建立了同时检测葡萄糖醛酸和葡萄糖醛酸内酯的离子排斥色谱法.采用Boston HC-B75 H+色谱柱进行分离,以5 mmol/L H2SO4水溶液为流动相,流速0.6 mL/min,柱温25℃,紫外检测波长220 nm;根据外标法定量,葡萄糖醛酸和内酯分别在10~1200 mg/L和5~600 mg/L范围内线性良好(r>0.9999);葡萄糖醛酸、葡萄糖醛酸内酯的最低检测限及定量限均分别为0.1和0.3 mg/L,精密度实验RSD分别为1.00%和0.35%,平均回收率分别为99.69%和98.21%.该检测方法简便、快速、灵敏,可用于葡萄糖醛酸和葡萄糖醛酸内酯的同时测定.温度、pH值和溶剂对葡萄糖醛酸稳定性有影响,可为葡萄糖醛酸的分析与制备研究提供参考依据.
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