A mobile, field applicable resonance enhanced multiphoton ionization-time-of-flight mass spectrometer (REMPI-TOFMS) for direct-inlet gas-phase anal. as well as for characterization of solid samples, was developed. For solid-sample anal., laser desorption (LD) with IR-laser pulses was used for volatilization of the neutral analytes from a target in the ion source prior to REMPI-TOFMS anal. For direct inlet gas-phase anal., a needle gas inlet was used and the formed mol. beam is REMPI-ionized directly in the ion source. A special ion source was developed, which can be rapidly interchanged between the REMPI-TOFMS and the LD-REMPI-TOFMS modes. The system is equipped with a tuneable optical parametrical oscillator (OPO)-laser system. The anal. properties are characterized for both modes of operations. In both cases, anal. performance is similar to that achieved with instruments specifically designed for either gas-phase or solid-phase characterization. Results from field measurements of a wood combustion flue gas of a 174 kW bio mass furnace are given. Gas-phase anal. was applied for time-resolved online REMPI-TOFMS of the semi-volatile arom. flue gas constituents. The low-volatile arom. compds., which were pptd. with the particulate matter in the filtering unit of the sampling train, were characterized by direct LD-REMPI-TOFMS of the glass fiber filter material. By combining the gas-phase and particulate results a rather comprehensive characterization of the arom. species present in the flue gas (i.e. aerosol - gas phase plus particulate matter) was achieved. [on SciFinder(R)]     «

A mobile, field applicable resonance enhanced multiphoton ionization-time-of-flight mass spectrometer (REMPI-TOFMS) for direct-inlet gas-phase anal. as well as for characterization of solid samples, was developed. For solid-sample anal., laser desorption (LD) with IR-laser pulses was used for volatilization of the neutral analytes from a target in the ion source prior to REMPI-TOFMS anal. For direct inlet gas-phase anal., a needle gas inlet was used and the formed mol. beam is REMPI-ionized dire...     »

Aromatic compounds Role: ANT (Analyte), ANST (Analytical study) (analytes mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Polycyclic compounds Role: ANT (Analyte), ANST (Analytical study) (arom. hydrocarbons, analytes mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Coffee products (beans, samples mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Environmental analysis Gas analysis Ion sources Time-of-flight mass spectrometers (mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Photoionization mass spectrometry (multiphoton, time-of-flight mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Laser ionization mass spectrometry (photodesorption, time-of-flight mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Laser desorption mass spectrometry (photoionization, time-of-flight mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Aromatic hydrocarbons Role: ANT (Analyte), ANST (Analytical study) (polycyclic, analytes mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Biological materials Flue gases River sediments Soot Wood (samples mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Samples (solid mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Airborne particles (urban, samples mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) field applicable resonance enhanced multiphoton ionization mass spectrometer hybrid laser desorption mol beam ion source mass spectrometer arom analysis multiphoton ionization TOF mass spectrometry gas phase arom analysis multiphoton ionization TOF mass spectrometry solid sample arom analysis multiphoton ionization TOF mass spectrometry     «

Aromatic compounds Role: ANT (Analyte), ANST (Analytical study) (analytes mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples) Polycyclic compounds Role: ANT (Analyte), ANST (Analytical study) (arom. hydrocarbons, analytes mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desor...     »

CAN 142:147382 80-5 Organic Analytical Chemistry GSF-Forschungszentrum, Institut fuer OEkologische Chemie, Oberschleissheim, Germany. Journal 0021-9673 50-32-8 (Benz[a]pyrene); 53-70-3 (Dibenzo[a,h]anthracene); 56-55-3 (Benzo[a]anthracene); 81-31-2 (Dibenzanthrene); 83-32-9 (Acenaphthene); 85-01-8 (Phenanthrene); 85-01-8D (Phenanthrene); 86-73-7 (Fluorene); 91-20-3 (Naphthalene); 92-52-4 (Biphenyl); 107-02-8 (Acrolein); 108-95-2 (Phenol); 120-12-7 (Anthracene); 129-00-0 (Pyrene); 132-64-9 (Dibenzofuran); 135-48-8D (Pentacene); 188-94-3 (Periflanthene); 188-96-5 (Peropyrene); 190-70-5 (Benzo[a]coronene); 191-07-1 (Coronene); 191-07-1D (Coronene); 191-24-2 (Benzo[ghi]perylene); 191-26-4 (Anthanthrene); 191-32-2 (2H-Benzo[cd]pyrene); 191-48-0 (Decacyclene); 191-53-7 (Tetrabenzo[a,cd,j,lm]perylene); 197-70-6 (Benzo[b]perylene); 198-55-0 (Perylene); 205-99-2 (Benzo[b]fluoranthene); 206-44-0 (Fluoranthene); 207-08-9 (Benzo[k]fluoranthene); 208-96-8 (Acenaphthylene); 218-01-9 (Chrysene); 218-01-9D (Chrysene); 271-89-6 (Benzofuran); 313-62-2 (Tribenzo[a,d,g]coronene); 496-11-7 (Indane); 1321-94-4 (Methylnaphthalene); 11057-45-7 (Benzoperylene); 27577-90-8 (Methylpyrene); 28652-72-4 (Methylbiphenyl); 30997-39-8 (Methylfluoranthene); 31711-53-2 (Methylphenanthrene); 33907-13-0; 41637-90-5 (Methylchrysene); 56832-73-6 (Benzofluoranthene); 60382-88-9 (Dibenzofluoranthene); 65256-40-8 (Dibenzoperylene); 67017-06-5 (Dibenzocoronene); 75449-88-6 (Benz[a]ovalene); 94417-21-7 (Naphth[2,1,8-bcd]ovalene) Role: ANT (Analyte), ANST (Analytical study) (analyte; mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples); 58-08-2 (Caffeine); 458-35-5 (Coniferyl alcohol); 537-33-7 (Sinapyl alcohol) Role: ANT (Analyte), PRP (Properties), ANST (Analytical study) (analyte; mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples); 1517-22-2 (Phenanthrene-d10); 1520-96-3 (Perylene-d12); 1718-52-1 (Pyrene-d10); 1719-03-5 (Chrysene-d12); 16083-32-2 (Coronene-d12); 63466-71-7 (Benzo[a]pyrene-d12) Role: ARU (Analytical role, unclassified), ANST (Analytical study) (std.; mobile resonance enhanced multiphoton ionization-time-of-flight mass spectrometer with a novel hybrid laser desorption/mol. beam ion source for rapid detection of arom. trace compds. from gas phase and solid samples)     «

CAN 142:147382 80-5 Organic Analytical Chemistry GSF-Forschungszentrum, Institut fuer OEkologische Chemie, Oberschleissheim, Germany. Journal 0021-9673 50-32-8 (Benz[a]pyrene); 53-70-3 (Dibenzo[a,h]anthracene); 56-55-3 (Benzo[a]anthracene); 81-31-2 (Dibenzanthrene); 83-32-9 (Acenaphthene); 85-01-8 (Phenanthrene); 85-01-8D (Phenanthrene); 86-73-7 (Fluorene); 91-20-3 (Naphthalene); 92-52-4 (Biphenyl); 107-02-8 (Acrolein); 108-95-2 (Phenol); 120-12-7 (Anthracene); 129-00-0 (Pyrene); 1...     »