Method of measuring gaseous products released during biodegradation of biodegradable polymeric materials and the apparatus for this.

摘要

The method of measuring gaseous products released during the biodegradation of biodegradable polymeric materials in a mixture with air is carried out by weighing a substrate, preferably soil or compost, into the reactor and examining the sample, which is then repeatedly measured. of the determined gas gradually released by the decomposition of the test sample in the reactor by a mass gas analyzer by mass spectrometry, also measuring the gas-internal standard signal, which is naturally occurring argon in the air and whose concentration in the air is constant. The concentration of the released gas is determined on the basis of a calibration carried out in parallel with the same concentrations under the same calibration conditions. The apparatus for carrying out the process consists of a reactor (1) provided with a neck (2) with a gas-tight closure (3) equipped with a septum (4), the reactor action space (5) containing components for the decomposition process and the reactor neck (6) containing gaseous products. process, the reactor (1) is further equipped with a detection system (7) consisting of a mass detector (8), a supply capillary (9) and a hollow needle (10), which connects the detection system (7) to the reactor neck (6) through the septum. (4).