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Dissolved Oxygen : Chemistry Theory
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Foil Packets #1 and #2To start the Dissolved Oxygen (DO) Test, the reagents from the two foil packets are added into the river sample. This step combines manganese (II) sulfate from DO Packet #1 with lithium hydroxide base contained in DO Packet #2. Manganese (II) hydroxide is temporarily produced along with lithium sulfate.
Dissolved oxygen in the river water then reacts immediately with the manganese (II) hydroxide to produce an orange manganese (II) oxide floc that gradually settles to the bottom of the sample bottle.
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Copyright © 2010, The RiverWatch Institute of Alberta. All rights reserved. |
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