Plasma impurities Subject

As liquid chromatography plays a dominant role in chemical separations, advancements in the field of LC-NMR and the availability of commercial LC-NMR instrumentation in several formats has contributed to the widespread acceptance of hyphenated NMR techniques. The different methods for sampling and data acquisition, as well as selected applications will be discussed in this section. LC-NMR has found a wide range of applications including structure elucidation of natural products, studies of drug metabolism, transformation of environmental contaminants, structure determination of pharmaceutical impurities, and analysis of biofiuids such as urine and blood plasma. Readers interested in an in-depth treatment of this topic are referred to the recent book on this subject [25]. 

Of particular interest is the mechanism of impurity transport in the Tokamak plasma. Classical transport theory predicts an accumulation of heavy impurities in the plasma core with an adequate outward flux of hydrogen. However, various processes, such as plasma turbulence, can have an opposite effect and this problem is still a subject of theoretical investigation49. ... 

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