液相色谱-电喷雾电离/离子阱质谱法分析金线莲中3-吡啶甲醇

Analysis of 3-pyridinemethanol in Anoectochilus Roxburghii by Liquid Chromatography-Electrospray Ion Trap Mass Spectrometry

  • 摘要: 应用现代提取技术超声-微波协同萃取金线莲中的3-吡啶甲醇,采用固相萃取技术对样品进行前处理,高效液相色谱法-电喷雾电离/离子阱质谱法(HPLC-ESI/MS)对提取物中3-吡啶甲醇进行测定和鉴别.色谱条件:Agilent TC-C18色谱柱(5 μm,4.6×250 mm),流动相:甲醇-0.02 mol/L乙酸铵(5∶95,V/V),流速:1 mL/min,检测波长:260 nm.结果表明峰面积与3-吡啶甲醇在浓度1~10 μg/mL范围内呈良好线性关系.回收率在92.0%~96.2%之间,相对标准偏差为2.36%.该法简便、准确、快速.

     

    Abstract: 3-pyridinemethanolwas extracted from Anoectochilus roxburghiiby the ultrasonic-microwave assisted extraction(UMAE). After pretreatment using solid phase extraction(SPE) technology, 3-pyridinemethanolwas identified and determined by high performance liquid chromatography-electrospray ion traps mass spectrometry. The chromatographic separation was achieved on an Agilent TC-C18column(5 μm,4.6×250 mm)using methanol -0.02 mol/L ammonium acetate(5∶95,V/V)as the mobile phase at a flow rate of 1.0 mL/min, and 260 nm as the detection wavelength. The analyte showed good linear regression relationship between peak area and concentrations in the range of 1~10 μg/mL (r=0.9996).The recovery rate was 92.0%~96.2% with an RSD of 2.36%. The proposed method is simple, accurate and rapid.

     

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