Abstract
The paper showcases studies conducted in order to determine the existence of nitrate ions in the drinking water (fountain water) of a common household from the village of Dumbravita, Maramures County, Romania, as well as to determine the Romplumb S.A. wastewater ammonium ion. A Hanna Instruments photo colorimeter for boilers and cooling cannons was used in order to determine the nitrate ions concentration, which is a compact and versatile measuring device that can measure absorption and pH/mV, as well as a HR Hanna Nitrite photometer. Determining the ammonium ion was possible with the help of a multi parameter photo colorimeter, which employs the CAL Check function. In order to determine de nitrate ions concentration in the water samples, a photo colorimeter which employs the "Method selection"," Zero", "Read" and "Timers" functions was used. Using the "Nitrite LR" method, the device displays de nitrite-nitrogen (NO2--N) concentration measured in gg/l, and by accessing the secondary functions using the Chem Frm key, the result can be converted in gg/l of nitrite (NO2-) and sodium nitrate (NaNO2).
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