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natural abundance

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natural abundance

[′nach·rəl ə′bən·dəns]
(nucleonics)
The abundance ratio of an isotope in a naturally occurring terrestrial sample of an element.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive
Llorente M, Glaser B, Turrion MB (2010) Anthropogenic disturbance of natural forest vegetation on calcareous soils alters soil organic matter composition and natural abundance of [sup.13]C and [sup.15]N in density fractions.
Elsewhere in the Middle East, Jordan has nine projects predominantly in the water sector worth US$6.1 billion set to begin construction in 2012, while Morocco looks to make the most of its natural abundance of wind resources, earmarking US$3.8 billion worth of renewable energy projects over the next two years.
Perhaps this natural abundance explains why Fijians, despite their relative poverty, radiate a rare and solid warmth and greet visitors with a highspirited "Bula" (hello) like long-lost members of one large extended family.
The contributors of these 14 articles have taken this situation to heart and updated their articles to be sure natural abundance isotopes and ways of interpreting patterns are up-to-date.
Clearly, the concentration of Sb in bottled water is effectively independent of the natural abundance, but dependent on the duration of storage in the PET container.
But zinc's natural abundance in the prostate of healthy men, and its performance in our tests, suggest it may be an important natural defense."
The objectives of this study were to (i) quantitatively assess the changes in soil organic C down to 1 m depth, (ii) determine light fraction C to assess changes in soil organic matter quality, and (iii) derive turnover rate and time of mulga-derived C in soil under pasture using [[delta].sup.13]C natural abundance of soil organic matter.
Variation in the natural abundance of 15N in the halophyte, Salicornia virginica, associated with groundwater subsidies of nitrogen in a southern California salt marsh.
This reinforces the earlier conclusion [25], based on the fact that the natural abundance is very rare and by recipes found in ancient Egyptian texts, that the laurionite had been prepared synthetically, as was phosgenite, ([Pb.sub.2][Cl.sub.2][CO.sub.3]), another ingredient found in some powders.
Kashipur was gifted with natural abundance. Starvation does not belong here.
The use of natural abundance of nitrogen isotopes in plant physiology and ecology.
Soil in parts of the western United States has a natural abundance of selenium, an important nutrient for animals and humans that in high doses is toxic.
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