Flow Injection-Inductively Coupled Plasma Spectrometry: A New Strategy for Ultratrace Analysis

Journal of research of the National Bureau of Standards Pub Date : 1988-05-01 DOI:10.6028/jres.093.119

C. Mcleod, Y. Zhang, I. Cook, A. Cox, A. R. Date, Y. Y. Cheung

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引用次数: 8

Abstract

[I] Snelleman, W., Rains, T. C., Yee, K. W., Cook, H. D., and Menis, O., Anal. Chem. 42, 394 (1970). [2] Epstein, M. S., and O'Haver, T. C., Spectrochim. Acta 30B, 135 (1975). [3] Epstein, M. S., and Winefordner, J. D., Prog. Analyt. Atom. Spectrosc. 7, 67 (1984). [4] McLeod, C. W., Cook, 1. G., Worsfold, P. J., Davies, J. E., and Queny, J., Spectrochim. Acta 40B, 57 (1985). [5] Cook, 1. G., McLeod, C. W., and Worsfold, P. J., Anal. Proc. 23, 5 (1986). [6] Deardorff, E. R., Private Communication, National Bureau of Standards, March 1981. [7] Smith, M. V., and Burke, R. W., Private Communication, National Bureau of Standards, August 1987. [8] Wittman, A., and Schuster, L., Spectrochim. Acta 42B, 413 (1987). [2,3]. In the experiment relatively large volumes of sample are passed through a microcolumn in the flow injection (FI) manifold and retained analytes are subsequently eluted by injection of a small volume of eluent. Activated alumina offers a novel route for analyte preconcentration since it can function both as an anion and a cation exchanger depending upon solution pH. Under acidic and basic conditions alumina exhibits a high affinity for oxyanions and cations, respectively:

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流动注射-电感耦合等离子体光谱法:超痕量分析的新策略

[I] Snelleman，W.、Rains，T.C.、Yee，K.W.、Cook，H.D.和Menis，O.，Anal。化学。42394（1970）中描述的。[2] Epstein，M.S.和O'Haver，T.C.，Spectrochim。Acta 30B，135（1975）。[3] Epstein，M.S.和Winefordner，J.D.，Prog。Analyt。原子Spectrosc。7，67（1984）。[4] 麦克劳德，C.W.，库克，1。G.，Worsfold，P.J.，Davies，J.E.和Queny，J.，Spectrochim。Acta 40B，57（1985）。[5] 库克，1。G.，McLeod，C.W.和Worsfold，P.J.，分析。Proc。23，5（1986）。[6] Deardorff，E.R.，《私人通信》，国家标准局，1981年3月。[7] Smith，M.V.和Burke，R.W.，《私人通信》，国家标准局，1987年8月。[8] Wittman，A.和Schuster，L.，Spectrochim。Acta 42B，413（1987）。[2,3]。在实验中，相对大体积的样品通过流动注射（FI）歧管中的微柱，随后通过注射小体积的洗脱液洗脱保留的分析物。活性氧化铝为分析物的预富集提供了一种新的途径，因为它可以根据溶液pH同时作为阴离子和阳离子交换剂。在酸性和碱性条件下，氧化铝分别对含氧阴离子和阳离子表现出高亲和力：

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Journal of research of the National Bureau of Standards

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