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heavy water |
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heavy water: see deuterium deuterium (d tēr`ēəm), isotope of hydrogen with mass no. 2...... Click the link for more information. . heavy wateror deuterium oxideWater composed of two atoms of deuterium (D; a heavy isotope of hydrogen) and one atom of oxygen (O), chemical formula D2O. Water from most natural sources contains about 0.015% deuterium oxide; this can be enriched or purified by distillation, electrolysis, or chemical processing. Heavy water is used as a moderator in nuclear power plants, slowing down the fast neutrons so that they can react with the fuel in the reactor. Heavy water is also used in research as an isotopic tracer for chemical reactions and biochemical pathways. Water with tritium (T2O) rather than deuterium may also be called heavy water. heavy water water that has been electrolytically decomposed to enrich it in the deuterium isotope in the form HDO or D2O |
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| 5 -- 6 -- ran in SAC edition only) Above, traffic crawls along the southbound side of the Golden State Freeway due to lane closures because of damage to the roadway; at left, Bouquet Canyon Road near Vasquez Canyon Road remains unusable due to heavy water damage. Young girls walk several miles to the water station and carry heavy water containers on their backs up steep hills to bring it home. Many students carry unnecessary items such as heavy water bottles and CD players. |
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