Please use this identifier to cite or link to this item:
Type: Artigo de evento
Title: Sampling Strategies In Sequential Injection Analysis: Exploiting The Monosegmented-flow Approach
Author: Vieira J.A.
Raimundo Jr. I.M.
Reis B.F.
Zagatto E.A.G.
Lima J.L.F.C.
Abstract: An evaluation of different sampling techniques employing sequential injection analysis (SIA) is described. The reaction between Fe(II) and 1,10-phenanthroline, which needs a pH adjustment with acetate buffer and a prior reduction with hydroxylamine solution, was employed. As a general rule, sensitivity, compared to that of the usual SIA technique, can be enhanced with binary sampling, sandwich sampling and monosegmented flow, in that order. Under the employed conditions, signals 13, 31 and 58% higher than those provided by conventional SIA can be obtained with the binary, sandwich and monosegmented sampling, respectively. The monosegmented-flow approach was applied in determining iron in natural waters and results do not differ significantly from those obtained by ICP/AES at the 95% confidence level. The precision was 1.1%, expressed as relative standard deviation obtained by the measurement of nine replicates of 1.0mgl-1 Fe(III) reference solution. Copyright (C) 1998 Elsevier Science B.V.
Rights: fechado
Identifier DOI: 10.1016/S0003-2670(98)00113-5
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
2-s2.0-0032547002.pdf138.94 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.