caa a22 4500 465746284 CHVBK 20180323111821.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00331393 doi (NATIONALLICENCE)springer-10.1007/BF00331393 Direct determination of N-nitrosodiethanolamine in triethanolamine with HPLC, ion-exchange chromatography and UV-detection [Elektronische Daten] [B. Büchele, L. Hofmann, J. Lang] Summary: The difference in the pK-values and chemical structure of N-nitrosodiethanolamine and triethanolamine in connection with a clear UV-maximum at 235 nm make possible a direct determination of N-nitrosodiethanolamine in triethanolamine up to 10 ng/ml possible when using an eluent of high optical transparency and a separating column with a high selectivity and reduced internal diameter. Linearity, reproducibility and accuracy meet the requirements to be fulfilled by trace-analytical methods. Springer-Verlag, 1990 Büchele B. Pharmaceutical Development, Stability Laboratory, Heinrich Mack Nachf., D-7918, Illertissen, Federal Republic of Germany aut Hofmann L. Pharmaceutical Development, Stability Laboratory, Heinrich Mack Nachf., D-7918, Illertissen, Federal Republic of Germany aut Lang J. Pharmaceutical Development, Stability Laboratory, Heinrich Mack Nachf., D-7918, Illertissen, Federal Republic of Germany aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 336/4(1990-01-01), 328-332 0937-0633 336:4<328 1990 336 216 https://doi.org/10.1007/BF00331393 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00331393 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Büchele B. Pharmaceutical Development, Stability Laboratory, Heinrich Mack Nachf., D-7918, Illertissen, Federal Republic of Germany aut NATIONALLICENCE 700 1- Hofmann L. Pharmaceutical Development, Stability Laboratory, Heinrich Mack Nachf., D-7918, Illertissen, Federal Republic of Germany aut NATIONALLICENCE 700 1- Lang J. Pharmaceutical Development, Stability Laboratory, Heinrich Mack Nachf., D-7918, Illertissen, Federal Republic of Germany aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 336/4(1990-01-01), 328-332 0937-0633 336:4<328 1990 336 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer