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以 3 -对羟基苯甲酰喹啉 -2 -甲醛 ( CBQCA)为检测痕量氨基酸的柱前衍生试剂 ,利用高效液相色谱 -激光诱导荧光 -增强型电荷耦合器件检测器 ( HPLC-LIF-ICCD)系统 ,考察了氨基酸衍生和 HPLC分离过程中多种因素的影响 ,建立了 HPLC-LIF-ICCD分离检测痕量氨基酸的新方法 ,并应用于鼠脑微透析液的氨基酸检测 .当信噪比为 3时 ,对甘氨酸的质量检出限为 5fmol
A high performance liquid chromatography - laser induced fluorescence - enhanced charge - coupled device detector (HPLC-LIF-HPLC) was developed using 3-hydroxybenzoylquinoline-2-carboxaldehyde (CBQCA) as a pre-column derivatization reagent for the determination of trace amino acids. ICCD) system, the effects of various factors on amino acid derivatization and HPLC separation were investigated, and a new method for the determination of trace amino acids by HPLC-LIF-ICCD was established and applied to the determination of amino acids in rat brain microdialysates. Ratio of 3, the quality of the glycine detection limit of 5fmol