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Position: Home > Articles > Determination of Melamine in Milk Powder by Flow Injection-Chemiluminescence Combined with Solid Phase Extraction FOOD SCIENCE 2011,32 (10) 199-202

固相萃取-流动注射化学发光法测定奶粉中的三聚氰胺

作  者:
高向阳;郝梅;朱盈蕊
单  位:
河南农业大学食品科学技术学院
关键词:
三聚氰胺;流动注射-化学发光;鲁米诺;高锰酸钾;奶粉
摘  要:
建立一种快速测定奶粉中三聚氰胺的新方法,利用鲁米诺-高锰酸钾化学发光体系,结合流动注射技术,对样品中的微量三聚氰胺进行测定。结果表明:三聚氰胺对鲁米诺-高锰酸钾化学发光体系具有显著的抑制作用,在最佳实验条件下,方法的线性范围为1×10-11~1×10-6mol/L,检出限(3RSN)为4.0×10-8mg/L,RSD为1.1%(n=11),样品加标回收率为96.1%~102.2%,用于奶粉中三聚氰胺含量的测定,结果令人满意。
译  名:
Determination of Melamine in Milk Powder by Flow Injection-Chemiluminescence Combined with Solid Phase Extraction
作  者:
GAO Xiang-yang,HAO Mei,ZHU Ying-rui(College of Food Science and Technology,Henan Agricultural University,Zhengzhou 450002,China)
关键词:
melamine;flow injection-chemiluminescence;luminol;potassium permanganate;milk powder
摘  要:
In order to establish a new method to quickly determine melamine in milk powder,a chemiluminescence(FI-CL) system of luminol and potassium permanganate was coupled with flow injection technology.In the method,the chemilumines-cence(CL) reaction between luminol and potassium permanganate was significantly reduced by melamine.Under the optimal experimental conditions,melamine concentration in the range of 1 × 10-11 to 1 × 10-6 mol/L was linearly proportional to the depression of CL signals.The detection limit was 4.0 × 10-8 mg/L,with a RSD of 1.1% for 11 replicate determinations.The recovery rates for melamine in a certain brand of milk powder were in the range of 96.1% to 102.2%.This method has been successfully applied to the determination of melamine in real milk powder samples.

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