Introduction During lab on Monday, April 9, 2002 our class conducted a lab on water chemistry and pollution. The two bodies of water that were choose as samples where, the Wall pond and the HGTC pond. Each group had to test the water for Temperature, Dissolved Oxygen, Nitrate, Phosphate, pH, and Turbidity. Only two people where chosen to test the waters for Coliform bacteria. “Coliform bacteria are not pathogenic (disease causing) organisms, and are only mildly infectious.
For this reason these bacteria are relatively safe to work with in the laboratory.” (Wilkes, 2001) This experiment is closely related to the study of science because it is a direct study of the environment. “The World Heath Organization estimates that 80 percent of all sickness and disease is lee-developed countries can be attributed to waterborne infectious agents and inadequate sanitation.” (Environmental Science, 2002) Everything that lives needs to drink water and if all the world’s water is polluted then something needs to be done. The following summary will display how the lab executed and the results of each body of water. Materials and Methods During the water quality lab experiment there were many items needed to complete the process.
The group was given the Wall pond as their testing subject. To complete the process we used the La Motte Water Monitoring Kit, which included: 1 large white canister containing all the test materials, 3 tall square-sided 10 mL test tubes with plastic press-on caps, 1 small glass test tubes with black screw-on caps, at least 1 large round glass test tube with black screw-on caps, containing a tablet inside the tube (not in every kit because not all groups will be performing this experiment), 1 plastic color chart for comparison of sample results (ph-coli form-turbidity-DO-nitrate-phosphate), foil packets of test tablets for various tests (labels are found on the packets), 1 sec chi disk sticker affixed to inside of canister, 2 thermometer strips, one high (normal) range and one low range, instructional sheets, and the La Motte mini-booklet for tables and other information. Temperature was the first thing that the group tested. First put the High Range thermometer about 4 to 5 inches below the water for one minute. After the one- minute time frame had elapsed the thermometer was removed and the temperature was recorded.
The Essay on Water Purification
There are many reasons why we need to treat our water, and there are also many different ways we can treat our water. Water is very important to our survival. Regulations are set so that our water is healthy for us to drink. Without those regulations there could be things in our water to cause us to be sick. Some problems in parts of the country are heavy metals. One of the best ways to see if you ...
Next the group tested the wall pond for dissolved oxygen. First a small glass was submerged underwater to collect the water sample. Next two Dissolved Oxygen Tes Tab where dropped into the test tube. After that screw the cap on the tube, make check to make sure there are no air bubbles present. Next invert the tube for a time limit of 4 minutes until the tablets and disintegrated. After a five minute time period as elapsed a color should start to develop, compare the color sample to the dissolved oxygen color chart and record the data.
After the dissolved oxygen data was recorded, the group tested the Wall pond for Nitrate. First, fill the square-sided test tube with 5 mL of the water sample. Next add one Nitrate WR CRA Tes Tab. Next, put the cap on the test tube and invert until the tablets have disintegrated. After the five-minute time-period has passed, wait for the red color to develop, compare the color of the sample to the Nitrate color chart, and record the results as ppm Nitrate. Next the group studied the wall pond for Phosphate.
The Essay on Test Tube Water Thermometer Wire
Question: What is the solubility curve of KNO 3 Prediction: Draw a sketch to show the shape of the curve you expect for the solubility of a typical solid dissolving in water at different temperatures. Plot solubility on the y-axis and temperature on the x-axis. Materials: Large test tube Balance Stirring wire Two-hole stopper to fit the test tube, with a thermometer inserted into one hole 400 mL ...
First fill the tall square-sided with 10 mL of the water sample. Next, add one Phosphorus Tes Tab. Next, screw the cap on the test-tub and invert until the tablet has disintegrated, and after five minutes a blue color should start to develop. Lastly, compare the color to the sample to the Phosphate color chart and record the results has ppm Phosphate. Next the wall pond was tested for pH. First fill the square-sided test tube with 10 mL of the water sample.
Next add one pH tablet. Then screw the cap on the test tube and invert until the tablet has dissolved. After the tablet as disintegrated compare the color of the sample to the pH color chart, and record as pH. Lastly, the group tested the water for Turbidity. The lab instructor did steps 1 and 2 before class begin, so the group continued on with steps 3 and 4. First, fill the white container jar to the turbidity fill line.
