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Screening analysis of inorganic components like fillers, flame retardants, for up to 71 elements according to DIN 51418
- Determination of HBCD in polystyrene
- Determination of chlorine content in packaging materials for food
- X-ray microanalysis, EDX of inclusions and impurities
Additional information on X-ray fluorescence analysis of
Analytical techniques for the analysis of plastics and rubbers by XRF
- XRF-analysis of plastics and rubbers from pressed powders or nondestructive on original sample
- Screening analysis for up to 71 elements
Advantages of the X-ray fluorescence analysis, XRF
- accredited testing methods according to national and internationals norms
- cost efficient analyses
- short processing times
- high-precision analyses, low detection limits
- up to 71 elements during one measurement
Especially suitable for environmentally relevant samples such as, for instance, contaminated or non-contaminated soil, clarifier sludge, refuse incineration residues, but also FGD gypsum, fly ash and other material. Owing to the type of preparation, texture and grain size effects may cause identification errors of the light major elements with atomic numbers up to 15. As far as the evaluation of raw material is concerned at least the elements ranging from Na to Si should also be additionally analyzed by fusion.
The 27-element software program is especially suitable when dealing with problems for which a specific range of elements need to be analysed, such as the LAGA or the Kloke lists, the Sewage Sludge Ordinance, or EC Directives. In environmental toxicology, however, a large number of additional elements exist which are not considered in these lists of detection limits, standard and reference values.
If a contamination with one or more of these elements is suspected or when drawing up land cadastres, we recommend that a more comprehensive measurement programme for 40 or 50 elements be chosen.
In the above cases, the material is carefully prepared as follows: the sample is dried in a drying oven at a temperature of 40°C to prevent volatilisation losses of metallic or metal-organic mercury compounds, for example, and then ground in an agate mill, unless this has already been done before supplying the material.
! Please note !
In order to guarantee standard conformity of analysis the sample material must be ground to a grainsize < 63 µm, dried at 105°C and we need the value for the loss on ignition, LOI, as a kind of pre-preparation of the sample..
Consequently and if obligatory we carry out the sample preparation as mentioned obove - grinding, drying, determination of LOI - even though you have not explicitely ordered it.
The fundamental parameter programme Omnian provides a matrix-independent, quantitative, semi-quantitative or qualitative XRF analysis of unknown samples with a variety of material properties and different organic and inorganic compositions.
Samples can be analyzed either after preparation or without preparation and non-destructively in case of a suitable composition, i.e. X-ray and vacuum stable and depending on their surface condition.This enables us to determine element concentrations between the minimum detection limit, usually 250 µg/g and 100%.
! Please note !
In order to guarantee standard conformity of analysis the sample material must be ground to a grainsize < 63 µm, dried at 105°C and we need the value for the loss on ignition, LOI, as a kind of pre-preparation of the sample..
Consequently and if obligatory we carry out the sample preparation as mentioned obove - grinding, drying, determination of LOI - even though you have not explicitely ordered it.
Standards and guidelines for XRF-analysis of plastics and rubbers
- DIN EN 62321-3-1:2014-10 - Determination of certain substances in electrotechnical products - Part 3-1: Screening - Lead, mercury, cadmium, total chromium and total bromine by X-ray fluorescence spectrometry
- DIN 51001:2003-08 - Testing of oxidic raw materials and basic materials - General bases of work for X-ray fluorescence method (XRF)
- DIN 51418-2:2015-03 - X-ray spectrometry - X-ray emission and X-ray fluorescence analysis (XRF) - Part 2: Definitions and basic principles for measurements, calibration and evaluation of results