摘要
建立微波消解-电感耦合等离子体质谱(ICP-MS)法同时测定肉苁蓉及其饮片中锶、铬、钴、镍、铜、锌、铅等7种无机元素含量的方法。以硝酸-高氯酸-氢氟酸为消解体系对样品进行微波消解,采用ICP-MS法同时测定。方法学验证表明:7种元素均在0~500μg/L的质量浓度范围内线性关系良好(r^(2)>0.999);检出限在0.0031~0.0720μg/L;低、中、高3种浓度水平,7种元素的平均回收率(n=3)在93.75%~105.0%之间,重复性RSD(n=6)在1.2%~3.4%之间。结果表明,肉苁蓉确为一种矿质元素含量丰富且安全性较好的药品及功能保健食品(原料);其中肉苁蓉药材:Sr>Cu>Ni>Pb>Co>Cr>Zn;肉苁蓉饮片:Sr>Zn>Cu>Pb>Ni>Co>Cr;可见肉苁蓉经过加工处理成饮片,其无机元素含量变化比较大。为肉苁蓉的综合质量评价、营养价值评价、制药工艺及科学合理施肥等提供一定参考。
To establish a method for simultaneous determination of 7 inorganic elements including Sr、Co、Cr、Ni、Cu、Zn、Pb in Cistanche deserticola and its medicine decoction pieces by inductively coupled plasma mass spectrometry(ICP-MS).Us⁃ing HNO3-HClO4-HF as digestion system for microwave-assisted digestion,the 7 inorganic elements concentrations were simultaneously by ICP-MS.The methodology study result showed that the linear relationship of these 7 elements in the rangs of 0~500μg/L abstained good results,and the linear correlation coefficients were greater than 0.999,the detection limits were in the range of 0.0031~0.0720μg/L,the average recovery(n=3)of the 7 elements ranged from 93.75%to 105.0%at low,medium and high concentrations;the repeatability RSD(n=6)ranged from 1.2%to 3.4%.The results show that Cistanche deserticola is indeed a kind of medicine and functional health food(raw material)with rich mineral elements and good safety.Cistanche deserticola:Sr>Cu>Ni>Pb>Co>Cr>Zn;medicine decoction pieces:Sr>Zn>Cu>Pb>Ni>Co>Cr;it can be seen that cistanche deserticola was processed into decoction pieces,and the content of inorganic elements changed greatly.It provides some reference for the comprehensive quality evaluation,nutritional value evaluation,pharmaceutical tech⁃nology and scientific and rational fertilization of Cistanche deserticola.
作者
任小娜
张春
吴鹏
张春玲
王华
Ren Xiao-na;Zhang Chun;Wu Peng;Zhang Chun-ling;Wang Hu(Jiuquan Vocational Technical College Institute of chemical industry,Jiu Quan,Gansu 735000,China;Lanzhou Jiaotong University School of Chemical and Biological Engineering,LanZhou,Gansu 730070,China;Jiuquan Testing Center of Northwest Geological Exploration Institute of Metallurgical Geology of China,Jiu Quan,Gansu 735000,China)
出处
《福建分析测试》
CAS
2021年第2期50-55,共6页
Fujian Analysis & Testing
