Techniques of Compositional Analysis

This section will be devoted to the discussion of how techniques of widespread use in analytical chemistry for the determination of compositions have been applied to the study of EEls. The formation of ionized particles or molecules is conunon to all 

The specifics of tools that have demonstrated value for the characterization of phenomena at EEIs are discussed below. The main difference among them lies on the method of analyte extraction, which has implications on how representative the final results are of the situation in vivo. These parameters should be carefully considered when designing an analytical experiment. 

---