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Titel (primär) Capability of a XRF method for monitoring the content of the macronutrients Mg, P, S, K and Ca in agricultural crops
Autor Morgenstern, P.; Brüggemann, L.; Meißner, R.; Seeger, J.; Wennrich, R.;
Journal / Serie Water Air and Soil Pollution
Erscheinungsjahr 2010
Department ANA; BOPHY;
Band/Volume 209
Heft 1-4
Sprache englisch;
Keywords X-ray fluorescence analysis; Vegetable nutrients; Fitness for purpose; Duplicate method; Critical concentrations
Abstract To examine the concentration of Mg, P, S, K and Ca in agricultural crops growing under changing conditions, plant material was collected from an adequate number of cultivated targets (lysimeter trial) and finally analysed by means of wavelength dispersive X-ray fluorescence spectrometry. The investigations were focused on the evaluation of each 16 grassland and 16 arable land used lysimeters on the other hand. The measurement uncertainty of the method used (including the analytical and sampling components) was estimated by means of the duplicate method. Based on the evaluation of the accumulated data pool, the minimum detectable concentration difference for the individual analytes was estimated. In the framework of the fitness for purpose concept, the present study particularly aimed at the estimation of minimum sample size in consideration of a commonly accepted decision limit and detection capability, given by an error I probability a?=?0.05 and an error II probability ß?=?0.05, respectively.
ID 10321
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10321
Morgenstern, P., Brüggemann, L., Meißner, R., Seeger, J., Wennrich, R. (2010):
Capability of a XRF method for monitoring the content of the macronutrients Mg, P, S, K and Ca in agricultural crops
Water Air Soil Pollut. 209 (1-4), 315 - 322