Solvent-particles interactions during composite particles formation by pulsed laser melting of α-FeO.

This work thoroughly investigates chemical solvent-particles interactions during the formation of composite particles by pulsed laser melting of α-FeO. Two solvents, with different dielectric constants, such as ethyl acetate (ε = 6) and ethanol (ε = 24.6), were examined in terms of their effect on the morphology, size, and phase composition of iron oxide composites.

Breath analysis as promising indicator of hemodialysis efficiency.

Background: The measurement of trimethylamine and isoprene in exhaled breath collected from dialysed patients indicates the changes in concentration of both compounds during dialysis. The aim of the presented study was to confirm diagnostic usefulness of TMA and isoprene detected in breath, as potential biomarkers of hemodialysis efficiency.

Methods: The samples of exhaled breath were collected from 22 dialyzed patients (9 women, 13 men) before and after hemodialysis (HD).

Development of sampling method and chromatographic analysis of volatile organic compounds emitted from human skin.

Aim: The studies on volatile organic compounds emitted from skin are an interest for chemists, biologists and physicians due to their role in development of different scientific areas, including medical diagnostics, forensic medicine and the perfume design. This paper presents a proposal of two sampling methods applied to skin odor collection: the first one uses a bag of cellulose film, the second one, using cellulose sachets filled with active carbon.

Materials & Methods: Volatile organic compounds were adsorbed on carbon sorbent, removed via thermal desorption and analyzed using gas chromatograph with mass spectrometer.

The application of chromatographic breath analysis in the search of volatile biomarkers of chronic kidney disease and coexisting type 2 diabetes mellitus.

Chromatographic studies on breath composition are aimed at finding volatile markers useful for medical diagnostics or in screening investigations. Studies leading to the development of screening breath tests are especially important for the diagnostics of chronic kidney disease (CKD) and type 2 diabetes mellitus (T2DM). The aim of the presented study was to confirm diagnostic usefulness of chosen volatile compounds detected in breath, which are suggested as potential biomarkers of renal dysfunction and diabetes.

Detection of potential chronic kidney disease markers in breath using gas chromatography with mass-spectral detection coupled with thermal desorption method.

The analytical potential of chromatographic breath analysis towards detection of compounds suggested as markers of chronic kidney disease (CKD) was tested. Until now, trimethylamine (TMA) considered as a potential marker of renal disorder was detected mainly in plasma. Detection of TMA in breath was rarely undertaken due to analytical difficulties associated with amines' properties.

[New opportunities of renal diseases diagnostics using gas chromatography].

During the last decade the amount of patients suffering from chronic kidney disease (CKD) has increased. The physicians' efforts are focused on early CKD diagnosis and reduction of the end-stage renal diseases incidence. The breath test seems to be a promising diagnostic device offering early noninvasive diseases detection.