能量色散X射线荧光光谱法快速检测配方乳粉中的铁和锌  

Rapid Determination of Iron and Zinc in Formula Milk Powder by Energy Dispersive X-ray Fluorescence Spectrometry

作　　者：陈锡 吴建欣 王宗义 严国富 刘明博 廖学亮 赵修平 高婧怡 CHEN Xi;WU Jianxin;WANG Zongyi;YAN Guofu;LIU Mingbo;LIAO Xueliang;ZHAO Xiuping;GAO Jingyi(Beijing Laboratory of Food Quality and Safety,Beijing Key Laboratory of Agricultural Product Detection and Control for Spoilage Organisms and Pesticides,College of Food Sciences and Engineering,Beijing University of Agriculture,Beijing 102206;Beijing Leili Balanced Agricultural Development Co.,LTD.,Beijing 101407;Steel Yanak Testing Technology Co.,LTD.,Beijing 100081)

机构地区：[1]北京农学院食品科学与工程学院/食品质量与安全北京实验室/农产品有害微生物及农残安全检测与控制北京市重点实验室,北京102206 [2]北京雷力平衡农业发展有限公司,北京101407 [3]钢研纳克检测技术股份有限公司,北京100081

出　　处：《中国乳业》2022年第8期60-64,69,共6页China Dairy

基　　金：北京市科技创新券(2021)资助项目。

摘　　要：[目的]建立能量色散X射线荧光(ED-XRF)光谱快速检测配方乳粉中铁和锌的新方法。[方法]乳粉样品用70~100°C去离子水调成浆状,经ED-XFR扫描,标准加入法进行定量。[结果]在考察的浓度范围内,方法线性良好,R2>0.999,铁、锌的定量下限分别为5.90 mg/kg和3.43 mg/kg,加标回收率分别为98.88%~102.7%和99.66%~102.9%,相对标准偏差分别0.38%~1.12%和0.22%~0.75%。[结论]该方法样品处理简单,定量快速、准确,为使用ED-XRF光谱技术进行配方乳粉的质量控制与监测提供了有价值的借鉴。Objective:A new method for rapid determination of iron and zinc in formula milk powder by energy dispersive X-ray fluorescence(ED-XRF)spectroscopy was established.Methods:The powder samples were made into slurry with 70~100℃deionized water,scanned by ED-XFR,and quantified by standard addition method.Results:Good linearity of the method was obtained and the correlation coefficient was greater than 0.999,the lower limit of quantification of iron and zinc were 5.90 mg/kg and 3.43 mg/kg,respectively,the recoveries of iron and zinc were 98.88%~102.74%and 99.66%~102.88%,and their relative standard deviations were 0.38%~1.12%and 0.22%~0.75%,respectively.Conclusion:The method is simple,rapid and accurate,and provides valuable reference for quality control and monitoring of formula milk powder by using ED-XRF spectroscopy.

关 键 词：铁 锌 能量色散X射线荧光 快速检测 

分 类 号：O657.34[理学—分析化学] TS252.51[理学—化学]