USEPA (United States Environmental Protection Agency) method study 7. Analyses for trace elements in water by atomic absorption spectroscopy (direct aspiration) and colorimetry. Final report

摘要: The report describes a study of ten elements: aluminum, arsenic, cadmium, chromium, copper, iron, lead, manganese, selenium and zinc, at trace levels in water. Six sample concentrates, each containing the elements, were sealed glass ampuls, verified as homogeneous stable over time, provided to analysts with instructions for preparation analyses. Mean recovery, overall standard deviation, single-analyst deviations calculated element concentration two water types.