DIN Standards Committee Water Practice
Environmental solid matrices - Guidance for sample pretreatment
Abstract
This document specifies the pretreatment required for sludge, treated biowaste, waste, sediment and soil (including soillike materials), that are subject to the analysis of organic as well as inorganic chemical and physicochemical parameters. This document is applicable for the preparation of representative test portions from the laboratory sample that has been taken according to the sampling plan. Sampling is not part of this standard. The pretreatment of samples aims at preparing a (small) test sample which is representative for the original sample. This document describes the pretreatment under laboratory conditions (Clause 10). For determining inorganic chemical and physicochemical parameters this document describes procedures to prepare: 1. test samples of solid samples (10.2 and 10.5); 2. test samples of liquid sludge, liquid sediment and liquid waste (10.4 and 10.5). For determination of organic compounds three pretreatment methods are specified for solid sludge, solid sediment, treated biowaste and soil: 1. a pretreatment method if volatile organic compounds are to be measured (see 10.3.2); 2. a pretreatment method if semivolatile to nonvolatile organic compounds are to be measured (see 10.3.3); 3. a pretreatment method if semivolatile to nonvolatile organic compounds are to be measured and the extraction procedure prescribes a field moist sample or if only indicative results are required (see 10.3.4). The choice of the method depends above all on the volatility of the analyte. It also depends on the particle size distribution of the material (see Clause 10.1.2), the heterogeneity of the sample and the following analytical procedure. Pretreatment procedures for the analysis of organic compounds in waste are described in 10.5.
Begin
2025-10-01
WI
00444273
Planned document number
00444273
Responsible national committee
NA 119-08-02 AA - Chemical and physical methods
