电感耦合等离子体-质谱法测定3种啤酒花不同部位中的无机元素

Determination of Inorganic Elements in Different Parts of Hop Plant(Humulus lupulus) by Using ICP-MS

使用湿法消解植物啤酒花的根、茎、叶、花等样品,利用电感耦合等离子体-质谱法对样品中Al、Pb、As、Cd、Ba、Ni、Mn、Cu、Sr、Co、Cr、Zn、Li、V 14种无机元素含量进行分析。结果表明,该方法分析啤酒花中矿物元素准确、可靠,所有元素的回归方程线性均大于0.999,对各元素的3倍信噪比检出限为0.12~2.16μg/L,精密度相对标准偏差均小于5%,加标回收率在87.35%~106.88%之间。对扎一、马可波罗、青岛大花3个品种啤酒花不同部位无机元素的分析结果表明,各种无机元素在不同品种酒花中的含量无显著差异,并验证了酒花生长过程中的各种矿物元素在植株内的分布。

A method based on wet digestion and inductively coupled plasma-mass spectrometry(ICP-MS) was established for simultaneous determination of fourteen inorganic elements(Al, Pb, As, Cd, Ba, Ni, Mn, Cu, Sr, Co, Cr, Zn, Li, and V) in different parts of the hop plant(Humulus lupulus). The linear correlative coefficients for all the elements were higher than 0.999, the three multiplied detection limits(3MDLT) were between 0.12 and 2.16?μg/L, and the precision values expressed as relative standard deviations(RSDs) were less than 5%. The spiked recovery rates were between 87.35% and 106.88%. In conclusion, the method was accurate and reliable. As determined by this method, there were no significant differences in the contents of the 14 inorganic elements among 3 hop cultivars(Marco Polo, SA-1 and Tsingdao Flower). This method was used to investigate the distribution of essential elements in different parts of the plant during the growth process.