1. Using Digital Imaging to Assess Water Quality Presented by Amy Biddle Dave Reckhow

2. Using Digital Imaging to Assess Water Quality Natural organic matter … is removed by water leaches into water… treatment measures http://www.floridasbestwater.com Leaf Litter Soil Runoff Human Sources Filtration Coagulation Animal Sources

3. Experimental Overview Using Digital Imaging to Assess Water Quality Plant material is added to water sample Natural organic matter leaches over time Treatment Ideas: AlumAlum + Calcium carbonate Activated charcoal Filtration Water treatment strategies are applied

4. Experimental Overview Using Digital Imaging to Assess Water Quality Plant material is added to water sample Natural organic matter leaches over time Treatment Ideas AlumAlum + Calcium carbonate Activated charcoal Filtration Digital images used to track leaching process Water treatment strategies are applied Digital images used to track treatment progress

5. Using Digital Imaging to Assess Water Quality Images of light through water during leaching Time: 0 hours Data Collection

6. Using Digital Imaging to Assess Water Quality Images of light through water during leaching Time 0 hours: Leaves added Data Collection

7. Using Digital Imaging to Assess Water Quality Images of light through water during leaching Time: 20 hours Data Collection

8. Using Digital Imaging to Assess Water Quality Images of light through water during leaching Time: 43 hours Data Collection

9. Using Digital Imaging to Assess Water Quality Data Collection Images of light through water during leaching Time: 97 hours

10. Using Digital Imaging to Assess Water Quality Data Analysis Analyzing Digital Images Software How do patterns of RGB values change during leaching?

11. Using Digital Imaging to Assess Water Quality Data Analysis Analyzing Digital Images Software How do patterns of RGB values change during treatment?

12. Using Digital Imaging to Assess Water Quality Massachusetts Science and Engineering/Technology Curriculum Framework Biology Earth and Space Science Ecology Earth Processes and Cycles Inquiry Student designed experiments exploring… Factors influencing the leaching process: types of leaves, conditions, water properties Factors influencing the treatment process: comparison of different strategies