TSETV的研制及其与AES联用技术研究

TSETV的研制及其与AES联用技术研究 STUDY ON DEVICE OF TSETV FOR INTRODUCTION INTO AES 廖振环 1 first-author 梅二文 1 江祖成 1 武汉大学化学系 武汉大学化学系 Department of Chemistry, Wuhan University Department of Chemistry, Wuhan University 提出了一种简单、有效的微进样装置──钨丝电热蒸发进样装置（ＴＳＥＴＶ），并把该装置与电感耦合等离子体发射光谱（ＩＣＰ－ＡＥＳ）及直流电弧发射光谱（ＤＣ－ＡＥＳ）联用．对该装置本身及与其ＩＣＰ－ＡＥＳ，ＤＣ－ＡＥＳ的联用技术、分折性能作了详细研究．用ＴＳＥＴＶ－ＤＣ系统得到了Ｎｉ，Ｃｏ，Ｃｕ，Ｍｎ，Ｃｒ和Ｍｇ的检出限为１０－８～１０－１０ｇ（１０μＬ进样），相对标准偏差明显优于常规ＤＣ系统．并用该法分析了纯ＮａＣｌ中痕量Ｃｕ及水样中Ｃｕ，Ｆｅ，Ｍｎ，所得结果同ＩＣＰ－ＡＥＳ及石墨炉原子吸收（ＧＦ－ＡＡＳ）所得结果相吻合．用ＴＳＥＴＶ－ＩＣＰ系统得到了Ｍｇ，Ｃｕ，Ｍｎ，Ｃｒ，Ｆｅ，Ｃｏ，Ｎｉ，Ｌａ，Ｎｄ，Ｇｄ，Ｄｙ，Ｙｂ，Ｌｕ和Ｙ的检出限为１０－９～１０－１１ｇ（１０μＬ进样），相对标准偏差低于６％．并用该方法分析了白酒及大米中痕量Ｃｕ，Ｍｎ及江西稀土矿区谷物样品中痕量稀土元素，结果满意．实验表明，ＴＳＥＴＶ具有操作方便，进样量小，能把试样的蒸发和激发过程分开的优点． A simple, efficient device for introduction sample into ICP-AES and DC-AESwith tungsten spiral electrothermal vaporization （TSETV） was described. Some factors concerning about the device itself,the technique of connecting the device with ICP and DC andthe analytical ability of this method were investigated in detail. With TSETV-DC-AES,thedetect limits of Ni,Co,Cu,Mn,Cr and Mg were obtained in the range of 10-8～10-10g for 10μL sample. The precision of this technique is obviously better than conventional DC-AES.With TSETV-DC-AES,trace amount of Cu in the sodium chloride reagent and trace amountof Cu,Fe and Mn in tap water were determined and the results is agreeable with that obtained by ICP-AES and GF-AAS. With TSETV-ICP-AES,the detect limits of Mg,Cu, Mn,Cr Fe,Co, Ni and eight rare earth elements （REE） of La,Nd,Gd,Dy,Ho, Yb,Lu and Y weregained between 10-9～10-10g for 10μL sample. The ralative standard deviation was below6%. With TSETV-ICP-AES,trace amount of Cu and Mn in white alcoholic drink and common rice were determined and the results are con,istent with that determined by GF-AAS.The method was also applied to determine trace amount of REE in grain sample in JiangxiRE-mineral area. Experimental results show the advantages of micro-volume sample introdution （10μL）,easy operation,low cost and separating the proceed of vaporization and excitingof the method. TSETV进样 ICP－AES DC－AES 痕量Cu Mn 痕量稀土元素 谷物 tungsten spiral electrothermal vaporization ICP-AES DC-AES Cu Mn REE grain O657.31 1996-02-01 2021-04-01 2