Abstrakti
In addition to the main ingredients; sulfur, potassium chlorate and carbon, ordinary safety matches contain various dyes, glues etc, giving the head of the match an even texture and appealing color. Among the common reddish-brown matches there are several types, which after ignition can be attracted by a strong magnet. Before ignition the match head is generally not attracted by the magnet. An elemental analysis based on proton-induced x-ray emission was performed to single out iron as the element responsible for the observed magnetism. Fe-57 Mossbauer spectroscopy was used for identifying the various types of iron-compounds, present before and after ignition, responsible for the macroscopic magnetism: Fe2O3 before and Fe3O4 after. The reaction was verified by mixing the main chemicals in the match-head with Fe2O3 in glue and mounting the mixture on a match stick. The ash residue after igniting the mixture was magnetic.
Alkuperäiskieli | Ei tiedossa |
---|---|
Sivut | – |
Sivumäärä | 6 |
Julkaisu | European Journal of Physics |
Vuosikerta | 38 |
Numero | 4 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 2017 |
OKM-julkaisutyyppi | A1 Julkaistu artikkeli, soviteltu |
Keywords
- Mossbauer spectroscopy
- matches
- proton-induced x-ray emission
- magnetism
- PIXE