StandardsISOISO TS 21268-1: Soil Quality - Leaching Procedures for Subsequent Chemical and Ecotoxicological Testing of Soil and Soil Materials - Part 1: Batch Test Using a Liquid to Solid Ratio of 2 L/kg Dry Matter
ISO TS 21268-1: Soil Quality - Leaching Procedures for Subsequent Chemical and Ecotoxicological Testing of Soil and Soil Materials - Part 1: Batch Test Using a Liquid to Solid Ratio of 2 L/kg Dry Matter pdf Download
This part of ISO 21268 specifies a test providing information on leaching of soil and soil materials under the experimental conditions specified hereafter, and particularly at a liquid to solid ratio of 2 l/kg dry matter. This part of ISO 21268 has been developed to measure the release of inorganic and organic constituents from soil and soil material and the ecotoxicological effects of eluates with respect to micro-organisms, fauna and flora. The test is not suitable for constituents that are volatile under ambient conditions. For ecotoxicological testing, see ISO 15799. NOTE 1 Volatile organic constituents include the low-molecular-weight components in mixtures such as mineral oil. NOTE 2 It is not always possible to optimise test conditions simultaneously for inorganic and organic constituents and optimum test conditions may also vary between different groups of organic constituents. Test requirements for organic constituents are generally more stringent than those for inorganic constituents. The test conditions suitable for measuring the release of organic constituents will generally also be applicable to inorganic constituents. NOTE 3 For ecotoxicological testing, eluates representing the release of both inorganic and organic contaminants are needed. In this document, ecotoxicological testing is also meant to include genotoxicological testing. The test procedure specified in this part of ISO 21268 produces eluates, which are subsequently characterised by existing physical, chemical and ecotoxicological standard methods. This procedure is not applicable to materials with a dry-matter-content ratio lower than 33 %. This test is mainly aimed at being used for routine and control purposes, and it cannot be used alone to describe all leaching properties of a soil. Additional leaching tests are needed for that extended goal. This part of ISO 21268 does not address issues related to health and safety. It only determines the leaching properties as outlined in Clause 4.
Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents 6 Apparatus 7 Sample pre-treatment 7.1 Sample size 7.2 Particle size reduction 7.3 Determination of dry matter content and water content 7.4 Preparation of test portion 8 Procedure 8.1 Testing conditions 8.2 Description of the procedure 8.2.1 Leaching step 8.2.2 Liquid-solid separation step 8.3 Further preparation of the eluate for analysis 8.4 Blank test for the application of the leaching procedure 9 Calculation 10 Test report 11 Analytical determination 11.1 General 11.2 Calculations and blank test information 12 Performance characteristics Annex A (informative) Information on the influence on the test results of the parameters that affect leaching Annex B (informative) Example of a specific liquid-solid separation procedure for soil samples (applying only to the leaching of inorganic constituents) Bibliography