| Autor: |
Cordonez, Edgar Darío Jordán, Crespo, Erik Orozco, Vivas, Fe Esperanza Vivas |
| Předmět: |
|
| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 2994 Issue 1, p1-12, 12p |
| Abstrakt: |
The validation of analytical methods is key to ensure the quality of the measurements, generates trust, promotes efficiency, competitiveness, and technical capacity against peers. The present work sought to validate the analytical method of the American Society of Oil Chemists AOCS Ca-5a-40 to determine the content of free fatty acids (%FFA) in five types of oils: Soybean (Glycine max. L), Palm Kernel (Elaeis Guineensis), Sunflower (Helianthus annuus L.), OxG Palm (Elaeis Oleifera - Elaeis Guineensis) and Palm (Elaeis Guineensis). The applied long R&R study determined that the analytical method works under conditions of repeatability and reproducibility and such contributions represent 0.01% of the total variance, while the measurement system contributes 2%. The main source of variability turned out to be the nature and composition of the samples. The performance parameters evaluated for the analytical method were: Measurement interval with values from 0.70% FFA to 3.46% FFA; Accuracy by percent recovery of 100.4% and bias with a value of 0.001%FFA; Precision by coefficients of variation for repeatability with values from 0.3% to 1.4% and coefficients of variation for reproducibility with values from 0.1% to 0.6%; Combined uncertainty of 0.021%FFA and the relative expanded uncertainty with values from 0.6% to 3.0%. The results obtained allow the validation of the AOCS Ca-5a-40 analytical method for the intended use under the conditions of the test laboratory, being within the suggested acceptance criteria. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
