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Field Chemistry

Field Chemistry. Developed by Ken Cooke Kentucky Division of Water Watershed Watch Program Coordinator Modified by Mike Kemp Professor of Environmental Engineering Technology Murray State University. Field Chemistry Tests. pH Dissolved oxygen Conductivity Temperature.

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Field Chemistry

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  1. Field Chemistry Developed by Ken CookeKentucky Division of WaterWatershed Watch Program CoordinatorModified by Mike KempProfessor of Environmental Engineering TechnologyMurray State University

  2. Field Chemistry Tests • pH • Dissolved oxygen • Conductivity • Temperature Some things are best done in person

  3. Field Chemistry Equipment • Testing kits • Alcohol or mineral spirit • Thermometers • Conductivity/TDS meters (calibrated) • pH meters calibrated with • 4-7-10 standard solutions Testing strips such as pH paper and “dip strips” are not as accurate 3 WEF_Field_Chemistry

  4. Measuring pH

  5. pH Testing Kit

  6. 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Basic or Alkaline Range pH–Good Between 6-9 Standard Units Acid Range

  7. Interpreting pH Results

  8. Measuring Dissolved Oxygen

  9. Range of Tolerance for Dissolved Oxygen in Fish

  10. Dissolved Oxygen Testing Kit

  11. Dissolved Oxygen Levels

  12. Interpreting Dissolved Oxygen Results

  13. Dissolved Oxygen Temperature

  14. Measuring Conductivity

  15. Conductivity Meter

  16. Conductivity

  17. Conductivity Flow

  18. Field Observations • Flow (0-5 point scale) • 24 hour rainfall (in inches) • Turbidity (0-3 point scale) Some things are best done in person

  19. Flow Observations 0 = Dry 1 = Ponded 2 = Low 3 = Normal 4 = Bank Full 5 = FLOOD! 0 = Dry 4 = Bank Full 5 = Flood! Get to know your creek 22 WEF_Field_Chemistry

  20. Channel Discharge

  21. Estimate Rainfall in Your Watershedin Quarter Inches for the Last 24 Hours Use Weather Channel, local paper or Toad Gauge

  22. Turbidity (0-3 Point Scale)

  23. Other Observations to Make • Putrescent or otherwise objectionable bottom deposits • Oil, scum, and floating debris in amounts that are unsightly • Nuisance levels of odor, color, other conditions

  24. Field Chemistry Check List • DO kit • pH kit • Thermometer • Spent chemical waste container • Conductivity meter and screwdriver • “Blue Book” of instructions • Recording forms • Pencil • First aid kit

  25. Equipment Use • There are hazardous chemicals in these kits! • DO test uses a strong alkali (like bleach) • pH test chemical is flammable • Read material safety data sheets for handling and disposal instructions • Use plastic spent chemical waste container at stream • Dispose of waste properly at home

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