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Heavy water (II)

Heavy water (II)

  • Categories:Technology
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  • Time of issue:2022-05-18

(Summary description)Heavy water and deuterium are valuable tracer materials in the study of chemical and physiological changes. For example, if trees are irrigated with dilute heavy water, it can be measured that water can run more than ten meters to tens of meters per hour in these plants. The deuterium content in urine of people who have drunk a lot of dilute heavy water is determined.

Heavy water (II)

(Summary description)Heavy water and deuterium are valuable tracer materials in the study of chemical and physiological changes. For example, if trees are irrigated with dilute heavy water, it can be measured that water can run more than ten meters to tens of meters per hour in these plants. The deuterium content in urine of people who have drunk a lot of dilute heavy water is determined.

  • Categories:Technology
  • Time of issue:2022-05-18
  • Views:
Information

Heavy water (II)

Heavy water and deuterium are valuable tracer materials in the study of chemical and physiological changes. For example, if trees are irrigated with dilute heavy water, it can be measured that water can run more than ten meters to tens of meters per hour in these plants. The deuterium content in urine of people who have drunk a lot of dilute heavy water is determined. It is known that the average residence time of water molecules in the human body is 14 days. Using deuterium instead of ordinary hydrogen can study the digestion and metabolism of animals and plants. Concentrated or pure heavy water cannot maintain the life of animals and plants, and the lethal concentration of heavy water to general animals and plants is 60%. When using NMR analysis, if the solvent is water and the research object is hydrogen, heavy water can be used as the solvent.

The special value of heavy water is reflected in the application of atomic energy technology. In order to manufacture powerful nuclear weapons, heavy water needs to be used as a moderator in nuclear fission reactions. Some nuclear reactors use heavy water to slow down neutrons, giving them a chance to react with uranium. Light water can also be used as a moderator. However, because light water can absorb neutrons, enriched uranium must be used in light water reactors instead of ordinary uranium, otherwise it will not reach critical mass. Heavy water reactors can not only use ordinary uranium, but also convert uranium-238 into plutonium that can be used to make nuclear bombs. India, Pakistan, Israel and North Korea all make nuclear fuel in this way. In order to prevent the proliferation of nuclear weapons, the production and sale of heavy water are restricted in many countries. China successfully exploded its first hydrogen bomb on june17,1967, boosting the aspirations of the Chinese people. What is more important is that heavy hydrogen can release huge energy during nuclear fusion reaction without polluting the environment. It has been calculated that if heavy hydrogen in seawater is used for thermonuclear reaction power generation, its total energy is equivalent to that all the oceans are turned into oil.

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