title: [Analysis of the spectrum of damage effects of low energy N+ ions on cytosine aqueous solution].
abstract: Low energy N+ ions were produced by gas arc-discharge and the ions were accelerated into cytosine (C) aqueous solution. Changes in UV and infrared spectra of C after this kind of ions' action were investigated. UV spectra showed that absorption at 259 nm gradually decreased and lambda max of C solution moved toward the longer wavelength with the time. Thus, it was deduced that C was damaged and some fragments including -NO2 and -NH2 groups might have been produced. Judging from the IR spectra, the disappearance of the peak of 3,005 cm-1 confirmed the formation of -NO2 groups. All these results revealed that N+ ions caused various damages on C molecules and many new substances were formed. These new substances were not synthesized only by combination of the damage fragments in the solution, but also by "deposition" of N+ from outside.
authors.affiliation: Institute of Plasma Physics, Academia Sinica, Hefei 230031, China.
authors.forename: H B
authors.initials: HB
authors.lastname: Shi
authors.forename: C L
authors.initials: CL
authors.lastname: Shao
authors.forename: X Q
authors.initials: XQ
authors.lastname: Wang
authors.forename: Z L
authors.initials: ZL
authors.lastname: Yu
mesh_terms: D003596:Cytosine / Q000737:chemistry*; D007477:Ions; D009584:Nitrogen; D012996:Solutions; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D007477:Ions; D012996:Solutions; D003596:Cytosine; D009584:Nitrogen