摘要
构建了基于超级微波消解与电感耦合等离子体发射光谱检测技术,测定食糖中钙、铁、钾、镁、锰、钠、磷、锌8种营养元素含量的方法。通过优化消解体系与最高消解温度,保证了食糖样品的消解完全。通过观测方式优化及分析谱线优选提高了电感耦合等离子体发射光谱法测定8种目标元素的灵敏度与抗干扰能力。为了考察方法的精密度和准确性,进行3种食糖加标回收实验及重复性实验。方法验证表明,各元素标准曲线相关系数均超过0.9997,方法检出限在0.0059~2.5384 mg/kg之间,3类食糖样品8种目标元素的加标回收率在90.84%~103.61%之间,白砂糖加标样品的8种营养元素的重复测定RSD值控制在1.1%~2.5%之间。该方法简便、快捷、准确、高效、稳定,可以满足日常中所有种类食糖8种营养元素的检测需求。
A method for the determination of 8 nutritive elements in sugar,including Ca,Fe,K,Mg,Mn,Na,P,Zn,was developed based on the technology of super microwave digestion-inductively coupled plasma emission spectrometry.The digestion system and the maximum digestion temperature were optimized to ensure the complete digestion of sugar samples.The sensitivity and anti-interference ability of the inductively coupled plasma emission spectrometry for the determination of 8 target elements were improved through the optimization of observation methods and the optimization of analytical spectral lines.In order to investigate the precision and accuracy of the method,3 kinds of sugar labeling recovery experiments and repeatability experiments were carried out.The results showed that the correlation coefficients of the standard curves of all elements were more than 0.9997,the detection limits of the method were 0.0059~2.5384 mg/kg,and the recoveries of 8 target elements were 90.84%~103.61%.The RSD values of 8 nutrient elements in white granulated sugar samples were controlled between 1.1%and 2.5%.The method is simple,fast,accurate,efficient and stable,and can meet the daily requirements of all kinds of sugar 8 nutritive elements detection.
作者
余健斌
钟艺维
钟宏星
辜秋如
郭汶彬
陆剑华
YU Jianbin;ZHONG Yiwei;ZHONG Hongxing;GU Qiuru;GUO Wenbin;LU Jianhua(Institute of Biological and Medical Engineering,Guangdong Academy of Sciences,Guangzhou 510316,Guangdong,China;Engineering Technology Research Center of Sugarcane Industry,China National Light Industry Council,Guangzhou 510316,Guangdong,China)
出处
《甘蔗糖业》
2025年第3期102-109,共8页
Sugarcane and Canesugar
基金
广州市2024年度基础与应用基础研究专题(2024A04J3444)。
关键词
食糖
营养元素
超级微波消解
电感耦合等离子体发射光谱法
Sugar
Nutritive elements
Super microwave digestion
Inductively coupled plasma emission spectrometry
