Validation for the Determination of Extractable Metals in Ashes from Biomass Incinerators by ICP-OES  

作　　者：Michaela Kroeppl Michaela Zeiner Chrlstof Lanzerstorfer 

机构地区：[1]University of Applied Sciences Upper Austria, Campus Wels, Stelzhamerstrafle 23, 4600 Wels, Austria [2]Hasenhutgasse 7/5/9, 1120, Vienna, Austria

出　　处：《Journal of Chemistry and Chemical Engineering》2011年第6期495-501,共7页化学与化工（英文版）

摘　　要：Biomass ashes contain valuable elements for plant growth, but also often high amounts of harmful heavy metals which limit their reuse in forests and on grassland. For monitoring metal concentrations, a fast and reliable method allowing the quantitative determination even at trace levels is mandatory. Therefore an analytical method consisting of an acidic microwave assisted digestion prior to ICP-OES measurement was optimized. The elements of interest were AI, As, B, Ba, Cd, Co, Cr, Cu, Fe, Mg, Mn, Na, Ni, Pb, Sb, St, Ti, V, and Zn. A validation including the following parameters was performed for each analyte： limit of detection, limit of quantification, recovery by spiking experiments, accuracy by analyzing a certified reference material, reproducibility （wihtin-24 hours, 4 and 7 days）, linearity, and uncertainty of measurement. Two standards series were used for calibration - one with 1 M HNO3 and one with additionally 2 g/L Mg（NOD2 to investigate the elimination or decrease of possible matrix effects. Both calibration methods showed very good recoveries. The method optimized allows the determination of the relevant elements covered by the recommendation of the Austrian ministry for agriculture and represents thus an appropriate tool for monitoring the metal contents in biomass ashes.

关 键 词：BIOMASS INCINERATION ASHES METALS ICP-OES method validation. 

分 类 号：X384[环境科学与工程—环境工程] TK6[动力工程及工程热物理—生物能]