摘要
采用硝酸–高氯酸湿法消解或硝酸–双氧水微波消解植物样品,以电感耦合等离子体原子发射光谱法同时测定样品溶液中钾、钠、钙和镁含量。用该法测定灌木枝叶和茶叶标准样品,测定值均在标准值范围内,测定结果的相对标准偏差为0.45%~4.05%(n=8)。钾、钠、钙、镁的加标回收率分别为94.4%~107.6%,92.6%~107.9%,93.7%~105.4%,92.9%~107.2%。该方法操作简便,测量精密度和准确度完全满足植物中钾、钠、钙和镁含量的测定要求。
The contents of potassium,sodium,calcium and magnesium in the sample solution were determined by ICP-AES with nitric acid and perchloric acid wet digestion or nitric acid and hydrogen peroxide microwave digestion.Certified reference materials of Shrubs and tea leaves were determined by this method,the measured values were within the allowable error of the standard value,and the relative standard deviations were0.45%-4.05%(n=8).The recoveries of potassium,sodium,calcium and magnesium were94.4%-107.6%,92.6%-107.9%,93.7%-105.4%,92.9%-107.2%,respectively.The method is easy to operate,and it can meet the determination requirement of potassium,sodium,calcium and magnesium in plants with qualified precision and accuracy.
作者
刘泽斌
刘守廷
蒋天成
宋业成
吴婷
黄殿贵
王有兵
王玉清
邓捷
Liu Zebin;Liu Shouting;Jiang Tiancheng;Song Yecheng;Wu Ting;Huang Diangui;Wang Youbing;Wang Yuqing;Deng Jie(Guangxi Station of Radiation Environment Supervision, Nanning 530222, China;Guangxi Center of Analysis and Test Research, Nanning 530022, China;Guangxi University of Chinese Medicine, Nanning 530001, China;Guangxi Guihong Environmental Monitoring Technology Limited Company, Nanning 530021, China)
出处
《化学分析计量》
CAS
2017年第5期23-27,共5页
Chemical Analysis And Meterage
基金
广西壮族自治区直属公益性科研院所基本科研业务费专项(2015ACZ10)
