“…The reader is directed to some recent verifying that the system of controls (sample receipt, handling, relevant reviews in the areas of NAA and environmental storage, security, chain-of-custody, document control, stanmaterials,10,11 AMS in environmental geoscience,12 applidards, traceability, calibration protocols, method validation, cations of synchrotron X-ray sources13 and speciation by data review/assessment/rejection and reporting) is being effec-EXAFS.14 Some typical characteristics of the 'core' analytical tively used. Tutorial treatment of these aspects can be found techniques that comprise the focus of this discussion are in the excellent reviews by Uriano,5 Mesley et al 6 and Taylor summarized in Table 2. With the exceptions of LIBS and and Stanley.7 LEAFS, currently all are widely utilized in environmental A cursory examination of current literature8 reveals that studies but presently no single technique appears to be capable environmental analyses are primarily driven by three major of addressing all analytical needs.…”