EPR Of the SeO43-, SeO3-, SeO2- and NH3+ radicals in ultraviolet-irradiated crystals of ammonium compounds

Yu Jiang-Tsu Yu*, Wu Ching-Jiun Wu, Lou Ssu-Hao Lou


研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)


Oxyradicals of selenium, such as the SeO43-, SeO4-, SeO3- and SeO2- are conventionally produced via γ- or X-irradiation. The same is also true of the NH3+ radical. We report for the first time EPR observations of these radicals produced by ultraviolet (u.v.)-irradiation in some ammonium compounds. We have investigated u.v.-irradiated crystals of (NH4)2SO4, LiNH4SO4, (NH4)3H(SeO4)2 and NH4H2PO4. The NH3+ radical has been detected by EPR in u.v.-irradiated (NH4)2SO4 and LiNH4SO4 crystals. The NH3+ radical is produced at the first stage of the u.v. photo-dissociation of the NH4+ ion in solids. The oxyradicals of selenium detected by EPR in some ammonium compounds can be regarded as the product of an u.v. photo-redox reaction between the NH4+ ion and the SeO42- ion.

頁(從 - 到)1015-1021
期刊Journal of Physics and Chemistry of Solids
出版狀態已發佈 - 1993 九月

ASJC Scopus subject areas

  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學


深入研究「EPR Of the SeO<sub>4</sub><sup>3-</sup>, SeO<sub>3</sub><sup>-</sup>, SeO<sub>2</sub><sup>-</sup> and NH<sub>3</sub><sup>+</sup> radicals in ultraviolet-irradiated crystals of ammonium compounds」主題。共同形成了獨特的指紋。