Summary
The coupling is described of coulometric separation methods with an ion exchange separation step. Various methods of enrichment and separation are described using the analysis of nitrogen compounds, such as ammonia, urea and nitrite, as examples. A microcomputer controls the separation step and regulates the coulometric determination. Quantitative separations are achieved in all cases, so that the advantage of coulometric titration, as a precise absolute determination method, is retained.
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Rüttinger HH, Spohn U (1987) Anal Chim Acta 202:75
Spohn U, Hahn M, Rüttinger HH, Matschiner H (1989) Fresenius Z Anal Chem 333:39
Spohn U, Hahn M, Rüttinger HH, Matschiner H (1989) Galvanotechnik 80:973
Matschiner H, Rüttinger HH (1987) Feingerätetechnik 36:170
Hahn M, Schiede H (1988) unveröffentlichte Ergebnisse
Hahn M, Rüttinger HH, Matschiner H, Lenk N (1991) Fresenius J Anal Chem 340:22
Spohn U, Hahn M, Matschiner H, Ehlers G, Berge H (1989) Fresenius Z Anal Chem 332:849
Hahn M, Rüttinger HH, Matschiner H (1992) Fresenius J Anal Chem 343:269
Hoffman HJ, Röhl (1985) LaborPraxis 9:330
Schnitzler M (1986) LaborPraxis 10:214
Essing A, Umland F (1989) Fresenius Z Anal Chem 335:826
Sontheimer H, Schnitzler M (1982) Vom Wasser 59:169
Hahn M, Rüttinger HH, Matschiner H (1991) Z Wasser-Abwasser-Forsch 24:191
Essing A, Umland F (1986) Fresenius Z Anal Chem 325:8
Bidlo Z, Berger T, Gruntz U (1989) Vom Wasser 73:1
Hahn M, Rüttinger HH, Matschiner H (1991) Z Wasser-Abwasser-Forsch 24:188
Weiß J (1991) Ionenchromatographie. VCH, Weinheim New York Basel Cambridge
Haddad PR, Jackson PE (1990) Ion chromatography. J Chromatogr lib. vol. 46. Elsevier, Amsterdam Oxford New York Tokyo
Fang Z, Ruzicka J, Hansen EH (1984) Anal Chim Acta 164:23
Fang Z, Xu S, Zhang S (1984) Anal Chim Acta 164:41
Hirata S, Honda K, Kumamaru T (1989) Anal Chim Acta 221:65
Ruzicka J, Hansen EH (1988) Flow injection analysis. Wiley, New York
Valcarcel M, Luque de Castro MD (1987) J Chromatogr 393:3
Luque de Castro MD (1989) Talanta 36:591
Faizullah AT, Townshend A (1986) Anal Chim Acta 179:233
Bergamin FH, Reis BF, Jacintho AO, Zagatto EAG (1980) Anal Chim Acta 117:81
Schulze G, Liu CY, Brodowski M, Elsholz O, Frenzel W, Moeller J (1988) Anal Chim Acta 214:121
Fang Z, Zhu Z, Zhang S, Xu S, Guo L, Sun L (1988) Anal Chim Acta 214:41
Sohrin Y, Isshiki K, Nakayama E, Kihara S, Matsui M (1989) Anal Chim Acta 218:25
Schulze G, Elsholz O (1989) Fresenius Z Anal Chem 335:721
Karlsson M, Persson JA, Moeller J (1991) Anal Chim Acta 244:109
Hajos P, Inczedy J (1980) J Chromatogr 201:193
Barikov VG, Songina OA, Sereda TG (1972) Zavodsk Lab 38:641
Krivis AF, Supp GR, Gaza FS (1963) Anal Chem 35:2216
Spohn U (1987) Dissertation, Universität Halle
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Hahn, M., Voigt, C., Rüttinger, H.H. et al. Coulometric titrations with an ion exchange separation step. Fresenius J Anal Chem 344, 311–315 (1992). https://doi.org/10.1007/BF00321838
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DOI: https://doi.org/10.1007/BF00321838