摘要
建立能量色散X射线荧光(EDXRF)光谱法快速检测干木耳中铁的新方法。将干木耳样品粉碎,装入样品杯,经EDXRF扫描,通过铁的Kα荧光谱线进行识别,外标法进行定量。结果显示,在考察质量分数范围(20~310mg/100 g)内,方法线性良好(R^(2)=0.999 4),定量下限为1.73 mg/100 g,加标回收率为98.71%~101.4%,相对标准偏差为0.28%~1.07%。该方法简便、快速、无污染、定量可靠,能满足木耳质量评价中铁含量快速检测的需要。
A new method for the rapid detection of iron element in dry fungus was established by energy dispersive X-ray fluorescence(EDXRF)spectroscopy.After crushing,the sample was loaded into the sample cup and scanned by EDXRF.The target element was identified by the Ka fluorescence spectral line and the quantification was performed by external standard method.The results showed that in the concentration range(20-310 mg/100 g),the method linearity was good(R^(2)=0.9994),the lower limit of quantification was 1.73 mg/100 g,and the recoveries were 98.71%-101.4%with relative standard deviation from 0.28%-1.07%.The method was simple,rapid,pollution-free,quantitative and reliable,which could meet the needs of rapid detection of iron content in fungus quality evaluation.
作者
赵泽宇
张欣然
王宗义
王雨萱
刘明博
严国富
ZHAO Zeyu;ZHANG Xinran;WANG Zongyi;WANG Yuxuan;LIU Mingbo;YAN Guofu(Beijing University of Agriculture,College of Food Science and Engineering/Beijing Laboratory of Food Quality and Safety/Beijing Key Laboratory of Harmful Microorganisms and Pesticide Safety Detection and Control of Agricultural Products,Beijing 102206;Steel Yanak Testing Technology Co.,Ltd.,Beijing 100081;Beijing Leili Balanced Agricultural Development Co.,Ltd.,Beijing 101407)
出处
《食品工业》
CAS
2023年第9期290-293,共4页
The Food Industry
基金
首都科技创新券项目(2020)
北京农学院大学生科研训练项目(2022)。
关键词
铁
能量色散X射线荧光
干木耳
快速检测
iron
energy-dispersive X-ray fluorescence
dried fungus
rapid detection
