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利用高效液相色谱法检测牛乳中残留的青霉素V钾的研究 被引量:6

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摘要 本文主要研究了如何利用高效液相色谱法检测牛乳中残留的青霉素V钾。根据以前的文献报道,样品前处理的时候主要是利用酸或碱的方法来沉淀蛋白,这样做会在一定程度上使抗生素分解,从而使定量不够准确。本实验采用无水乙醇作为沉淀剂,可以有效地防止抗生素水解。色谱条件为:ZORBOX ODSC18柱、洗脱液为磷酸二氢钠(pH值4.5)与甲醇的混合液、流速为1mL/min、柱温40℃、紫外检测波长为230nm。青霉素钾在100μg/L ̄500μg/L范围内浓度与峰面积线性关系良好,线性相关系数为0.9909,平均回收率为82.33%,相对标准偏差为2.42%(n=5)。
出处 《农产品加工》 2008年第2期71-72,74,共3页 Farm Products Processing
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