摘要
在无任何保护性介质存在下 ,以Na2 SO3 作化学除氧剂 ,KI为重原子微扰剂 ,菲即能产生强而稳定的流体室温磷光发射。激光和发射波长λex/λem 为 2 83 482 ,5 0 4nm ,不同有机溶剂存在对其磷光发射的性质有不同影响。 1%乙腈存在时 ,菲浓度在 8 0× 10 - 7～ 6 0× 10 - 6 mol·L- 1 和 6 0× 10 - 6 ～ 4 0× 10 - 5 mol·L- 1范围内分别与磷光发射强度呈良好的线性关系 ,检出限为 2 6× 10 - 8mol·L- 1 。
A strong and stable room temperature phosphorescence (RTP) signal of phenanthrine aqueous solution in the absence of a protecting medium can be induced only by using Na2SO3 as deoxygenator and KI as heavy atom pertuber. The maximum phosphorescence intensity wavelengths are lambda (ex)/lambda (em) = 283/482,504 nm. It is also found that the kind and amount of organic solvent added to the luminescent system effects obviously the RTP properties. Under the present of 1% acetonitrile the RTP intensity is linear to phenanthrine concentration in the rage of 8.0 x 10(-7)-6.0 x 10(-6) mol . L-1 and 6.0 x 10(-6) mol . L-1 -4.0 x 10(-5) mol . L-1, respectively. The detection limit is 2.6 x 10(-8) mol . L-1.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2001年第2期215-217,共3页
Spectroscopy and Spectral Analysis
基金
国家自然基金!资助项目 (2 97750 1 3)
关键词
菲
无保护流体
室温磷光
有机溶剂
亚硫酸钠
碘代钾
phenanthrine
non-protected fluid room temperature phosphorescence
organic solvent effects
