Analytical Laboratory in Průhonice

Analytical laboratory provides mainly the basic analyses not only for individuals and  research grant groups of employees of Institute of Botany as well as for other scientific institutions, especially the Faculty of Science of the Charles University.

The laboratory offers analytical methods primarily focused on analyses of soil and plant materials and determines the total and available content of basic nutrients – calcium, magnesium, potassium and others biogenic macro- and microelements.Typical tasks include comparative analyses of soils and plant biomass from the same locality to monitor transport of nutrients and trace elements. Available nutrients are deposited in soil in several forms including anions (carbonates, chlorides, phosphates, sulphates) and cations (ammonium, calcium, magnesium). Except of biogenic elements the laboratory provides analyses of contents of a number of trace elements, which are considered to be contaminants and pollutants (cadmium, aluminum, lead, chromium, nickel).

These analyses are done mainly using the following physical-chemical methods. For determination of individual nutrients and trace elements is used Atomic Absorption Spectrometry with flame and electrothermic modes (ContraAA 700). The determination of basic anions is carried out by using UV spectrometry (UV-400 Unicam) and flow photometric analysis (QuickChem FIA+). The total content of non-metal elements (carbon, nitrogen, sulphur) and also the content of total organic carbon (TOC) is determined by using the Analyzator NC 2500. There are also provided determinations of basic soil characteristics as soil structure (Laser analyzator A-22 Micro-Tec plus), active and exchangeable pH (Multilab WTW 540), electric conductivity (Multilab WTW 540), cation-exchange capacity, exchangeable acidity, water content and content of combustible organic matter.

Laboratory methods used in the analysis are drawn up in accordance with applicable CSN or ISO standards.To ensure the validity of results, the laboratory uses commercial standards, reference materials and regularly participates in interlaboratory comparison tests (UKZUZ).