Spectral methods

Fluorescence spectrophotometer – Fluorolog-3 (HORIBA Jobin IVON)

Contact:

doc. RNDr. Juraj Bujdák, DrSc., uachjuro@savba.sk

Mgr. Peter Boháč, PhD., peter.bohac@savba.sk

Fluorolog 3 is a unique, modular system for the measurement of steady-state fluorescence and phosphorescence spectra of liquid and solid samples including non-transparent materials. The spectrophotometer is very sensitive and flexible to be used for various types of fluorescence or phosphorescence measurements in emission, excitation and synchronous modes. The set is able to measure in ultraviolet, visible and near-infrared regions.

  • Measurement within a spectral region 200-1600 nm
  • Adjustable spectral slit individually for excitation and emission

Modules and accessories:

  • Motorized, software-controlled excitation and emission polarizers for the measurements of fluorescence anisotropy, and linearly-polarised fluorescence spectra
  • Topped-flow accessory for the measurements of reaction kinetics for the fast reactions
  • Integral sphere for the automatic measurements and determinations of photoluminescence quantum yields
  • Autotitrator for the spectrophotometric titrations
  • Accessory for constant temperature measurements using a Peltier type thermostat
  • Front face configuration for the measurement of non-transparent samples
  • Phosphorescence measurements using a flash lamp
  • special detector for the measurement in a near infrared region

 

FTIR spectrometer Nicolet 6700 (Thermo Scientific)

Contact: RNDr. Jana Madejová, DrSc. e-mail: jana.madejova@savba.sk

High research-grade Fourier Transform Infrared (FTIR) spectrometer allows measurement of the spectra in the near (12000-4000 cm-1), middle (4000-400 cm-1) and far (400-50 cm-1) infrared regions. The instrument is used for measurement of the spectra of solid (powders, films, etc.), liquid (suspension, dispersion,) or gaseous samples. This method is very convenient for qualitative or semi-quantitative analysis of materials of various types, e.g. to follow purity of chemical compounds, mineralogical composition of the rocks, in the various branches of material research to characterize materials, to follow their properties, interactions and changes upon material processing. Except of conventional transmission techniques, the FTIR spectrometer Nicolet 6700 is equipped with Smart Accessories for reflectance technique including:

  • Orbit diamond single bounce ATR (attenuated total reflection),
  • Specular ATR,
  • Diffuse Reflectance and Near-IR UpDRIFT accessory and environmental chamber allowing experiments under controlled temperature (up to 900 °C) and/or under controlled gaseous atmosphere.

AABSPEC 2000-A Multi-Mode Spectroscopy System (extension to FTIR spectrometer)

Contact: Ing. František Šimko, PhD. e-mail: frantisek.simko@savba.sk

  • determined for measurement of the infrared spectra of the agresive samples such as fluoride melts.
  • available temperature range: -170 – 900 °C, transmission mode

 

Raman spectrometer – Renishaw inVia Raman Microscope

Unique configuration equipped with high power Ar laser (output at the spectral line 514 nm higher than 2 W) and HeNe laser, and with other specific supplements such as FT IR, high temperature stages, and software (spectral libraries, mathematical-statistic software Solo-Mia, etc.) is used for recording and evaluation of the Raman spectra of all types of materials, including glasses, ceramics, corrosion products, etc.

 

UV-VIS spectrophotometer – Cary 100 (Varian)

Double-beam spectrophotometer is characteristic with a high spectral accuracy and adjustable spectral bandwidth.

Spectrophotometer Cary 100 is ideal for measuring an extensive set of samples from solutions to solid/non-liquid optical materials. It can be used for various scientific, as well as applied industrial applications, based on measuring the spectra in the whole UV-VIS range (200-900 nm), quantitative analysis of chromophores (including biochemical compounds), measuring the reaction kinetics, etc. Cary 100 spectrophotometer is used mainly for studying the interactions of organic compounds with clay minerals for investigations of the optical properties of dye cations in clay dispersion, adsorption of organic pollutants on the surface of organically-modified clay adsorbents, determination of the reaction products in clay-catalysed organic reactions, etc.
Contact: Mgr. Peter Boháč, PhD., peter.bohac@savba.sk

 

UV-VIS spectrophotometer – Cary 5000 UV-Vis-NIR

Measure 175 to 3300 nm using a PbSmart NIR detector for extended photometric range.

Measure beyond 8.0 absorbance units with reference beam attenuationVariable slit widths (down to 0.01 nm) for optimum control over data resolution.

Nitrogen pumping – separate purging in the sample and monochromator compartments
Versatile set of accessories for materials research:

  • Cary Universal Measurement Accessory (UMA) Enabling multi-angle, absolute reflection (R), transmission (T), absorptance (A) and scattering measurements of solid samples.
  • UV-Vis-NIR Praying Mantis Diffuse Reflectance Accessory
  • Water Thermostatted 8×6 Multicell Holder
  • Film Holder Accessory and UV-Vis Solid Sample Holders
  • Polarizer and Depolarizer
  • Fiber Optic Probes

Contact: Mgr. Peter Boháč, PhD., peter.bohac@savba.sk

 

AAS spectrophotometer Varian GS280 (240/Zeeman GTA 120)

The atomic absorption spectrometer with the graphite furnace atomizer for determination of trace concentrations of the metal elements. The liquid samples of the micro-litre volumes are atomized in the graphite furnace atomizer. Zeeman technique is applied to correct high values of nonspecific absorption.

Contact: prof. Ing. Dušan Galusek, DrSc., e-mail: dusan.galusek@tnuni.sk (Trenčín)

 

ICP OES (Varian VISTA MPX)

Inductively coupled plasma optical emission spectrometry (ICP-OES), is an analytical technique used for the detection of metals. It is a type of emission spectroscopy that uses the inductively coupled plasma to produce excited atoms and ions that emit electromagnetic radiation at wavelengths characteristic for a particular element.

Contact: prof. Ing. Dušan Galusek, DrSc., e-mail: dusan.galusek@tnuni.sk (Trenčín)