INTERNATIONAL RESEARCH JOURNAL OF SCIENCE AND ENGINEERING

44-46

Authors: Deshpande RP

The Lonar Crater is situated in Buldhana District of Maharashtra State India. It is a circular depression formed due to impact of a huge meteorite with high velosity. It contains a shallow saline lake occupying most of its floor. Part of its floor being flooded by fresh water carried through constant flow of water of unknown origin. Physico-Chemical Parameters of Lonar Crater lake were studied monthly at four sampling stations, two each of fresh & saline water in the year 2012. Salinity & high alkalinity are dominating parameters observed. The physico-chemical parame-ters of saline & fresh water Hydrobiological study include - temperature, PH, dissolved 02, dissolved CO2, alkalinity, chlorides, salinity, detection of sodium, potassium & Iron. The result of the analysis of saline water is compared with the findings of the earlier workers & shown in the tabular form. The unique findings of the Lonar crater lake includes constant PH range between 9.5 to 10.00, total absence offree CO2, and high contents of chlorides and salinity throughout the year. During the study period slight variations were recorded in the values of temperature, 02, carbonate & bicarbonate alkalinity.

51-54

Authors: Tamlurkar HL

Water is an important natural resource for all kinds of life and environment bur over the last few decades the water quality has been deteriorated due to its over exploitation. In rural as well as in urban areas ground water is the major source for drinking purpose. Ground water is gift of nature and about 94% of the drinking water is available from ground water. A number of chemical compounds are found in ground water and one of them is nitrate. Drinking water contaminated by nitrate is more commonly associated with some form of pollution made by human activities. Nitrates are very soluble in water and more easily through soil. Over time nitrate can accumulate in ground water that may then use for drinking purpose. When nitrogenous waste in soil or in water is decomposed by microbial action then nitrate is formed. Vegetable matter, human waste discharge and animal slurries are natural source of nitrate. A review is studied in the present paper that focuses on concentration of nitrate in drinking water. The aim of the paper is to study the review on the effect of the nitrate contaminated water on human being.