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  2. Freshwater environmental quality parameters - Wikipedia

    en.wikipedia.org/wiki/Freshwater_environmental...

    The toxicity of ammonia is dependent on both pH and temperature and an added complexity is the buffering effect of the blood/water interface across the gill membrane which masks any additional toxicity over about pH 8.0. The management of river chemistry to avoid ecological damage is particularly difficult in the case of ammonia as a wide range ...

  3. Pourbaix diagram - Wikipedia

    en.wikipedia.org/wiki/Pourbaix_diagram

    Pourbaix diagram of iron. [1] The Y axis corresponds to voltage potential. In electrochemistry, and more generally in solution chemistry, a Pourbaix diagram, also known as a potential/pH diagram, E H –pH diagram or a pE/pH diagram, is a plot of possible thermodynamically stable phases (i.e., at chemical equilibrium) of an aqueous electrochemical system.

  4. Gran plot - Wikipedia

    en.wikipedia.org/wiki/Gran_plot

    If a pH electrode is not well calibrated, an offset correction can be computed in situ from the acid-side Gran slope: For a titration of acid by base, the acid-side slope ( − [ O H − ] 0 10 b 0 {\displaystyle -[OH^{-}]_{0^{}}10^{b_{0}}} ) can serve to compute b 0 {\displaystyle b_{0^{}}} using a known value of [ O H − ] 0 {\displaystyle ...

  5. Oklahoma Department of Environmental Quality - Wikipedia

    en.wikipedia.org/wiki/Oklahoma_Department_of...

    The Oklahoma Department of Environmental Quality (DEQ) is a department of the government of Oklahoma under the Governor of Oklahoma. It is responsible for protecting human health and for safeguarding the natural environment: air, water, and land. DEQ is chiefly responsible for the environmental policy of Oklahoma.

  6. pH - Wikipedia

    en.wikipedia.org/wiki/PH

    The pH range is commonly given as zero to 14, but a pH value can be less than 0 for very concentrated strong acids or greater than 14 for very concentrated strong bases. [2] The pH scale is traceable to a set of standard solutions whose pH is established by international agreement. [3]

  7. List of botanical gardens and arboretums in Oklahoma

    en.wikipedia.org/wiki/List_of_botanical_gardens...

    This list of botanical gardens and arboretums in Oklahoma is intended to include all significant botanical gardens and arboretums in the U.S. state of Oklahoma [1] [2] [3] Name Image

  8. List of lakes of Oklahoma - Wikipedia

    en.wikipedia.org/wiki/List_of_lakes_of_Oklahoma

    The following is a list of lakes in Oklahoma located entirely (or partially, as in the case of Lake Texoma) in the state. Swimming, fishing, and/or boating are permitted in some of these lakes, but not all. Oklahoma has more than 200 lakes created by dams. All lakes listed are man-made. Oklahoma's only natural lakes are oxbow and playa lakes ...

  9. Global meteoric water line - Wikipedia

    en.wikipedia.org/wiki/Global_meteoric_water_line

    The Global Meteoric Water Line (GMWL) describes the global annual average relationship between hydrogen and oxygen isotope (oxygen-18 [18 O] and deuterium [2 H]) ratios in natural meteoric waters. The GMWL was first developed in 1961 by Harmon Craig , and has subsequently been widely used to track water masses in environmental geochemistry and ...