bicarbonate:-Bicarbonate. 0.02 N (N/50), sulphuric acid standard 0.02 N (N/50) Na 2 CO 3 and phenopthlene alkalinity regents were used in for carbonate estimation. Phenopthlene alkalinity mg/l = num of ml of 0.02 N H 2 SO 4 Used X 10 Bicarbonate alkalinity was determined by procedure (Vide supra) with methyl orange as indicator. Bicarbonate alkalinity mg/l= No of ml 0.02 N H 2 SO 4 used X 10 Dissolved Oxygen (DO):-Dissolved oxygen was estimated by Winkler's method using alsterberg azide modification.
Carbon di-oxide:-Estimated at the sampling site. N/44 NaOH, 4 gm of AR quality NaOH dissolved in 1 L of distilled water, which give 0.1 N NaoH. Standardized this solution with 0.1 Na2SO4 using phenolphthalein indicator. 100 ml of this solution is diluting to 440 ml gives N/44 NaOH.

Discussion and Result:-
Physical Parameters:-Water Temperature:-It is the one of the most essential factor for influence the aquatic life. It was ranged from 14.6 to 32.5 o C (Table-A, Graph-1). Minimum and maximum temperatures were recorded in the month of January and June respectively. Similar records were also recorded by Anand et al (2014). Higher water temperature in summer is due to the low water level and low temperature in January is due to the water cycle.
Turbidity It was ranged from 15.20 to 69.25 NTU (Table-A, Graph-1). The higher value of turbidity was observed during monsoon period due to high wind velocity and silting respectively while the lower value of turbidity was recorded in January due to lack of silt and low wind velocity. A similar trend of fluctuation was also observed by Shimpi,B. et al (2011).  (Table-A, Graph-1). The lower value of pH was recorded in rainy season (August) which was due to the increase water volume that bring change in level of carbonate while higher pH was showed in the month of winter (January). pH shows positive correlation with total alkalinity. A similar confirmatory result was also observed by Nanda and Tiwari (1999). According to Boyd and pillai (1984) better fish production could be possible in pond water with pH range 6.5 to 9.0.

Chloride:-
The value of chloride ranged from 10 to 43.50 ppm (Table B, Graph 2). Lower value of chloride was recorded in rainy season (August-September) while higher value was recorded in summer season (May). The chloride level depends upon the level of water bodies. Swarnalatha and Narsingrao (1998) also reported similar trend.