ABSTRACT
Most organic compounds may be best analyzed by GC/MS. Such GC/ MS or GC analysis, however, is preceded by either a “purge and trap” concentration step or a liquid or solid phase extraction step using a suitable organic solvent. e purge and trap method for aqueous samples is applicable for volatile substances that have lower solubility in water. A mass spectrometer should be used wherever possible to identify the compounds more correctly. Although it has a lower sensitivity than other GC detectors, mass spectrometry is, by far, the most con rmatory test for compound identi cation.
