建立了离子色谱法测定饲料中氯化胆碱含量及鉴别饲料中氯化胆碱及掺假物三甲胺的方法.选用IonPac CS12阳离子交换色谱柱(250 mm×4 mm i.d.)和8.5 mmol/L H2SO4淋洗液,抑制型电导检测,在16 min内分离测定了包括胆碱和三甲胺在内的8种阳离子.胆碱和三甲胺的最小检出限分别为0.1 mg/L和0.05 mg/L.方法回收率为99.25%～102.5%.该方法具有灵敏度高、选择性强、操作简单等优点.
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