基于ICP-MS的不同产地橡胶籽无机元素含量差异分析  

Difference Analysis of Inorganic Elements in Rubber Seeds from Different Producing Areas Based on ICP-MS

作　　者：潘晓威[1] 孙爱娣 潘政 梁耀辉 叶剑芝[1] PAN Xiaowei;SUN Aidi;PAN Zheng;LIANG Yaohui;YE Jianzhi(Agricultural Product Processing Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang,Guangdong 524001,China;Tropical Crop College of Yunnan Agricultural University,Puer,Yunnan 665000,China)

机构地区：[1]中国热带农业科学院农产品加工研究所,广东湛江524001 [2]云南农业大学热带作物学院,云南普洱665000

出　　处：《中国无机分析化学》2023年第10期1130-1137,共8页Chinese Journal of Inorganic Analytical Chemistry

基　　金：海南省自然科学基金资助项目(321QN0927);中央级公益性科研院所基本科研业务费专项项目(1630082022006)。

摘　　要：为进一步拓展农业废弃物——橡胶籽的开发价值,通过微波消解结合电感耦合等离子体质谱仪(ICP-MS)建立了快速分析橡胶籽中16种无机元素的方法,测定了我国六个产地橡胶籽中16种元素的含量,通过无机元素指纹图谱、主成分分析和聚类分析来筛选其特征元素,进行差异性分析。结果表明,各元素线性关系良好(r>0.999),检出限在0.0007~0.53 mg/kg,加标回收率在86.0%~96.3%,精密度符合规定(RSD<10%),所建立的方法可用于橡胶籽中多元素的快速检测;橡胶籽中均含有较丰富的无机元素,Mg含量最高,均在10 g/kg以上;K含量达4000~9122 mg/kg;Ca含量达382~1433 mg/kg;Zn含量在300 mg/kg以上;Ti、Cu、Mn、Ni含量也均在100 mg/kg以上;有害重金属Pb、Cd含量较高,橡胶籽在食用产品开发过程需注意控制。不同产地橡胶籽元素相对含量的变化趋势在一定程度上基本一致,有部分元素的不同产地相对含量存在一定差异。主成分分析选出前4个主成分(Co、V、Cu、Se、Ti、Pb、Cr)的累计方差贡献率为82.69%,得出特征无机元素为Co、V、Cu、Se、Ti、Pb、Cr;聚类分析可将18个橡胶籽样品分为四大类,说明无机元素的含量与环境、地域等因素具有相关性。研究结果可为橡胶籽的开发利用提供研究基础。To further expand the exploitation value of agricultural waste-rubber seeds and to understand the distribution characteristics of inorganic elements in rubber seeds from different origins.In this study,a rapid method for analysis of 16 inorganic elements(Mg,K,Ca,Zn,Ti,Cu,Mn,Ni,Cr,Ba,Co,Cd,Se,Pb,V,and As)in rubber seeds was established by microwave ablation combined with inductively coupled plasma mass spectrometry(ICP-MS),and the method was practically applied to determine the contents of 16 elements in rubber seeds from six origins in China.The fingerprinting,principal component analysis and cluster analysis of inorganic elements were used to screen their characteristic elements and perform the variance analysis.The results showed that the linearity of the elements was good(r>0.999).The detection limits were in the range of 0.0007-0.53 mg/kg,the spiked recoveries were 86.0%-96.3%,and the precision was as specified(RSD<10%).The established method can be used for the rapid determination of multiple elements in rubber seeds.Rubber seeds were all rich in inorganic elements,with the highest Mg content,all above 10 g/kg.K reached 4000-9122 mg/kg,Ca reached 382-1433 mg/kg,and Zn reached more than 300 mg/kg.Ti,Cu,Mn,Ni content were also above 100 mg/kg.The content of harmful heavy metals Pb and Cd was high,which needed to be controlled in the process of using rubber seeds for edible product development.The trends of the relative content of elements in rubber seeds of different origins were basically the same to some extent.There were some differences in the relative contents of some elements from different origins.The cumulative variance contribution of the first four principal components(Co,V,Cu,Se,Ti,Pb and Cr)selected by the principal component analysis was 82.69%.The characteristic inorganic elements were Co,V,Cu,Se,Ti,Pb and Cr.Cluster analysis could classify the 18 rubber seed samples into four major categories,indicating that the content of inorganic elements was correlated with environmental and geographical fac

关 键 词：橡胶籽 产地 电感耦合等离子体质谱法(ICP-MS) 特征元素 

分 类 号：O657.63[理学—分析化学] TH843[理学—化学]