论述离子色谱法分析条件优选的数学模型及其在分析近海地下水模拟样品中的应用问题。求解由指数函数和对数函数构成的特征方程可知 ,由等浓度的Na2 CO和NaHCO3组成的淋洗液 ,最佳量浓度为 0 0 0 385mol·L- 1。当使用 80 5 3A分离柱 ,最佳量浓度流动相流速为 2mL·min- 1时 ,样品中七种阴离子 (F- 、CL- 、NO2 - 、PO3- 4、NO- 3、SO2 - 3及SO2 - 4)的背景抑制电导波峰分辨率均可达到 1 5 0以上 Discusses the optimal mathematical model of ion chromatography analysis conditions and its application in the analysis of offshore groundwater simulation samples. Solving the eigenvalue equation composed of exponential and logarithmic functions shows that the optimal concentration of eluent consisting of Na2CO3 and NaHCO3 is 0 0 0 385mol·L-1. When 80 5 3A separation column was used and the optimum mobile phase flow rate was 2 mL · min-1, the seven anions (F-, CL-, NO2-, PO3-4, NO3, SO2-3 and SO2 - 4) background suppression conductance peak resolution can reach more than 150