引用本文:
王祥洪, 杨季冬, 刘绍璞, 刘忠芳. 夜蓝共振瑞利散射法测定七叶皂苷钠[J]. 应用化学,
2008, 25(6): 656-660.
Citation: WANG Xiang-Hong, YANG Ji-Dong, LIU Shao-Pu, LIU Zhong-Fang. Resonance Rayleigh Scattering Method for Determination of Sodium Aescinate by Means of Night Blue[J]. Chinese Journal of Applied Chemistry, 2008, 25(6): 656-660.
Citation: WANG Xiang-Hong, YANG Ji-Dong, LIU Shao-Pu, LIU Zhong-Fang. Resonance Rayleigh Scattering Method for Determination of Sodium Aescinate by Means of Night Blue[J]. Chinese Journal of Applied Chemistry, 2008, 25(6): 656-660.
夜蓝共振瑞利散射法测定七叶皂苷钠
English
Resonance Rayleigh Scattering Method for Determination of Sodium Aescinate by Means of Night Blue
Abstract:
In a BR buffer medium of pH 4.5~5.5,sodium aescinate can be bound to Night blue dye to form a binding product of 1:1,which results in great enhancement of RRS and a new RRS spectrum appears.The maximum RRS peak was located at 416 nm and the intensity of RRS was directly proportional to the concentration of SA in a range of 0.025~20.0×10-6 g/mL for an NB-SA system.The method had high sensitivity and the detecting limit of SA (3σ) was 7.5×10-9 g/mL for an NB-SA system.The influences of some coexisiting substances were investigated.The RRS method was applied to the determination of trace amounts of sodium aescinate in injection samples,tablet samples and urine samples with satisfactory results.
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Key words:
- sodium aescinate
- / night blue
- / Resonance Rayleigh scattering
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