Preparation of Control Material for Platinum Determination in Plant

Chem. Anal. (Warsaw), 51, 489 (2006)
Preparation of Control Material for Platinum
Determination in Plant Samples
by Joanna Kowalska*, Monika Asztemborska, Iwona Miœkiewicz,
Ewa Stryjewska, Beata Krasnodêbska-Ostrêga and Jerzy Golimowski
Chemistry Department, Warsaw University
ul. Pasteura 1, 02-093 Warsaw, Poland
Keywords:
Platinum; Plant material; Control material; Voltammetry; GF–AAS;
ICP–MS
In this work a preparation procedure of control material for determination of platinum in
plant matrix has been described. For quantitative determination of Pt and other elements:
Cd, Pb, Zn, Cu, and Mn, three independent analytical methods have been applied. To
obtain plant material of higher content of platinum than is usually present in uncontaminated samples, two plant species: Indian mustard and Anawa maize were hydroponically
cultivated under controlled conditions in a nutrient solution with addition of [Pt(NH3)4]
(NO3)2.
W pracy przedstawiono szczegó³owo sposób przygotowania roœlinnego materia³u kontrolnego maj¹cego s³u¿yæ do sprawdzania wiarygodnoœci wyników i procedur oznaczania
platyny. Do oznaczania Pt i innych wybranych pierwiastków: Cd, Pb, Zn, Cu i Mn zastosowano trzy niezale¿ne metody analityczne. W celu uzyskania materia³u roœlinnego o podwy¿szonej w stosunku do próbek nie zanieczyszczonych zawartoœci Pt pozyskano dwa
gatunki roœlin – gorczycê i kukurydzê. Roœliny te uprawiano hydroponicznie w kontrolowanych warunkach na po¿ywce wzbogaconej w sól platyny: [Pt(NH3)4](NO3)2.
* Corresponding author. E-mail: [email protected]