采用反相高效液相色谱法同时测定了咸鸭蛋黄中的斑蝥黄和苏丹红.以乙腈-甲醇-氯仿(体积比为1∶0.5∶0.5)混合溶液提取咸鸭蛋黄中的斑蝥黄和苏丹红.提取液经减压蒸馏至近干,用乙腈定容.以乙腈-水(体积比为95∶5)为流动相,经XDB-C18色谱柱(250 mm×4.6 mm)分离,采用478 nm～520 nm～471 nm三段变波长检测,获得了较好的分离效果和较低的检测限.将该法用于咸鸭蛋黄中斑蝥黄和苏丹红的测定,苏丹红Ⅰ、苏丹红Ⅱ、苏丹红Ⅲ、苏丹红Ⅳ和斑蝥黄的回收率分别为97.34%,89.56%,90.98%,93.63%和95.15%;相对标准偏差分别为2.7%,4.3%,5.1%,4.9%和3.1%.该法简便、快速、准确.
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