Oecd Guidelines For The Testing Of Chemicals Section 1 Test No 126 Determination Of The Hydrophobicity Index Of Nanomaterials Through An Affinity Measurement
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OECD Guidelines for the Testing of Chemicals, Section 1 Test No. 126: Determination of the Hydrophobicity Index of Nanomaterials Through an Affinity Measurement
This Test Guideline (TG) describes a method to determine the hydrophobicity index (Hy) of nanomaterials (NMs), through an affinity measurement. Hydrophobicity is defined as "the association of non-polar groups or molecules in an aqueous environment which arises from the tendency of water to exclude non-polar molecules".
Human and Ecological Risk Assessment
Author: Dennis J. Paustenbach
language: en
Publisher: John Wiley & Sons
Release Date: 2024-04-15
Understand the fundamentals of human risk assessment with this introduction and reference Human risk assessments are a precondition for virtually all industrial action or environmental regulation, all the more essential in a world where chemical and environmental hazards are becoming more abundant. These documents catalog potential environmental, toxicological, ecological, or other harms resulting from a particular hazard, from chemical spills to construction projects to dangerous workplaces. They turn on a number of variables, of which the most significant is the degree of human exposure to the hazardous agent or process. Human and Ecological Risk Assessment combines the virtues of a textbook and reference work to introduce and analyze these vital documents. Beginning with the foundational theory of human health risk assessment, it then supplies case studies and detailed analysis illustrating the practice of producing risk assessment documents. Fully updated and authored by leading authorities in the field, the result is an indispensable work. Readers of the second edition of Human and Ecological Risk Assessment will also find: Over 40 entirely new case studies reflecting the latest in risk assessment practice Detailed discussion of hazards including air emissions, contaminated food and soil, hazardous waste sites, and many more Case studies from multiple countries to reflect diverse international standards Human and Ecological Risk Assessment is ideal for professionals and advanced graduate students in toxicology, industrial hygiene, occupational medicine, environmental science, and all related subjects.
Lignes directrices de l'OCDE pour les essais de produits chimiques, Section 1 Essai n°126 : Détermination de l'index d'hydrophobicité des nanomatériaux par mesure de l'affinité
Cette Ligne directrice décrit une méthode qui permet de déterminer l'index d'hydrophobicité (Hy) des nanomatériaux (NMs), au moyen d'une mesure d'affinité. L'hydrophobicité est définie par "l'association de groupes ou molécules non-polaires dans un environnement aqueux qui provient de la tendance de l'eau d'exclure les moléculaes non-polaires". En mesurant le taux de liaison à différentes surfaces conçues (colleceteurs), Hy exprime la tendance des nanomatériaux de se lier à des surfaces non-poliares (hydrophobiques) à cause de leur faible affinité pour l'eau. La méthode s'applique aux nanomatériaux dispersés dans une solution aqueuse ou à des poudres de NMS après leur dispersion dans des solutions aqueuse, avec ou sans tensioactif, suivant un protocole recommandé.