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Deuterium-depleted water has a lower concentration of deuterium (2 H) than occurs in nature at sea level. [1] Deuterium is a naturally-occurring, stable (non-radioactive) isotope of hydrogen with a nucleus consisting of one proton and one neutron. The nucleus of normal hydrogen (protium, 1 H) consists of one proton only, and no neutron.
Deuterium-depleted water, water with less heavy water than in natural water. See also. ddw, ISO 639-3 code of the Dawera-Daweloor language of Indonesia
Semiheavy water is the result of replacing one of the protium in normal water with deuterium. [1] It exists whenever there is water with light hydrogen (protium, 1 H) and deuterium (D or 2 H) in the mix. This is because hydrogen atoms (1 H and 2 H) are rapidly exchanged between water molecules.
Water that contains deuterium is believed to stick to dust more easily than regular water. When ice is released into the part of the atmosphere surrounding the nucleus, known as the coma, it could ...
For water, the condensed phase is more enriched while the vapor is more depleted. For example, rain condensing from a cloud, is heavier than the vapor starting point. Generally, the large variations in deuterium concentration in water are from fractionations between liquid, vapor, and solid reservoirs.
Thus, deuterium accounts for about 0.0156% by number (0.0312% by mass) of all hydrogen in the ocean: 4.85 × 10 13 tonnes of deuterium – mainly as HOD (or 1 HO 2 H or 1 H 2 HO) and only rarely as D 2 O (or 2 H 2 O) (Deuterium Oxide, also known as Heavy Water)– in 1.4 × 10 18 tonnes of water.
NASA satellites have measured a large gain in California water supplies, but groundwater in the Central Valley remains severely depleted after years of drought.
The Global Meteoric Water Line (GMWL) describes the global annual average relationship between hydrogen and oxygen isotope (oxygen-18 [18 O] and deuterium [2 H]) ratios in natural meteoric waters. The GMWL was first developed in 1961 by Harmon Craig , and has subsequently been widely used to track water masses in environmental geochemistry and ...