Rapid determination of iron oxide content in magnetically modified particulate materials

0459441 - BC 2017 RIV CN eng J - Journal Article
Šafařík, Ivo - Nýdlová, L. - Pospíšková, K. - Baldíková, E. - Maděrová, Z. - Šafaříková, Miroslava
Rapid determination of iron oxide content in magnetically modified particulate materials.
Particuology. Roč. 26, June (2016), s. 114-117. ISSN 1674-2001. E-ISSN 2210-4291
Institutional support: RVO:60077344
Keywords : magnetic iron oxides * magnetic permeability meter * magnetically modified materials
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.621, year: 2016

Magnetically responsive composite materials have been used in interesting applications in various areas of bioscience, biotechnology, and environmental technology. In this work, a simple method to determine the amount of magnetic iron oxide nano- and microparticles attached to magnetically-modified particulate diamagnetic materials has been developed using a commercially available magnetic permeability meter. The procedure is fast and enables dry particulate magnetically modified materials to be analysed without any modification or pretreatment. We show that the magnetic permeability can be measured for materials containing up to 20% magnetic iron oxide. The magnetic permeability measurements are highly reproducible.
Permanent Link: http://hdl.handle.net/11104/0259646