Validation of an ICP-MS method with microwave acidic mineralization for the determination of regulated toxic elemental impurities in medicinal plant raw materials and related drug preparations is described. The selected sample preparation technique ensures the maximum release of heavy metals into solution without completely decomposing the organic matrix using nitric acid. The method applicability was assessed using samples of different parts of plants, i.e., calamus rhizomes, beggar-tick herb, and juniper berries. Experimental data were used to estimate the linearity, limit of quantitation, accuracy, repeatability, and intralaboratory precision of the method being validated. Standard deviations, coefficients of variation, confidence intervals, systematic errors, Fisher F-criteria, and Student t-criteria were calculated based on the measured extraction coefficients of arsenic, lead, mercury, and cadmium. The obtained statistical parameters satisfied the acceptance criteria of the validation according to domestic and foreign regulatory guidelines.
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The work was performed in the framework of State Task No. 056-00003-20-00 for SCEEMP, Ministry of Health of Russia for applied scientific research (State Acct. No. NIR AAAA-A18-118021590049-0).
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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 54, No. 9, pp. 57 – 64, September, 2020.
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Shchukin, V.M., Zhigilei, E.S., Erina, A.A. et al. Validation of an ICP-MS Method for the Determination of Mercury, Lead, Cadmium, and Arsenic in Medicinal Plants and Related Drug Preparations. Pharm Chem J 54, 968–976 (2020). https://doi.org/10.1007/s11094-020-02306-8
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DOI: https://doi.org/10.1007/s11094-020-02306-8