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Collective paramagnetic particles

A chemical bond between the surface atom of the particle and an adsorbed species effectively removes the surface atoms from the collectively paramagnetic particle. Thus, chemisorption produces a decrease in the magnetization, M. In practice, the change in relative magnetization, A M/M, is calibrated by comparison with changes produced by chemisorption of hydrogen on the same sample. It is well established that hydrogen is adsorbed as atoms so that each molecule of forms two chemisorption bonds. Experi-... [Pg.136]

As is shown in Figure 3, Mossbauer spectra of t)Tpical airborne particles collected in Tokyo (urban area) and at Tokai (remote area) indicate the presence of paramagnetic Fe (iron in common silicate minerals), Fe , and magnetic components (hematite and magnetite)... [Pg.500]

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Collection particle

Paramagnetic particle

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