EnviroInsite training workshop - geochemistry visualization tools
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Presentation used in EnviroInsite training workshop for description of geochemistry visualization tools such as the Piper, Stiff, Durov, and Schoeller Diagrams, scatter charts, and georeferenced Stiff Diagrams
EnviroInsite training workshop - geochemistry visualization tools
- 1. Geochemistry Tools EnviroInsite Training Workshop March 2013
- 2. What do we mean by geochemistry tools? • Specialized graphics for assessment of dominant aquatic ions • Useful in characterizing ground-water source areas • What are the dominant aquatic ions? Anions – HCO3, CO3, SO4, NO3, Cl, Fl Cations – Ca, Mg, Na, K, Fe EnviroInsite Training
- 3. What do we mean by geochemistry tools? • Concentrations plotted as milliequivalents per liter • Conc. in meq/L = Conc. in mg/L divided by equivalent weight • Equivalent weight – ion’s atomic weight divided by its valence Carbonate CO3 Molecular Weight 60 amu Valence -2 Equivalent Weight -30 amu Carbonate CO3 Concentration 1200 mg/L Concentration 4 milliequivalents/L EnviroInsite Training
- 4. Entering Data for Geochemistry Tools • Equivalent weight entered in the Constituents table • Anion equivalent weight entered as negative values Ion Equivalent Weight Cl -35.45 HCO3 -61.01 SO4 -48 Mg 12.15 Na 22.99 K 39.1 Ca 20 Fl -19 EnviroInsite Training
- 5. Conventional Stiff Diagram • Cations on left / Anions on Right • Plotted in concentration units of meq/L EnviroInsite Training