当前世界环境

In the present investigation (from march 2004 – February 2005), a fish pond was selected at University of Jammu, Jammu to study the physico-chemical properties of water for the assessment of its quality. The physico-chemical factors such as temperature, pH, free carbon dioxide, Dissolved oxygen (DO), Calcium (Ca++), Magnesium (Mg++), Carbonate (CO32-), Bicarbonate (HCO3-) and Chloride were investigated. Temperature fluctuated from 11oC to 28oC, pH from 7.7 to 9, DO from 7.2 mg/l to 14 mg/l, Cl- from 15.97 mg/l to 49.9 mg/l, CO3" from 30 mg/l to 597.7 mg/l, Ca++ from 12.03 to 28.06 mg/l, Mg++ from 6.86 mg/l to 19.37 mg/l and free carbon dioxide remained absent through out the study period.