Preparation and certification of the Polish reference material

Tea leaves (INCT-T-1) for inorganic trace analysis

by Rajmund Dybczynski, Božena Danko, Krzystof Kulisa, Ewelina Maleszewska, Halina Polkowska, Zbigniew Samczynski, Zygmunt Sztopa, Ljudmila Benedik, Radojko Jaćimović, Vekoslava Stibilj, Urška Repinc, Janja Smrke, Zdenka Trkov · 2002