微波直接提取-电感耦合等离子质谱法测定长沙臭豆腐中铝含量  

Determination of Aluminum in Changsha Stinky Tofu by Inductively Coupled Plasma Mass Spectrometry Assisted with Microwave Direct Extraction

作　　者：张新 戴璇 唐文杰 胡小军 徐文泱 康绍英 贺燕 ZHANG Xin;DAI Xuan;TANG Wenjie;HU Xiaojun;XU Wenyang;KANG Shaoying;HE Yan(Hunan Provincial Institute of Product and Goods Quality Inspection,Changsha 410017,China;Hunan Provincial Key Laboratory of Food Safety Monitoring and Early Warning,Changsha 410017,China)

机构地区：[1]湖南省产商品质量检验研究院,湖南长沙410017 [2]食品安全监测与预警湖南省重点实验室,湖南长沙410017

出　　处：《现代食品》2024年第17期172-174,共3页Modern Food

基　　金：湖南省市场监督管理局科技计划项目(2022KJJH56);湖南省自然科学基金项目(2022JJ90029)。

摘　　要：本文建立微波直接提取-电感耦合等离子质谱法测定长沙臭豆腐中铝含量的方法。通过优化前处理条件,发现微波功率为800 W、提取时间为30 s时试验效果最佳。同时,对方法线性关系、检出限、回收率及精密度进行考察。结果表明,铝质量浓度在0.01~5.00 mg·L^(-1)具有良好的线性关系,线性相关系数大于0.9990,方法检出限为0.42 mg·kg^(-1),加标平均回收率为90.7%~98.2%,相对标准偏差为2.56%~3.60%。该方法提取快速简便,测定结果准确可靠,适用于长沙臭豆腐中铝含量的测定,能够为保障其质量安全提供有效的技术支撑。In this paper,a method for the determination of aluminum in Changsha stinky tofu by microwave direct extraction-inductively coupled plasma mass spectrometry was established.By optimizing the pretreatment conditions,it was found that the microwave power was 800 W and the extraction time was 30 s.At the same time,the linear relationship,detection limit,recovery rate and precision of the method were investigated.The results show that there is a good linear relationship between the aluminum concentration of 0.01 mg·L^(-1) to 5.00 mg·L^(-1),the linear correlation coefficient is greater than 0.9990,the detection limit of the method is 0.42 mg·kg^(-1),the average recovery rate of spiked samples is 90.7%to 98.2%,and the relative standard deviation is 2.56%to 3.60%.This method is rapid,simple,accurate and reliable,which is suitable for the determination of aluminum content in stinky tofu in Changsha,and can provide effective technical support for ensuring its quality and safety.

关 键 词：微波提取 电感耦合等离子质谱法 长沙臭豆腐 

分 类 号：TS207.3[轻工技术与工程—食品科学]