电感耦合等离子体质谱法测定不同产地莲子心中19种金属元素及其主成分分析

Determination and principal component analysis on 19 kinds of metal elements in Nelumbo nucifere Gaertn. from different origins by inductively coupled plasma-mass spectrometry

中文关键词:  莲子心  金属元素  主成分分析  电感耦合等离子体质谱

英文关键词:Nelumbo nucifere Gaertn.  metal elements  principal component analysis  inductively coupled plasma-mass spectrometry

中文摘要:

      目的 建立莲子心19种金属元素的电感耦合等离子体质谱法(inductively coupled plasma-mass spectrometry, ICP-MS)的分析方法, 并对不同产地莲子心金属元素含量进行比较分析。方法 莲子心样品经微波消解, 采用ICP-MS测定金属元素含量, 并绘制金属元素指纹图谱, 采用SPSS 26.0对金属元素含量进行主成分分析。结果 莲子心19种金属元素指纹图谱具有一定的特征性; 有害金属元素含量应引起关注。主成分分析筛选出8个主因子, 得出B、S、Ca、Mn、Fe、Zn、Sr、Sb、Ba、As、Pb是莲子心的特征金属元素; 与主成分分析结果呈正相关的元素相关性从大到小依次为Pb、As、Ba、Zn、Sb、Mg、Cd、K、S、B、Na、Hg、Cu、Fe、Ni; 呈负相关的元素相关性从大到小依次为Sr、Mn、Ca、Mo。结论 该方法快速、准确、灵敏度高, 适用于测定莲子心多种金属元素含量的同时测定, 为莲子心的质量控制及安全性评价提供依据。

英文摘要:

      Objective To establish a method for the analysis of 19 kinds of metal elements in Nelumbo nucifere Gaertn. by inductively coupled plasma-mass spectrometry (ICP-MS), and to compare and analyze the metal elements content from different areas. Methods The Nelumbo nucifere Gaertn. sample was digested by microwave, and the metal elements content was determined by ICP-MS. The metal element fingerprint was drawn, and principal component analysis was performed on the metal element content using SPSS 26.0 software. Results The fingerprint of 19 kinds of metal elements in the Nelumbo nucifere Gaertn. had certain characteristics, and the content of harmful metal elements should be of concerned. Principal component analysis identified 8 main factors and identified B, S, Ca, Mn, Fe, Zn, Sr, Sb, Ba, As, and Pb as characteristic metal elements for Nelumbo nucifere Gaertn.. The correlation of 19 kinds of metal elements with the comprehensive score value of principal component analysis that were positively correlated in decreasing order were as follows: Pb, As, Ba, Zn, Sb, Mg, Cd, K, S, B, Na, Hg, Cu, Fe, Ni, and negatively correlated correlated in decreasing order were as follows: Sr, Mn, Ca, Mo. Conclusion The method is rapid, accurate and sensitive, and can be used for the simultaneous determination of the content of various metal elements in Nelumbo nucifere Gaertn.. It provides the basis for the quality control and safety evaluation of Nelumbo nucifere Gaertn..