Testing For Dissolved Oxyge

Another test that was performed was for Dissolved Oxygen, or D.O.. When testing for D.O., measures how much oxygen is in the water that is broken down throughout the water molecules. The fish and other organisms living in the water need dissolved oxygen to survive, except for plants, because plants produce the oxygen in the environment. The dissolved oxygen varies inversely to the temperature of the water. If the dissolved oxygen is low, the water will be too warm and many organisms living in the water will suffocate due to the lack of dissolved oxygen. This also explains why the temperature of the water is also very important to the wellbeing of the ecosystem and the organisms living within it. The Chagrin River had a D.O. measurement of 10 ppm. …show more content…
amount of 14.6 to 8.2, depending on temperature and pressure. This is right in the middle of the average, however it could have also been lower in some areas if the sample was taken at or near a pool. Since the pool’s water is stagnant, this affect the sample of water because there are fewer photosynthetic organisms and the flow of water tends to have less organisms in one place that take up as much oxygen as those organisms in the pools. However, this sample was taken in a lotic part of the river, as opposed to the pool, causing the D.O. to be higher. The pH of certain substances can vary from 0, the most acidic measure of pH, to 14, the most