Origin and transport of radon in a dry and in a wet mofette of COVASNA, Romania.

The appearances of significant efflux of carbon dioxide through soil surfaces is a frequent natural phenomena in the wider vicinity of relatively young volcanic fields. These mofettes are often utilised as dry carbon dioxide spas to treat patients suffering from cardiovascular diseases. The carbon dioxide always carries some naturally occurring radioactive radon gas with it.

Separation/preconcentration of Cr(VI) with a Modified Single-drop Microextraction Device and Determination by GFAAS.

We have developed a chromium speciation and preconcentration method with the use of the graphite furnace atomic absorption spectrometry (GFAAS) technique. This method is based on single-drop microextraction (SDME) technique. Nowadays the microextractions have become popular, because low amount of organic solvent needs to be used for the separation.

An optimized HPLC method for soil fungal biomass determination and its application to a detritus manipulation study.

The goal of this research was to develop modified analytical method for the quantitative analysis of ergosterol, which is highly effective marker for fungal biomass. We suggest that our optimized method for the determination of ergosterol is an effective way to monitor changes in fungal biomass under different environmental conditions.