目的建立一种离子色谱-电导检测法快速测定乳与乳制品中硫氰酸根含量的方法。方法样品经水和甲醇震荡提取、离心后上清液用滤膜过滤后,AS16分离柱分离,由35 mmol/L氢氧化钾溶液等度洗脱,用电导检测器检测,外标法定量。结果方法的线性范围为0.02~20μg/m L,R=0.9990,检出限为0.1 mg/kg,相对标准偏差为0.89%~3.31%,回收率范围为96%~105%。结论该离子色谱法快速、准确、精密度高,适用于乳与乳制品中硫氰酸根的批量检测。 Objective To establish a method for the rapid determination of thiocyanate in milk and dairy products by ion chromatography-conductivity detection. Methods The samples were extracted by shaking with water and methanol. After centrifugation, the supernatant was filtered through a membrane filter and separated by AS16 column. The column was eluted with 35 mmol / L potassium hydroxide solution and detected by conductance detector. Results The linear range of the method was 0.02 ~ 20μg / mL with R = 0.9990. The detection limit was 0.1 mg / kg. The relative standard deviations were 0.89% -3.31%. The recoveries ranged from 96% to 105%. Conclusion The ion chromatography is rapid, accurate and accurate. It is suitable for the batch detection of thiocyanate in milk and dairy products.