建立了固相萃取-高效液相色谱同时分析牛肉干制品中10种杂环胺含量的方法.样品经二氯甲烷(含5％甲苯)萃取,丙基磺酸( PRS)柱和C18固相萃取小柱净化后,以甲醇-氨水定容,经TSK-gel ODS-80TM色谱柱分析,采用乙腈和0.05 mol/L醋酸-醋酸铵缓冲液(pH 3.5)作为流动相进行梯度洗脱,紫外-荧光检测器的串联方式检测杂环胺含量.结果表明,10种杂环胺在线性范围内线性关系良好,相关系数r ＞0.999,检出限为0.02 ～ 2.46 ng/g.杂环胺的加标回收率为61.69％～101.81％,相对标准偏差(RSD)为0.28％～7.81％.8种市售牛肉干制品中均检测出1-甲基-9H-吡啶并[4,3-b]吲哚(Harman)和9H-吡啶并[4,3-b]吲哚(Norharman),可测杂环胺总量为16.65～60.38 ng/g.该方法线性范围广,灵敏度高,净化效果好,可满足实际样品分析的需求.
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