CEN ISO/TS 21268-4:2009 Soil quality - Leaching procedures for subsequent chemical and ecotoxicological testing of soil and soil materials - Part 4: Influence of pH on leaching with initial acid/base addition (ISO/TS 21268-4:2007)
This part of ISO/TS 21268 specifies a test method to provide information on the short-term and long-term leaching behavior and characteristic properties of materials. It is used to investigate the influence of pH on the leachability of inorganic and organic components from soils and soil materials as well as the ecotoxicological effects of eluates on microorganisms, fauna and flora. The test is not suitable for components that are volatile under ambient conditions. The equilibrium state, as defined in this part of ISO/TS 21268, is established by adding predetermined amounts of acid or base to achieve the desired final pH values. The test procedure specified in this part of ISO/TS 21268 produces eluates which are then physically, chemically and ecotoxicologically characterized according to standard procedures. For carrying out ecotoxicological studies, the relevant pH value range (see 9.2) is usually between 5 and 9. NOTE 1 Volatile organic components include low molecular weight components in mixtures, such as: B. mineral oil. NOTE 2 It is not always possible to optimize test conditions for inorganic and organic components simultaneously, and the optimal test conditions may also differ for different groups of organic components. The testing requirements for organic components are generally more stringent than for inorganic components. The test conditions suitable for measuring the release of organic components are generally also applicable to inorganic components. NOTE 3 Ecotoxicological studies require eluates that reflect the release of both inorganic and organic pollutants. In this document, the ecotoxicological study also includes the genotoxicological study. This test method alone is not sufficient to determine the entire leaching behavior of a soil. Further leaching testing is required for this expanded objective. This part of ISO/TS 21268 does not address health and safety issues. It is only used to determine the leaching properties shown in Section 5.
CEN ISO/TS 21268-4:2009 Referenced Document
ISO 10381-1:2002 Soil quality - Sampling - Part 1: Guidance on the design of sampling programmes
ISO 10381-2:2002 Soil quality - Sampling - Part 2: Guidance on sampling techniques
ISO 10381-3:2001 Soil quality - Sampling - Part 3: Guidance on safety
ISO 10381-4:2003 Soil quality - Sampling - Part 4: Guidance on the procedure for investigation of natural, near-natural and cultivated sites
ISO 10381-5:2005 Soil quality - Sampling - Part 5: Guidance on the procedure for the investigation of urban and industrial sites with regard to soil contamination
ISO 11465:1993 Soil quality; determination of dry matter and water content on a mass basis; gravimetric method
ISO 3696:1987 Water for analytical laboratory use; Specification and test methods
ISO 5667-3:2003 Water quality - Sampling - Part 3: Guidance on the preservation and handling of water samples
ISO 7027:1999 Water quality - Determination of turbidity
CEN ISO/TS 21268-4:2009 history
2019EN ISO 21268-4:2019 Soil quality - Leaching procedures for subsequent chemical and ecotoxicological testing of soil and soil-like materials - Part 4: Influence of pH on leaching with initial acid/base addition (ISO 21268-4:2019)
2009CEN ISO/TS 21268-4:2009 Soil quality - Leaching procedures for subsequent chemical and ecotoxicological testing of soil and soil materials - Part 4: Influence of pH on leaching with initial acid/base addition (ISO/TS 21268-4:2007)