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奶粉中三聚氰胺残留的检测

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摘要 本试验采用C18柱作为色谱分析柱,90%离子对试剂为流动相,奶粉样品经混合均匀后,用三氯乙酸-乙腈溶液提取,经阳离矛交换固相萃取柱净化、富集后,在紫外检测器240nm处用高效液相色谱仪测定,保留时间在19.92~19.96min。标准曲线在1.0—80.0μg/ml浓度内呈线性相关,相关系数(r)为1.00000。在空白奶粉样品中添加10mg/kg的三聚氰胺,回收率为97.69%,相对标准偏差(RSD)为3.02%。
作者 漆筱红
出处 《科技与生活》 2011年第13期200-201,共2页
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