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Estimation of uncertainty from method validation data: application to a reverse-phase high-performance liquid chromatography method for the determination of amino acids in gelatin using 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate reagent


Citation

Mohd Ismail, Azilawati and Mat Hashim, Dzulkifly and Bakar, Jamilah and Mustafa, Shuhaimi and Ismail, Amin (2016) Estimation of uncertainty from method validation data: application to a reverse-phase high-performance liquid chromatography method for the determination of amino acids in gelatin using 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate reagent. Journal of Pharmaceutical and Biomedical Analysis, 129. pp. 389-397. ISSN 0731-7085; ESSN: 1873-264X

Abstract

A detailed procedure for estimating uncertainty according to the Laboratory of Government Chemists/Valid Analytical Measurement (LGC/VAM) protocol for determination of 18 amino acids in gelatin is proposed. The expanded uncertainty was estimated using mainly the method validation data (precision and trueness). Other sources of uncertainties were contributed by components in standard preparation measurements. The method scope covered a single matrix (gelatin) under a wide range of analyte concentrations. The uncertainty of method precision, μ(P) was 0.0237–0.1128 pmol μl−1 in which hydroxyproline and histidine represented the lowest and highest values of uncertainties, respectively. Proline and phenylalanine represented the lowest and highest uncertainties value for method recovery, μ(R) that was estimated within 0.0064–0.0995 pmol μl−1. The uncertainties from other sources, μ(Std) were 0.0325, 0.0428 and 0.0413 pmol μl−1 that were contributed by hydroxyproline, other amino acids and cystine, respectively. Hydroxyproline and phenylalanine represented the lowest and highest values of expanded uncertainty, U(y) that were determined at 0.0949 and 0.2473 pmol μl−1, respectively. The data were accurately defined and fulfill the technical requirements of ISO 17025:2005.


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Additional Metadata

Item Type: Article
Subject: Gelatin; Amino acids; 6-Aminoquinolyl-N-hydroxysuccinimidyl carbamate reagent; Estimation of uncertainty
Divisions: Faculty of Medicine and Health Science
Halal Products Research Institute
DOI Number: https://doi.org/10.1016/j.jpba.2016.07.012
Publisher: Elsevier
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 06 Mar 2018 01:30
Last Modified: 03 May 2018 04:17
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.jpba.2016.07.012
URI: http://psasir.upm.edu.my/id/eprint/54191
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