TY  - JOUR
AU  - Marković, Bojan
AU  - Ignjatović, Janko
AU  - Vujadinović, Mirjana
AU  - Savić, Vedrana
AU  - Vladimirov, Sote
AU  - Karljiković-Rajić, Katarina
PY  - 2015
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2323
AB  - Inter-laboratory verification of European pharmacopoeia (EP) monograph on derivative spectrophotometry (DS) method and its application for chitosan hydrochloride was carried out on two generation of instruments (earlier GBC Cintra 20 and current technology TS Evolution 300). Instruments operate with different versions of Savitzky-Golay algorithm and modes of generating digital derivative spectra. For resolution power parameter, defined as the amplitude ratio A/B in DS method EP monograph, comparable results were obtained only with algorithm's parameters smoothing points (SP) 7 and the 2nd degree polynomial and those provided corresponding data with other two modes on TS Evolution 300 Medium digital indirect and Medium digital direct. Using quoted algorithm's parameters, the differences in percentages between the amplitude ratio A/B averages, were within accepted criteria (+/- 13%) for assay of drug product for method transfer. The deviation of 1.76% for the degree of deacetylation assessment of chitosan hydrochloride, determined on two instruments, (amplitude D-1(202); the 2nd degree polynomial and SP 9 in Savitzky-Golay algorithm), was acceptable, since it was within allowed criteria (+/- 2%) for assay deviation of drug substance, for method transfer in pharmaceutical analyses.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Spectroscopy Letters
T1  - Inter-laboratory verification of European pharmacopoeia monograph on derivative spectrophotometry method and its application for chitosan hydrochloride
VL  - 150
SP  - 792
EP  - 798
DO  - 10.1016/j.saa.2015.06.022
ER  - 

@article{
author = "Marković, Bojan and Ignjatović, Janko and Vujadinović, Mirjana and Savić, Vedrana and Vladimirov, Sote and Karljiković-Rajić, Katarina",
year = "2015",
abstract = "Inter-laboratory verification of European pharmacopoeia (EP) monograph on derivative spectrophotometry (DS) method and its application for chitosan hydrochloride was carried out on two generation of instruments (earlier GBC Cintra 20 and current technology TS Evolution 300). Instruments operate with different versions of Savitzky-Golay algorithm and modes of generating digital derivative spectra. For resolution power parameter, defined as the amplitude ratio A/B in DS method EP monograph, comparable results were obtained only with algorithm's parameters smoothing points (SP) 7 and the 2nd degree polynomial and those provided corresponding data with other two modes on TS Evolution 300 Medium digital indirect and Medium digital direct. Using quoted algorithm's parameters, the differences in percentages between the amplitude ratio A/B averages, were within accepted criteria (+/- 13%) for assay of drug product for method transfer. The deviation of 1.76% for the degree of deacetylation assessment of chitosan hydrochloride, determined on two instruments, (amplitude D-1(202); the 2nd degree polynomial and SP 9 in Savitzky-Golay algorithm), was acceptable, since it was within allowed criteria (+/- 2%) for assay deviation of drug substance, for method transfer in pharmaceutical analyses.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Spectroscopy Letters",
title = "Inter-laboratory verification of European pharmacopoeia monograph on derivative spectrophotometry method and its application for chitosan hydrochloride",
volume = "150",
pages = "792-798",
doi = "10.1016/j.saa.2015.06.022"
}

Marković, B., Ignjatović, J., Vujadinović, M., Savić, V., Vladimirov, S.,& Karljiković-Rajić, K.. (2015). Inter-laboratory verification of European pharmacopoeia monograph on derivative spectrophotometry method and its application for chitosan hydrochloride. in Spectroscopy Letters
Pergamon-Elsevier Science Ltd, Oxford., 150, 792-798.
https://doi.org/10.1016/j.saa.2015.06.022

Marković B, Ignjatović J, Vujadinović M, Savić V, Vladimirov S, Karljiković-Rajić K. Inter-laboratory verification of European pharmacopoeia monograph on derivative spectrophotometry method and its application for chitosan hydrochloride. in Spectroscopy Letters. 2015;150:792-798.
doi:10.1016/j.saa.2015.06.022 .

Marković, Bojan, Ignjatović, Janko, Vujadinović, Mirjana, Savić, Vedrana, Vladimirov, Sote, Karljiković-Rajić, Katarina, "Inter-laboratory verification of European pharmacopoeia monograph on derivative spectrophotometry method and its application for chitosan hydrochloride" in Spectroscopy Letters, 150 (2015):792-798,
https://doi.org/10.1016/j.saa.2015.06.022 . .