01424nM2.01200024      h001 3506866\x1e002a20241209000000.0\x1e003 20250210000000.0\x1e02
5o1492121842\x1e030 zz5dr|rz|||3|\x1e037beng\x1e050 ||||||||g|||||\x1e051 m||||||\x1e060 \x1faText
\x1fbtxt\x1e061 \x1faComputermedien\x1fbc\x1e062 \x1faOnline-Ressource\x1fbcr\x1e070 BVB\x1e076 RDA-Aufnahm
e\x1e077 \x1fc0\x1e331 Test No. 126: Determination of the Hydrophobicity Index of Nanomat
erials Through an Affinity Measurement\x1e359 Organisation for Economic Co-operatio
n and Development\x1e410 Paris\x1e412 OECD Publishing\x1e419 \x1faParis\x1fbOECD Publishing\x1fc20
23\x1e425a2023\x1e433 1 Online-Ressource (19 Seiten)\x1e435 21 x 29.7cm\x1e451 OECD Guidelin
es for the Testing of Chemicals, Section 1\x1e540aISBN 978-92-64-41724-3\x1e655e\x1fxVerl
ag\x1fzkostenfrei\x1f3Volltext\x1fuhttps://doi.org/10.1787/ae9c0fd1-en\x1e750 This Test Guid
eline (TG) describes a method to determine the hydrophobicity index (Hy) of nano
materials (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". By measuring
 their binding rate to different engineered surfaces (collectors), Hy expresses 
the tendency of the NMs to favour the binding to a non-polar (hydrophobic) surfa
ce because of its low affinity for water. The method applies to NMs dispersed in
 an aqueous solution or to NM powders after their dispersions in aqueous solutio
ns, with or without a surfactant, using a recommended protocol\x1e\x1d