CHANGES IN SAMPLE COLLECTION AND ANALYTICAL TECHNIQUES AND EFFECTS ON RETROSPECTIVE COMPARABILITY OF LOW-LEVEL CONCENTRATIONS OF TRACE ELEMENTS IN GROUND WATER
Ground water sampling techniques were modified to reduce random low-level contamination during collection of filtered water samples for the determination of trace-element concentrations. Use of inductively coupled plasma-mass spectrometry analysis for 18 elements.
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| Cote DDD: | 67/17895 |