XP CEN ISO/TS 21268-2
Soil quality - Leaching procedures for subsequent chemical and ecotoxicological testing of soil and soil materials - Part 2 : batch test using a liquid to solid ratio of 10 l/kg dry matter
ISO/TS 21268-2:2007 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 10 l/kg dry matter. It applies to soil and soil material with a particle size less than or equal to 4 mm. ISO/TS 21268-2:2007 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. The test procedure specified in ISO/TS 21268-2:2007 produces eluates, which are subsequently characterised by existing physical, chemical and ecotoxicological standard methods. 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. ISO/TS 21268-2:2007 does not address issues related to health and safety. It only determines the leaching properties.
ISO/TS 21268-2:2007 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 10 l/kg dry matter. It applies to soil and soil material with a particle size less than or equal to 4 mm.
ISO/TS 21268-2:2007 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.
The test procedure specified in ISO/TS 21268-2:2007 produces eluates, which are subsequently characterised by existing physical, chemical and ecotoxicological standard methods.
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. ISO/TS 21268-2:2007 does not address issues related to health and safety. It only determines the leaching properties.
La présente partie de l'ISO/TS 21268 spécifie un essai fournissant des informations sur la lixiviation des sols et des matériaux du sol de granularité inférieure ou égale à 4 mm dans un rapport liquide/solide égal à 10 I/kg de matière sèche. Le mode opératoire spécifié dans la présente partie de l'ISO/TS 21268 permet d'obtenir un éluat qui est ensuite caractérisé par des méthodes physiques, chimiques et écotoxicologiques normalisées.
<p>This document 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 10 l/kg dry matter.</p> <p>The document has been developed to measure the release of inorganic and organic substances from soil and soil-like material as well as to produce eluates for subsequent ecotoxicological testing. For ecotoxicological testing, see ISO 15799<sup>[</sup><sup>6</sup><sup>]</sup> and ISO 17616<sup>[</sup><sup>7</sup><sup>]</sup>.</p> <p>NOTE 1 Volatile organic substances include the low-molecular-weight substances in mixtures such as mineral oil.</p> <p>NOTE 2 It is not always possible to optimize test conditions simultaneously for inorganic and organic substances and optimum test conditions can also vary between different groups of organic substances. Test requirements for organic substances are generally more stringent than those for inorganic substances. The test conditions suitable for measuring the release of organic substances will generally also be applicable to inorganic substances.</p> <p>NOTE 3 Within the category of organic substances, a significant difference in behaviour exists between the more polar, relatively water-soluble compounds and apolar, hydrophobic organic substances (HOCs). In the latter case, mechanisms of release (e.g. particle-bound or dissolved organic carbon-bound) can be more crucial as well as sorption losses of soluble HOCs on different materials with which they come in contact (e.g. bottles, filters). The test and the results should be used for leaching of organic substances only with thorough consideration of the specific properties of the substances in question and the associated potential problems.</p> <p>NOTE 4 For ecotoxicological testing, eluates representing the release of both inorganic and organic substances are needed. In this document, ecotoxicological testing is also meant to include genotoxicological testing.</p> <p>This test method produces eluates, which can subsequently be characterized by physical, chemical and ecotoxicological methods in accordance with existing standard methods. The test is not suitable for substances that are volatile under ambient conditions.</p> <p>This procedure is not applicable to materials with a dry-matter-content ratio lower than 33 %.</p> <p>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 document does not address issues related to health and safety. It only determines the leaching properties as outlined in Clause 4.</p>
- Avant-proposiv
- Introductionv
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1 Domaine d'application1
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2 Références normatives2
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3 Termes et définitions2
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4 Principe4
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5 Réactifs4
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6 Appareillage4
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7 Prétraitement des échantillons6
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7.1 Taille des échantillons6
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7.2 Fractionnement granulométrique6
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7.3 Détermination du rapport entre taux de matière sèche et taux d'humidité7
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7.4 Préparation de la prise d'essai7
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8 Mode opératoire7
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8.1 Conditions d'essai7
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8.2 Description du mode opératoire8
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8.3 Préparation complémentaire de l'éluat pour analyse9
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8.4 Essai à blanc de réalisation du mode opératoire de lixiviation9
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9 Calculs10
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10 Rapport d'essai10
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11 Dosage analytique11
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11.1 Généralités11
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11.2 Calculs et informations relatives à l'essai à blanc11
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12 Caractéristiques de performance11
- Annexe A (informative) Informations relatives à l'incidence sur les résultats d'essai des paramètres influençant la lixiviation12
- Annexe B (informative) Exemple de mode opératoire de séparation liquide-solide spécifique des échantillons de sol (applicable uniquement à la lixiviation des constituants inorganiques)15
- Bibliographie17
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