微波消解-电感耦合等离子体光谱法测定铝塑包装奶粉中铝的含量  

Determination of aluminum content in milk powder packaged with aluminum-plastic by microwave digestion-inductively coupled plasma emission spectrometry

作　　者：王蕴馨[1] 李青[1] 郭金芝[1] 王博[1] 张冠英[1] 

机构地区：[1]吉林省疾病预防控制中心,长春130062

出　　处：《食品安全质量检测学报》2016年第1期65-68,共4页Journal of Food Safety and Quality

摘　　要：目的建立一种微波消解-电感耦合等离子体光谱仪器测定铝塑包装奶粉中铝的含量的方法。方法样品经微波消解并赶酸,采用电感耦合等离子体光谱（inductively coupled plasma emission spectrometry,ICP-AES）检测方法上机,通过样品中铝的信号强度和浓度成正比,对34种铝塑包装奶粉中的铝含量进行测定。结果该方法检出限为0.72 mg/kg,线性相关系数为0.9998,加标回收率为95.4%~98.6%。检测的34种铝塑包装奶粉中铝的残留量较少,均在低于0.72~1.28 mg/kg之间。结论该方法简便、快速、准确、所需样品量少,为奶粉的质量安全提供了技术保证。Objective To establish a method for the determination of aluminum content in milk powder packaged with aluminum-plastic by microwave digestion-inductively coupled plasma emission spectrometry. Methods Thirty-four aluminum-plastic packaged milk powder samples were digested by microwave oven. Aluminum in aluminum-plastic packaged milk powder was detected by inductively coupled plasma emission spectrometry （ICP-AES） and the signal was in proportion to the concentration of aluminum in samples. Results The detection limit was 0.72 mg/kg and the linear correlation coefficient was 0.9998 with the good recovery in the range of 95.4%-98.6%. Aluminum in 34 aluminum-plastic packaged milk powder samples was less with the range of less than 0.72 to 1.28 mg/kg. Conclusion The established method is simple, rapid, accuracy, and requires a few samples, providing technical guarantee for the safety of milk powder.

关 键 词：电感耦合等离子体光谱法 铝 铝塑包装奶粉 

分 类 号：O657.31[理学—分析化学] TS252.51[理学—化学]