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Animas River and the Gold King Mine - Adam Robinson, CHMA.161 - Coggle…

- - - - Often Result From
      - Such as
        
        Pb
        
        As
        
        Cd
        
        Tl
        
        Hg
        
        Cr
        
        Ag
        
        Cu
  - - - Expensive, Complicated Laboratory Techniques
        
        What's the Alternative?
        
        In Situ Detection
        
        Electrochemical Detection
        
        Cost Effective
        
        Simple
        
        Reliable (Good Detection Limit)
        
        Detection Based on
        
        Oxidation Potential of Each Metal
        
        Enhance Detection Limit By
        
        Use varying electrochemical sensors
        
        Pair with other electrochemical techniques
        
        Detection Limits are Important Becuase
        
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        Example of Electrochemical Detection of Hg2+ - Source 1
        
        Graph D Shows Detection Limit
        
        1 more item...
        
        Better Because
        
        More accurate since it is directly in the environment
        
        No lag time between sampling and lab testing
        
        Accounts for full water chemistry and pertinent reactions
- - - - Donates H+
    - - Donates OH-
  - - - Accepts Electrons
        
        Most Accurate Representation
    - - Donates Electrons
  - - - Makes H+
    - - Makes OH-
  - - - Can Lead To
  - - - Can Lead To
        
        Acid Mine Drainage
        
        Lowers pH of Water Bodies
        
        Creates Uninhabitable Conditions
        
        Increases Solubility of Heavy Metals
        
        Acidic Spill
        
        Amplified Presence of Heavy Metals in Water
        
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        Water Reacts with Sulfur and Heavy Metals
        
        Sulfuric Acid
        
        Produces Acidic Conditions
        
        Increases Toxicity
        
        Alters Chemical Equilibira
        
        Alter Ecosystem Balance
        
        Runs off into Water Bodies
        
        Can Affect Ionic Atmosphere
- - - - 0 - 7 is Acidic
      - 7 - 14 is Basic
        
        Decreases Heavy Metal Content in Leachate
      - 7 is Neutral
- - - - Three million gallons of orange, contaminated waste water leaked from the source and contaminated the area
        
        Orange Tone due to Acidic Conditions and Iron Content in Water
        
        pH, Detection Limits, and Acid Concepts at the Forefront
        
        Oxidation and Substitution Reactions