The Effect of Silver Nanoparticles on the Heartbeat of Daphnia magna
School Name
Spring Valley High School
Grade Level
10th Grade
Presentation Topic
Environmental Science
Presentation Type
Non-Mentored
Abstract
Silver nanoparticles are an antibacterial agent. Sometimes when these items are thrown away improperly they leak out into the environment and contaminate the lakes and ponds, and the creatures that live in them. In each container of items like lotions or toothpaste, there are shown to be approximately 90 to 130 milligrams of silver nanoparticles. If researchers can find out how much silver nanoparticles the Daphnia can tolerate, then they could help to reduce the amounts being used until they are at a safe quantity. It was hypothesized that as the Daphnia were introduced to increased amounts of silver nanoparticles, their heartbeats would increase as they would be in distress until they died. To test this theory, 5 different containers of spring water with 30-40 Daphnia magna were added to each container. The silver nanoparticles were left in the Daphnia containers overnight and the heartbeat was tested in the morning. The four IV containers were introduced to 90 mg, 100 mg, 115 mg, and 130 mg respectively. According to the ANOVA, the results were statistically significant: F(4,145) = 22.29. The mean and the median of each set of independent variables decreased as they went on. The means being an average of 175.53 BPM for the control, 139.70 BPM when introduced to 90 mg of silver nanoparticles, 130.93 BPM when introduced to 100mg of silver nanoparticles, 97.00 BPM for 115 mg, and 94.3 BPM for 130 mg of silver nanoparticles. This shows that as the Daphnia magna were introduced to a greater amount of silver nanoparticles, their heartbeats decreased as they got closer to death.
Recommended Citation
Maddipati, Sreya, "The Effect of Silver Nanoparticles on the Heartbeat of Daphnia magna" (2020). South Carolina Junior Academy of Science. 166.
https://scholarexchange.furman.edu/scjas/2020/all/166
Location
Furman Hall 227
Start Date
3-28-2020 9:15 AM
Presentation Format
Oral and Written
Group Project
No
The Effect of Silver Nanoparticles on the Heartbeat of Daphnia magna
Furman Hall 227
Silver nanoparticles are an antibacterial agent. Sometimes when these items are thrown away improperly they leak out into the environment and contaminate the lakes and ponds, and the creatures that live in them. In each container of items like lotions or toothpaste, there are shown to be approximately 90 to 130 milligrams of silver nanoparticles. If researchers can find out how much silver nanoparticles the Daphnia can tolerate, then they could help to reduce the amounts being used until they are at a safe quantity. It was hypothesized that as the Daphnia were introduced to increased amounts of silver nanoparticles, their heartbeats would increase as they would be in distress until they died. To test this theory, 5 different containers of spring water with 30-40 Daphnia magna were added to each container. The silver nanoparticles were left in the Daphnia containers overnight and the heartbeat was tested in the morning. The four IV containers were introduced to 90 mg, 100 mg, 115 mg, and 130 mg respectively. According to the ANOVA, the results were statistically significant: F(4,145) = 22.29. The mean and the median of each set of independent variables decreased as they went on. The means being an average of 175.53 BPM for the control, 139.70 BPM when introduced to 90 mg of silver nanoparticles, 130.93 BPM when introduced to 100mg of silver nanoparticles, 97.00 BPM for 115 mg, and 94.3 BPM for 130 mg of silver nanoparticles. This shows that as the Daphnia magna were introduced to a greater amount of silver nanoparticles, their heartbeats decreased as they got closer to death.
