This European Standard specifies three methods of digestion for solid recovered fuels: a) microwave assisted digestion with hydrofluoric, nitric and hydrochloric acid mixture; b) hot water bath digestion of with hydrofluoric, nitric and hydrochloric acid mixture, after ashing of the SRFs sample; c) oven digestion with nitric, perchloric and hydrofluoric acid mixture. Instrumental determination of Si, Al, K, Na, Ca, Mg, Fe, P, and Ti is performed by Inductively Coupled Plasma Spectrometry with optical detection or other suitable spectroscopic techniques such as Flame Atomic Spectroscopy. The effectiveness of the digestion can be verified by qualitative X-ray fluorescence (XRF) analysis on the remaining residue. If necessary, an alternative digestion method (among those proposed) shall be used. XRF can be used for the analysis of Si, Al, K, Na, Ca, Mg, Fe, P, Ti, after ashing (550 ℃) of the sample: other elements can be analysed by XRF provided that the concentration levels are above the instrumental detection limits of the XRF instrumentation and after proper preliminary testing. Method a) is recommended for general use, but the amount of the test portion can be very low in case of high concentration of organic matter. Method b) is recommended for SRFs with high organic matter concentration that can be difficult to digest with the other methods. Method c) is recommended for SRFs samples for which the other methods leave a significant insoluble residue. All the listed methods are suitable for the determination of Si, provided that closed containers are used for sample dissolution. XRF is highly recommended for Si, P and Ti analysis. Alternative digestion methods can be applied if their performance is proved to be comparable with those of the methods mentioned in a) to c) (see Annex C).
EN 15410:2011 Referenced Document
EN 13656:2002 Characterization of waste - Microwave assisted digestion with hydrofluoric (HF), nitric (HNO3) and hydrochloric (HCI) acid mixture for subsequent determination of elements*， 2024-04-19 Update
EN 15357:2011 Solid recovered fuels - Terminology, definitions and descriptions
EN 15403:2011 Solid recovered fuels - Determination of ash content
EN 15413:2011 Solid recovered fuels - Methods for the preparation of the test sample from the laboratory sample
EN 15414-3:2011 Solid recovered fuels - Determination of moisture content using the oven dry method - Part 3: Moisture in general analysis sample
EN ISO 11885:2009 Water quality - Determination of selected elements by inductively coupled plasma optical emission spectrometry (ICP-OES)
EN ISO 12020:2000 Water Quality - Determination of Aluminium - Atomic Absorption Spectrometric Methods ISO 12020: 1997
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ISO 9964-1:1993 Water quality; determination of sodium and potassium; part 1: determination of sodium by atomic absorption spectrometry
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ISO 9964-3:1993 Water quality; determination of sodium and potassium; part 3: determination of sodium and potassium by flame emission spectrometry
EN 15410:2011 history
2011EN 15410:2011 Solid recovered fuels - Methods for the determination of the content of major elements (Al, Ca, Fe, K, Mg, Na, P, Si, Ti)