磁性氧化石墨烯固相萃取酶联免疫吸附法测定芝麻油中黄曲霉毒素B1含量

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通过共沉淀法合成磁性氧化石墨烯作为磁固相萃取材料,结合酶联免疫吸附法(ELISA)建立测定芝麻油中黄曲霉毒素B1含量的新方法。试验考察了萃取条件和洗脱条件等参数对黄曲霉毒素B1吸附效率的影响,在最优的试验条件下,检出灵敏度为0.05μg/kg,日内和日间相对标准偏差分别为3.75%~5.14%和5.26%~7.15%,实际样品加标回收率在80.6%~92.3%。结果表明,该方法稳定性好、测定准确,适用于芝麻油中黄曲霉毒素B1含量的检测。
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