【摘要】 采用电感耦合等离子体-质谱(ICP-MS)法测定了湖北省长阳县乐园镇产开口箭根茎中27中金属元素的含量。其中13中金属元素V、Cr、Mn、Fe、Cu、Zn、As、Se、Mo、Ag、Cd、Tl、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0.164%—9.933%,加标回收介于90.0%—110.0%之间。更多还原

【Abstract】 The twenty seven metal elements in rhizome of Tupistra chinensis Bak.from Leyuan, Changyang were determined by ICP-MS.Among them,thirteen metal elements V,Cr,Mn,Fe,Cu, Zn,As,Se,Mo,Ag,Cd,Tl,Pb were determined through normal method,and the other fourteen such as Li,Be,B,Mg,Al,Co,Ni,Ga,Rb,Sr,Te,Ba,Bi and U were determined with the collision/reaction cell technology for the elimination of potential interference.Under the experiment conditions,eight elements Co,Ni,Cr,Zn,Se,Mo,Ag,Pb were not detected.The detection limits were as follows: 9.789ng/mL for Fe,2.691ng/mL for Cr,l.803ng/mL for Zn,2.076ng/mL for B,1.977ng/mL for Mg,3.024ng/mL for Al,1.824ng/mL for Ni,and those for the other elements were between 0.003 and 0.921ng/mL.The RSDs for precision were among 0.164%to 9.933%with good recoveries of 90%—110%.更多还原