Preparation and characterization of phosphate rock as quality control material

A quality control material for inorganic constituents present in a phosphate-bearing rock used to manufacture phosphate fertilizers was produced and characterized according to the ISO Guide 80. The evaluation of the estimated minimum mass, homogeneity, and stability of the material was performed usi...

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Veröffentlicht in:	Accreditation and quality assurance 2018-02, Vol.23 (1), p.39-45
Hauptverfasser:	da Silva, Caroline Santos, de Souza, Gilberto Batista, Nogueira, Ana Rita Araujo
Format:	Artikel
Sprache:	eng
Schlagworte:	Agriculture Analytical Chemistry Biochemistry Chemistry Chemistry and Materials Science Chromium Commercial Law Confidence intervals Copper Ecotoxicology Fertilizers Food Science Homogeneity Humidity Inductively coupled plasma Laboratories Laser induced breakdown spectroscopy Manganese Marketing Optical emission spectroscopy Polyethylene terephthalate Practitioner's Report Quality control Reference materials Stability analysis Uncertainty Variance analysis
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