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...in water. (2) The total dissolved solids in water after all carbonates and organic matter have been oxidized. ...g out A procedure in which salt is added to a solution to cause an organic compound to precipitate so that it can be physically removed.

* reduction A chemical reaction where an element or compound gains electrons causing a decrease in valence. * refractory organics Organic substances that are dif.cult or unable to be metab­olized in a biological

* sandwich compound * semiconducting compound