Water pH and quality data taken by San Dieguito Rangers: 5.0 mg/L D.O for aquatic life to survive San Dieguito Lagoon 1) Urban Drool 4.23 mg/L D.O 7.3 pH Conductivity: 0
Air Temp: 21 °C Water Temp: 18-19 °C pH Procedure: 7 pH (A pH of 7 is neutral. A pH less than 7 is acidic, and a pH greater than 7 is basic) pH observation: As soon as the pH wide range testab was added and stirred into the water sample, it turned light green.
Salinity Procedure: Salinityis the saltiness or dissolved salt content of a body of water Salinity observation: The water sample turned foggy and lots of bacteria was floating around in a clearer way then it had been before the chloride testab had been added.
Dissolved Oxygen Procedure: (D.O) is is the amount of oxygen that is present in the water. It is measured in milligrams per liter (mg/L) Dissolved Oxygen observation: when the two D.O tablets dissolved in the water sample, they turned it light pink, and after 5 minutes it hadn't changed.
Testing for Nitrate: Nitrate is a nutrient needed by all aquatic plants and animals to grow. Dead plants, animals and their waste naturally release nitrate into the aquatic system Nitrate observation: when the nitrate was was put into the 5 mL of water it turned cloudy, and after 5 minutes it was a light purple.
Testing for Turbidity: Turbidity is the measure of the clarity of water. Turbid water is caused by suspended matter such as clay, silt, and microscopic organisms. Turbidity observation: as the water was tested, it turned light green. Turbidity: 11.8 NTU
I feel like I learned a lot about all the different parts of water, and how certain chemicals can affect that in negative and positive ways. I really enjoyed these projects, because they were fun and really educational, and they helped me learn about a lot of complicated sounding things in a simple way that I'll remember later on.