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  2. Winkler titration - Wikipedia

    en.wikipedia.org/wiki/Winkler_titration

    1 mole of O 2 → 2 moles of MnO(OH) 2 → 2 mole of I 2 → 4 mole of S 2 O 2− 3. Therefore, after determining the number of moles of iodine produced, we can work out the number of moles of oxygen molecules present in the original water sample. The oxygen content is usually presented in milligrams per liter (mg/L).

  3. Chemical oxygen demand - Wikipedia

    en.wikipedia.org/wiki/Chemical_oxygen_demand

    It is commonly expressed in mass of oxygen consumed over volume of solution, which in SI units is milligrams per liter (mg/L). A COD test can be used to quickly quantify the amount of organics in water. The most common application of COD is in quantifying the amount of oxidizable pollutants found in surface water (e.g. lakes and rivers) or ...

  4. Streeter–Phelps equation - Wikipedia

    en.wikipedia.org/wiki/Streeter–Phelps_equation

    The Streeter–Phelps equation is used in the study of water pollution as a water quality modelling tool. The model describes how dissolved oxygen (DO) decreases in a river or stream along a certain distance by degradation of biochemical oxygen demand (BOD).

  5. Karl Fischer titration - Wikipedia

    en.wikipedia.org/wiki/Karl_Fischer_titration

    One mole of I 2 is consumed for each mole of H 2 O. In other words, 2 moles of electrons are consumed per mole of water. 2 I − → I 2 + 2 e − B·I 2 + B·SO 2 + B + H 2 O → 2 BH + I − + BSO 3 BSO 3 + ROH → BHRSO 4. The end point is detected most commonly by a bipotentiometric titration method. A second pair of Pt electrodes is ...

  6. Wastewater quality indicators - Wikipedia

    en.wikipedia.org/wiki/Wastewater_quality_indicators

    Nonpoint source pollution can be contrasted with point source pollution, where discharges occur to a body of water at a single location. The nonpoint sources of phosphates include natural decomposition of rocks and minerals, stormwater runoff , agricultural pollution , erosion and sedimentation , atmospheric deposition , and direct input by ...

  7. Rangers forward Matt Rempe suspended for eight games for ...

    www.aol.com/rangers-forward-matt-rempe-suspended...

    New York Rangers forward Matt Rempe was suspended for eight games by NHL’s Department of Player Safety on Sunday for boarding and elbowing Dallas Stars defenseman Miro Heiskanen on Friday night.

  8. Acid neutralizing capacity - Wikipedia

    en.wikipedia.org/wiki/Acid_neutralizing_capacity

    Acid-neutralizing capacity or ANC in short is a measure for the overall buffering capacity against acidification of a solution, e.g. surface water or soil water.. ANC is defined as the difference between cations of strong bases and anions of strong acids (see below), or dynamically as the amount of acid needed to change the pH value from the sample's value to a chosen different value. [1]

  9. Savings interest rates today: Reset your savings goals with ...

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    1.37% Down 2 basis points Pulling back on average rate updates over the past year shows minimal movement for traditional savings accounts with bigger movement on short- and long-term CDs.

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