电感耦合等离子体原子发射光谱法分析不同产地大豆中的矿物元素含量

选取江西、黑龙江、吉林和安徽4产地同一种属大豆经硝酸湿法消解后，采用电感耦合等离子体原子发射光谱法同时测定了其中K, P, Mg, Ca, Fe,Al, Zn, Mn 和Na元素的含量，并采用Ducan多重比较方法对结果进行统计分析。结果表明：大豆中含有丰富的矿物元素，其中K，P，Mg，Ca，Fe元素含量较高，且排序不因产地的变化而改变。Mn， Zn，Al，Na元素的排序则受产地影响较大。K, P, Mg的含量受产地的影响不大，表现出某一品种大豆自身生长对主要矿物质的需求是相对稳定的。不同产地大豆中Al, Ca，Fe, Na, Mn，Zn元素的含量差异显著(P<0.05)，说明这几种微量元素的含量受土壤及环境的影响较大，其中安徽大豆中的铁元素(70.93 mg·kg-1)和江西大豆中的锰元素(32.69 mg·kg-1)显著高于其他3个样品。

Determination of Mineral Elements in Soybean from Different Producing Areas by ICP-AES

Soybeans from Jiangxi,Heilongjiang,Jilin and Anhui were digested by nitric acid.The contents of mineral elements K,P,Mg,Ca,Fe,Al,Zn,Mn and Na in four samples were analyzed by inductively coupled plasma atomic emission spectrometry(ICP-AES).The differences between samples were determined by Duncan's multiple-range test,and evaluations were based on a significance level of P<0.05.The results show that soybeans are rich in mineral elements that human body needs.The contents of K,P,Mg,Ca and Fe are higher than ...