caa a22 4500 46574608X CHVBK 20180323111821.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00331424 doi (NATIONALLICENCE)springer-10.1007/BF00331424 Application of differential pulse polarography for trace determination of polycytidylic acid in absence and presence of some metal ions [Elektronische Daten] [Y. Temerk, M. Kamal, Z. Ahmed, M. Ibrahim] Summary: A differential pulse polarographic method has been applied to the determination of trace concentrations of polycytidylic acid (Poly-C) in absence and presence of metal ions. The applicability of differential pulse polarography for the trace determination of the investigated biological compound was examined with regard to the dependence of differential pulse current on various parameters such as pH, pulse amplitude, scan rate and drop time. The selectivity of this technique for the determination of binary and a ternary mixtures of poly-C and some metal ions has been also reported. Limits of detection and quantitation have been calculated for the differential pulse polarographic determination of the poly-C and various metal ions. The validity of this method is supported by the constancy of the ip/C values and a statistical analysis is included on calibration curve parameters and observed concentration. Springer-Verlag, 1990 Temerk Y. Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt aut Kamal M. Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt aut Ahmed Z. Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt aut Ibrahim M. Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 336/7(1990-01-01), 589-592 0937-0633 336:7<589 1990 336 216 https://doi.org/10.1007/BF00331424 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00331424 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Temerk Y. Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt aut NATIONALLICENCE 700 1- Kamal M. Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt aut NATIONALLICENCE 700 1- Ahmed Z. Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt aut NATIONALLICENCE 700 1- Ibrahim M. Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 336/7(1990-01-01), 589-592 0937-0633 336:7<589 1990 336 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer