本文利用高效液相色谱 电喷雾 质谱/质谱(HPLC ESI MS/MS)联用对灯盏花提取液进行了分离,并对其中的主要成分进行了定性分析。一级质谱扫描结果表明,灯盏花提取液中主要有4个峰,其中,第一个峰可能为5,6,4 三羟基黄酮 7 o β D 半乳糖醛...本文利用高效液相色谱 电喷雾 质谱/质谱(HPLC ESI MS/MS)联用对灯盏花提取液进行了分离,并对其中的主要成分进行了定性分析。一级质谱扫描结果表明,灯盏花提取液中主要有4个峰,其中,第一个峰可能为5,6,4 三羟基黄酮 7 o β D 半乳糖醛酸苷,第二峰为灯盏花乙素;后两峰为黄芩甙,两者可能互为同分异构体。展开更多
CZE ESI MS is one of the most sensitive detection method and one of the potential method for protomics analysis. In this work, peptide mixture was separated and detected by using CZE ESI MS, and the influence of pH va...CZE ESI MS is one of the most sensitive detection method and one of the potential method for protomics analysis. In this work, peptide mixture was separated and detected by using CZE ESI MS, and the influence of pH value of buffer and composition of sheath liquid on CE separation and MS detection was investigated. The method allows the detection limits up to 4 2—33 pg. The result of this method is better than that of CE UV for the peptide analysis.展开更多
文摘本文利用高效液相色谱 电喷雾 质谱/质谱(HPLC ESI MS/MS)联用对灯盏花提取液进行了分离,并对其中的主要成分进行了定性分析。一级质谱扫描结果表明,灯盏花提取液中主要有4个峰,其中,第一个峰可能为5,6,4 三羟基黄酮 7 o β D 半乳糖醛酸苷,第二峰为灯盏花乙素;后两峰为黄芩甙,两者可能互为同分异构体。
文摘CZE ESI MS is one of the most sensitive detection method and one of the potential method for protomics analysis. In this work, peptide mixture was separated and detected by using CZE ESI MS, and the influence of pH value of buffer and composition of sheath liquid on CE separation and MS detection was investigated. The method allows the detection limits up to 4 2—33 pg. The result of this method is better than that of CE UV for the peptide analysis.