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OALib Journal期刊
ISSN: 2333-9721
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用于高效液相色谱测定乳制品中三聚氰胺的流动注射在线固相萃取富集系统
DOI: 10.3724/SP.J.1096.2012.10709, PP. 298-303
Keywords: 三聚氰胺,固相萃取,流动注射,高效液相色谱,乳制品
Abstract:
国标法测定乳制品中三聚氰胺含量时,其样品前处理为手工操作,每小时仅能处理1~2个样品。因此,本研究基于流动注射分析技术,将国标法的手工操作变成自动过程,建立了一种可与国标法联用的奶样全自动固相萃取富集系统,每小时可处理至少10个样品,实现了奶样的自动快速处理,并已成功用于三聚氰胺标液及乳制品样的测定。本方法的特点是环境污染小、操作简便、自动化程度高,可作为国标法的补充方法。本方法的线性范围为0.2~50mg/L(r＝0.9993),相对标准偏差小于3.9%,检出限为0.1mg/L,回收率为95.4%~108.0%。
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