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Field Chemistry Tests pH Dissolved Oxygen Conductivity Temperature

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 Tests pH Dissolved Oxygen Conductivity Temperature

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  1. Field ChemistryDeveloped 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.

  4. Measuring pH

  5. pH Testing Kit

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

  7. Interpreting pH Results

  8. Measuring Dissolved Oxygen

  9. Dissolved Oxygen Testing Kit

  10. 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Dissolved Oxygen Levels 0-4 mg/l = poor 4-7 mg/l = fair 7-10 mg/l = good 10-14 mg/l = excellent over 14 = ? (Check your test!)

  11. Interpreting Dissolved Oxygen Results

  12. Dissolved Oxygen Temperature

  13. Measuring Conductivity

  14. Conductivity Meter

  15. 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 Conductivity The higher the number, the poorer the quality. Oil and Gas Well Discharge Waste Water Impact Normal Stream Rain

  16. Conductivity Flow

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

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

  19. Estimate rainfall in your watershed in quarter inches for the last 24 hours. Use Weather Channel, local paper or Toad Gauge.

  20. Turbidity (0-3 point scale) Value Observation NTUs 0 Crystal Clear 0 NTUs 1 Clear 1-3 NTUs 2 Cloudy 4-12 NTUs 3 Muddy >12 NTUs

  21. 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

  22. 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

  23. 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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