Development, Validation and Application of a Stability Indicating HPLC Method to Quantify Lidocaine from Polyethylene-co-Vinyl Acetate (EVA) Matrices and Biological Fluids

Journal of Chromatographic Science
Prabhat BhusalDarren Svirskis

Abstract

An efficient and cost-effective quantification procedure for lidocaine by HPLC has been developed to estimate lidocaine from an EVA matrix, plasma, peritoneal fluid and intra-articular fluid (IAF). This method guarantees the resolution of lidocaine from the degradation products obtained from alkaline and oxidative stress. Chromatographic separation of lidocaine was achieved with a retention time of 7 min using a C18 column with a mobile phase comprising acetonitrile and potassium dihydrogen phosphate buffer (pH 5.5; 0.02 M) in the ratio of 26:74 at a flow rate of 1 mL min-1 with detection at 230 nm. Instability of lidocaine was observed to an oxidizing (0.02% H2O2) and alkaline environments (0.1 M NaOH). The calibration curve was found to be linear within the concentration range of 0.40-50.0 μg/mL. Intra-day and inter-day accuracy ranged between 95.9% and 99.1%, with precision (% RSD) below 6.70%. The limit of quantification and limit of detection were 0.40 μg/mL and 0.025 μg/mL, respectively. The simple extraction method described enabled the quantification of lidocaine from an EVA matrix using dichloromethane as a solvent. The assay and content uniformity of lidocaine within an EVA matrix were 103 ± 3.60% and 100 ± 2.60%, res...Continue Reading

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Mar 28, 2018·Drug Delivery and Translational Research·Prabhat BhusalDarren Svirskis

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