Determination of trace metals in sediment standard reference materials by graphite-furnace atomic absorption spectrometry with a stabilized temperature platform

✍ Scribed by M. Bettinelli; N. Pastorelli; U. Baroni

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 530 KB
• Volume: 185
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(86)80038-1

✦ Synopsis

Trace elements (As, Be, Cd, Co, Cr, Cu, Mn, MO, Ni, Pb, V, Zn) in NBS 1645 (river sediment), NBS 1646 (estuarine sediment), MESS-l and BCSS-1 (marine sediments), IAEA SL-1 (Lake Sediment) and IAEA Soil-5, are determined by graphite furnace atomic absorption spectrometry with the L'vov platform. The samples (ca. 0.25 g) are dissolved in a mixture of nitric, perchloric and hydrofluoric acids in a PTFE bomb. Results based on direct calibration with simple aqueous solutions are in good agreement with those obtained by the method of standard additions and with recommended values. The relative standard deviations are generally 5-10%.

Chromium determinations are also evaluated by inductively-coupled plasma/atomic emission spectrometry.