ICP-MS法测定金银花花蕾中27种金属元素含量

摘要

采用电感耦合等离子体质谱（ICP—MS）法测定了湖北神农架产金银花花蕾中27种金属元素的含量。其中13种金属元素V、Cr、Mn、Fe、Cu、Zn、As、Se、Mo、Ag、Cd、T1、Pb等采用普通模式检测，14种金属元素Li、Be、B、Mg、Al、Co、Ni、Ga、Rb、Sr、Te、Ba、Bi、U等采用碰撞／反应池技术（CCT）模式测定，以消除样品溶液中潜在的干扰。实验条件下，Co、Ni、Cr、Zn、Se、Mo、Ag、Pb等8种金属元素未检出。方法检出限Fe为9．789ng／mL、Cr为2．691ng／mL，Zn为1．803ng／mL，B为2．076ng／mL，Mg为1．977ng／mL，Al为3．024ng／mL，Ni为1．824ng／mL，其它元素为0．003～0．921ng／mL，精密度的RSD为0．146％～7．627％，加标回收介于90．0％～110．0％之间。%The twenty seven metal elements in flowers of Lonicera japonica from Shennongnjia were determined by ICP-MS. There were fourteen such as Li, Be, B, Mg, A1, Co, Ni, Ga, Rb, Sr, Te, Ba, Bi and U were determined wish the collision/reaction cell technology for the elimination of potential interference. Detection limits for most elements were between 0. 003 and 0. 921ng/mL, and the precision (RSD) was among 0.15 % to 7.63; with good recovery (90;110%) .