DIN EN 16166:2012-11

This document describes an empirical method for the direct determination of organically bound chlorine, bromine and iodine (but not fluorine) adsorbed and occluded to the sample matrix. Non-volatile organically bound halogens adsorbable on activated carbon present in the aqueous phase of the sample prior to drying or adsorbed to sample surface are included in the determination. This European Standard is intended for analysis of sludge, treated biowaste or soil in concentrations ranging from 5 mg/kg dry matter to approximately 6 g/kg dry matter. The exact concentration range covered depends on the instrument used for determination. The preparation of this document by CEN is based on a mandate by the European Commission (Mandate M/330), which assigned the development of standards on sampling and analytical methods for hygienic and biological parameters as well as inorganic and organic determinants, aiming to make these standards applicable to sludge, treated biowaste and soil as far as this is technically feasible. So far, the test methods for the determination of material properties in the environmental sector have been prepared in the technical committees (TCs) responsible for the individual products or materials (for example, soil, waste, sludge). It has been established, however, that single steps of test methods can also be used for analysis of various other materials. By thorough preparation of such steps and the selection of special questions within these steps, parts of the test methods can be specified in a way which allows for application for other matrices and materials within certain limits. This optimization is made together with the users of standards. The majority of routine inspections in the environmental sector are carried out by bodies and laboratories where the field of operation is not limited to one environmental matrix but covers a large variety of matrices. The availability of standards covering several matrices provides for optimization of workflows in laboratories and running expenses, for example, for accreditation and approval. A horizontal, modular approach has been developed in the project "Horizontal". "Modular" means that a standard prepared in accordance with this approach applies for a certain level during the evaluation of a property and not for the entire "measurement chain" (ranging from sampling to the individual analyses). An advantage of this approach is the replacement of individual "modules" by more suitable modules without the entire standardized "chain" becoming void.