Published in Scientific Papers. Series B, Horticulture, Vol. LXV, Issue 2
Written by Violeta Alexandra ION, Roxana Maria MADJAR, Oana-Crina BUJOR, Liliana BĂDULESCU
Organic agriculture is increasing in Romania, especially due to a better understanding of the effect of conventional agriculture on biodiversity. Being a relatively new implemented concept, there is a gap in the regulations regarding contaminants in organic inputs. Therefore, there are no available standard methods used to quantify contaminants such as pesticides from inputs (fertilisers) used for organic farming. This study aims to develop and to validate a quantification method to analyse the triazine contaminants (Hexazinone, Simazine, Simetryne, Atrazine, Ametryn, Propazine, Terbuthylazine, Prometryn) from organic foliar fertilizer using UPLC-PDA. Commercialy available types of fertilizer were used as complex matrix (Codamix). The quantification method was evaluated in terms of linearity, limit of detection and limit of quantification, BIAS, recovery, precision of repeatability and precision of reproducibility. Based on the acquired data, the standard uncertainty of the method was also evaluated. The developed and validated method can be successfully optimised for other type of organic fertilisers.
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