Kok W T, Groenendijk G, Brinkman U A, Frei R W
J Chromatogr. 1984 Dec 19;315:271-8. doi: 10.1016/s0021-9673(01)90744-7.
Oxalic acid was separated from interfering compounds with a solvent-generated ion-exchange chromatographic system, and detected with a copper electrode amperometric detector. The lower limit of detection in standard solutions was 5 ng. Complex samples, such as vegetable extracts and urine, could be analysed with a minimum of sample preparation.
采用溶剂生成离子交换色谱系统将草酸与干扰化合物分离，并用铜电极安培检测器进行检测。标准溶液中的检测下限为5纳克。对于复杂样品，如蔬菜提取物和尿液，只需进行最少的样品制备即可进行分析。
