Nitrogen dioxide (NO2) created by gamma-rays in Antarctic ice and rime ice

Takeshi Yada; Kimihiro Norizawa; Atsushi Tani; Motoji Ikeya

doi:10.1016/j.apradiso.2004.08.037

Nitrogen dioxide (NO2) created by gamma-rays in Antarctic ice and rime ice

Appl Radiat Isot. 2005 Feb;62(2):255-9. doi: 10.1016/j.apradiso.2004.08.037.

Authors

Takeshi Yada¹, Kimihiro Norizawa, Atsushi Tani, Motoji Ikeya

Affiliation

¹ Graduate School of Science, Department of Earth and Space Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.

PMID: 15607458
DOI: 10.1016/j.apradiso.2004.08.037

Abstract

Antarctic ice and rime ice after gamma-irradiation at 77 K were studied by electron spin resonance (ESR). The signal of nitrogen dioxide (NO2) was detected in both ices. The NO2 in the Antarctic ice, in particular, may be created from NO3- by reactions associated with intrinsic OH radicals. The detection limit of NO2 in solid samples was estimated to be approximately 0.02 ppm with ESR. The analysis using ESR in natural ice has a potential to trace environmental NO2.