METHOD AND DEVICE FOR THE SAMPLING OF TRACE ELEMENTS IN GAS, LIQUIDS, SOLIDS OR IN SURFACE LAYERS

摘要

a collecting surface (3) is in contact with the appropriate selective absorption in specified conditions with gas, liquid or solid for the sample, the concentration of a chemical reaction, and eventually determined the trace element is measured.the collecting surface is then conducted to a contact membrane (1) is swept by a carrier gas heated and (2) the head of a receiving device in order to obtain the analytical analysis of gas absorption and / or reaction products.trace elements and thermally desorbed quantitatively through collecting surface (3) are placed into solution, diffusion and evaporation through the contact membrane (1) and are carried by the carrier gas through a pipe (2) or a column) e to be split by gas chromatography to a gas analyzer.for example, a mass spectrometry (ms). the method of sampling for qualitative and quantitative trace analysis using gas chromatography (gc) and gc / ms, and the combination is simple, fast, and universal.the process is advantageously used for the routine analysis in the environmental, food, waste, process and quality control in medical and chemical analysis, toxicology, microbiology, the research on the experiment of pharmacology, doping control, forensic science and forensic medicine.