Next, hold the Turbidity Chart (right edge) to the top edge of the jar. Looking downward into the jar, compare the appearance of the sec chi disk icon in the jar to the chart, and record the Turbidity in JU. Results HGTC Monday 2: 30 6: 00 Tuesday 11: 30 2: 30 6: 00 Wednesday 2: 30 6: 00 Thursday 11: 30 2: 30 Temperature -HGTC 23. 3 23 24 24 25 24 26 20 18 D. O. % Sat.
– HGTC 62. 6 64. 4 48 83. 3 54.
6 48 31 44 60 Nitrate 0 0 0 0 0 0 0 0 0 Phosphate – HGTC 1. 3 1. 5 2 2 1 1. 3 1 2 2.
3 PH – HGTC 8. 5 8 8 8 8 8. 5 8 8 8 Turbidity 26. 7 0 20 0 40 0 0 40 13. 3 Bacteria + + + + + + + + +Control -Tap Water Temp 17. 5 D.
O% Sat. 62. 5 Nitrate 1. 5 Phosphate 2 PH 8 Turbidity 0 Bacteria -Wall Monday 2: 30 6: 00 Tuesday 11: 30 2: 30 6: 00 Wednesday 2: 30 6: 00 Thursday 11: 30 2: 30 Temperature -Wal 1 24 20 26 28 26 25. 3 24 22 30 D. O.
% Sat. – Wall 51 88 49 63. 8 99 80 63 80. 5 58 Nitrate 0 0 0 0 0 0 0 0 0 Phosphate – Wall 0.
3 1 2 1 0 1. 3 1. 25 1. 33 0. 75 PH – Wall 9 9 9 8. 5 9 8.
3 8. 5 9 8. 5 Turbidity 41. 7 0 0 14 40 13.
3 20 40 26. 7 Bacteria + + + + + + + + +These results are from a time period of a 4-day time period. Each class did their experiments the same way, and with the help of the La Motte Water Monitoring Kit; there was little room for error. Discussion The above graphs displayed the results for each of the following test; temperature, dissolved oxygen, nitrate, phosphate, turbidity, and bacteria.
The Essay on Water Pollution 16
Water Pollution People keep on throwing trash and industrial wastes into our clean water. If this continues, the quality of our water will deteriorate, and without it everything dies, including us. Water pollution is destroying our world, but fortunately we can count on special treatments for this kind of problem. What is water pollution? "It is the contamination of water by foreign matter such as ...
Each of these pollutants were tested exactly the same to get the most accurate results possible. This experiment can be very helpful to a lot of individuals in the real world. How many times have you been swimming in a lake or pond, not knowing what kind of bacteria lies within? With these testing kit you can test the water for some type of pollutants before you dive it, that way you know what you are getting yourself into. During the test there was little room for error considering that you had the La Motte Water Monitoring Kit that basically displayed all the materials, charts, and directions out for you. Although some error could have occurred it was very unlikely to happen.
Each test was done at the same time of day because the water goes through a process everyday. This will be different result given at the 2: 30 class than the 6: 00 class. This was done so that all the data can be as accurate as possible. Although the experiment was easy, there was still a little room for error, for example; the amount of water in the test tubes could have been measured wrong, the Tes Tabs may have not completely dissolved, and the time limit may have varied. Some of the pollutants tested were typical in a polluted stream such as, coli form bacteria, pH, and turbidity. These pollutants are less likely to be found in an unpolluted stream; tap water.
Most of the pollutants tested were very important such as nitrates and phosphates, too much of these pollutants could damage both plants and people. “Excessive levels of nitrate in drinking water have caused serious illness and sometimes death.” (Suburban Water Testing Lab, 2001) This lab experiment was very enlightening, I always though of pollution being concrete or at least something that I could see or smell, but as this experiment has shown there are many pollutants that can’t be touched or smelled, and they are still just as important as the one that are concrete. “Water usually dissolves all these completely. And almost always looking, tasting or smelling can’t detect them.
The only way to know in most case is reviewing the results of a water test.” (AAA Water Testing, 1999-2001) Works CitiedCunningham, Mary Ann – William P. 2002. Principles of Environmental Science: 1221 Avenue of the Americans, New York, NY 10020. McGraw-Hill.
The Term Paper on Human Judgement Experiment Attribution Error
The age old saying People are what they do has long been ingrained in the psyche of every individual in every culture. It is even stated in the Bible, regarded by many as the book of truth, that every man should be seen in the light of his actions. In other words good people only do good deeds, while evil people only perform evil deeds. However, the world in which we live in is not that clear cut. ...
Pg. 244. 4-21-02 Website web.
