建立了鸡蛋中6种玉米赤霉醇类化合物(α-玉米赤霉醇、β-玉米赤霉醇、α-玉米赤霉烯醇、β-玉米赤霉烯醇、玉米赤霉酮和玉米赤霉烯酮)残留量的免疫亲和柱净化-高效液相色谱检测方法.样品酶解后用叔丁基甲醚提取、氢氧化钠反萃取,经免疫亲和柱富集和净化后,采用高效液相色谱-紫外检测器进行测定.色谱柱:Agilent Eclipse XDB-C18(150 mm ×4.6 mm,3.5 μm);流动相:甲醇-乙腈-水(50:15:35,v/v/v);流速:1.0 mL/min;检测波长:270 nm.结果表明,6种目标物在0.01 ～0.2 mg/L范围内线性关系良好,相关系数(r)≥0.999 8,检出限(LOD,S/N≥3)为1.0 μg/kg,平均回收率为73.2％～95.7％,相对标准偏差小于8％.该方法灵敏度高、重现性好,适用于鸡蛋样品中痕量玉米赤霉醇类药物残留的测定.
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