The results showed that the molecular ion peak of Aris A A is rather strong in the mass spectrum,the detection limit is 5 ng(signal to noise ratio=10). The sensitivity is high enough to determine Aris A A in CTPM.

• 测定结果表明；马兜铃酸A的质谱有较强的分子离子峰；最低检测限为5 ng(信噪比等于10)；可以满足对中成药中马兜铃酸A测定之要求.