EP 3980768 A1 20220413 - A SYSTEM FOR CHEMICAL ANALYSIS BY MEANS OF GAS-CHROMATOGRAPHIC SEPARATION AND PHOTOACOUSTIC SPECTROSCOPY OF SAMPLES MIXTURES
Title (en)
A SYSTEM FOR CHEMICAL ANALYSIS BY MEANS OF GAS-CHROMATOGRAPHIC SEPARATION AND PHOTOACOUSTIC SPECTROSCOPY OF SAMPLES MIXTURES
Title (de)
SYSTEM ZUR CHEMISCHEN ANALYSE MITTELS GASCHROMATOGRAFISCHER TRENNUNG UND FOTOAKUSTISCHER SPEKTROSKOPIE VON PROBEN
Title (fr)
SYSTÈME D'ANALYSE CHIMIQUE AU MOYEN D'UNE SÉPARATION PAR CHROMATOGRAPHIE EN PHASE GAZEUSE ET D'UNE SPECTROSCOPIE PHOTOACOUSTIQUE DE MÉLANGES D'ÉCHANTILLONS
Publication
Application
Priority
- IT 201900008442 A 20190610
- IB 2020055226 W 20200603
Abstract (en)
[origin: WO2020250086A1] The present invention relates to a portable chemical analysis system capable of identifying trace chemical substances (sub-ppm concentrations) also in the presence of other interfering substances, by virtue of the two-dimensional selectivity obtained from the combination between the Gas-Chromatographic (GC) separation technique and the photoacoustic (PA) infrared analysis technique, in particular, but not exclusively, in the implementation thereof referred to as Quartz Enhanced Photo Acoustic Spectroscopy (QEPAS). The GC module is preferably implemented as a MEMS device of the FAST type, capable of separating, with reduced thermal budgets and very short elution times (a few minutes), even complex and low-volatile samples. The QEPAS module is preferably constructed around an analysis cell with a microscopic inner volume, capable of processing, with high sensitivity and excellent selectivity, even very small vapor flows, such as those supplied by a FAST-GC column.
IPC 8 full level
G01N 30/76 (2006.01)
CPC (source: EP)
G01N 30/76 (2013.01)
Citation (search report)
See references of WO 2020250086A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020250086 A1 20201217; EP 3980768 A1 20220413; IT 201900008442 A1 20201210
DOCDB simple family (application)
IB 2020055226 W 20200603; EP 20735453 A 20200603; IT 201900008442 A 20190610