Quality assurance and control in a plant analysis laboratory

Fallavier Paul, Heral-Llimous Gisèle, Breysse Marion, Cazevieille Patrick. 1997. Quality assurance and control in a plant analysis laboratory. In : Soil and plant analysis in sustainable agriculture and environment. Hood T.M., Benton Jones J. Jr. New York : M. Dekker, 151-160.

Autre titre : Assurance et contrôle qualité dans une analyse de plantes au laboratoire

Note générale : Document publié aussi dans "Communications in Soil Science and Plant Analysis, Volume 27, Nos 3 à 8, 1996"

Résumé : The plant samples are mineralized using the CII reference method, then K, Ca, Mg, Na, P, B, Fe, Cu, Mn, Zn, and Al are determined with a multi-channel AES-Inductively coupled plasma (ICP) emission spectrometer. The measurement protocol is based on the repeatability and the precision of the whole of these elements: the calibration is done again every 20 samples. The results computation takes the shift into account, When a complex 10 mg/L solution is analyzed for six hours (120 measures), the variation coefficients are less than 2.5%. The routine analyses control is done introducing intemal reference samples (palm tree, pineapple, and maize leaves powders). Control charts are drawn to check the global quality,including the mineralization and the instrumental measure. The yearly variation coefficients arc less than 6%, except for Cu and Zn in the ananas sample. The laboratory proficiency is tested with the Intemational Plant Exchange program. Our results are very close to the published medians, except for Al. In this case, we observe a systematic deviation.

Mots-clés Agrovoc : plante, Zea mays, Ananas comosus, Elaeis guineensis, composition chimique, technique analytique, mesure (activité), contrôle de qualité, expérimentation en laboratoire

Classification Agris : F60 - Physiologie et biochimie végétale

Auteurs et affiliations

• Fallavier Paul, CIRAD-GERDAT-URA (FRA)
• Heral-Llimous Gisèle
• Breysse Marion, CIRAD-GERDAT-URA (FRA)
• Cazevieille Patrick, CIRAD-GERDAT-URA (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/389526/)

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