Microwave digestion of sediment, soils and urban particulate matter for trace metal analysis.
作者： V Sandroni
DOI: 10.1016/S0039-9140(03)00131-0
关键词:
摘要: A microwave digestion technique was developed to determine the content of nine heavy metals in sediments and soils. The digests were subsequently analysed by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). determined Ca, Mg, Fe, Mn, Zn, Cr, Cd, Cu, Pb V. achieved using an acid mixture HNO(3), HF distilled H(2)O. experimental study conducted four standard reference materials (SRMs): sewage sludge (LGC6136), marine sediment (PACS-1), urban particulate matter (NIST 1648) coal carbonisation site soil (LGC6138). Two different programs examined which optimal for real environmental samples. accuracy precision two analysis SRMs compared. From results obtained, program providing a maximum power 650 W cycle time 51 min resulted best analytical performance. obtained good agreement with certified values demonstrated that proposed method is precise accurate.
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