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2. 净化:提取液经免疫亲和柱富集,水洗去除杂质后用甲醇洗脱;
3. 浓缩:氮吹浓缩至干,流动相复溶后过滤;
4. 上机分析:HPLC-FLD检测,色谱条件为C18柱,流动相为甲醇-水(45:55),激发波长365 nm,发射波长435 nm。
2. 免疫亲和柱需验证批间一致性,避免交叉污染;
3. 每批次检测需加标回收率实验(建议添加浓度0.5-5 μg/kg),回收率范围应为70%-120%;
4. 标准品溶液需现配现用,避光保存不超过24小时。
以上信息仅供参考,请以相应标准的原文为准!