Livro online Livro Synthesis And Applications Of Isotopically Labelle – Heys, J. R. – ISBN: 0471978639 para você comprar em loja virtual. Confira preço, ofertas e descontos.
All chemical elements have isotopes. An isotope is one of two or more forms of an element which has different atomic mass and different nuclear, but not chemical properties. This means that they can be used to label molecules without altering their chemical properties. Stable isotopes are generally identified and quantitated by mass spectrometry or NMR techniques but many isotopes are, however, unstable and undergo radioactive decay. Radiation can be detected by a number of techniques.