have been widely used not only to assess hydrological processes, but also to address water quality issues, such as nitrogen pollution.
By the 1970s, many studies had been published on silicon isotope
composition of meteorites and lunar rocks, but not until 1996 have scientists interested themselves much in the four isotopes
of silicon on their home planet, where it is a major food source for plants, animals, and computers.
It imports isotope
technology and has the required authorisations for working with substances based on isotopes
, the press release noted.
12 July 2013 - US biomarker assays and tools company C2N Diagnostics said today it had inked a research and exclusive supplier deal with Cambridge Isotope
Laboratories Inc guaranteeing it future access to large quantities of highly enriched stable isotopes
at "predictable" prices.
Isoscape is a combination of the words "isotope
" and "landscapes," where isotopes
are atoms of an element that differ slightly in the number of subatomic particles called neutrons that they possess.
in ecology and environmental science, 2d ed.
Once an atom of hydrogen or one of its isotopes
binds to dust, the spectrometer at the heart of FUSE can no longer detect the element.
Each type of plant that an elephant eats--from grasses to trees--contains different isotopes
of elements, such as carbon and nitrogen.
With an understanding that it is only vegetation that releases these heavier water isotopes
into the atmosphere (through transpiration), while normal evaporation doesn't, the researchers were able to compare isotope
readings in the earlier nuclear monitoring programme data with isotope
recordings in rainfall made during 2000 and 2003 in the Amazon and Andes.
A third and final section, subtitled "Some Case Studies", first discusses the mobility of REE, Th and U during diagenesis and then illustrates the use of isotopes
to evaluate provenance and sedimentary processes and how sedimentary geochemistry can be used to constrain models for tectonic environments, paleoclimates and crustal evolution.
In: International Symposium on Isotopes
in Water Resources Management.
In this regard, measurements of light stable isotopes
in carbon dioxide, methane, and other atmospheric trace gases provide a unique means to better understand their sources, fates, and contributions in biogeochemical cycles.