| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c5731aa4881af0699108372a8a9e1e48 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-72 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-72 |
| filingDate |
1990-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ccc315c072d3b0c7e5d330f25d058b3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_24ae6f98668c993725d5e0ea6b68dd85
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_42af75e225be5f3debc578ed82e30835
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_149ff457082abd1ec7384719b4c8e4fc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1d657071b5e502ce3eccb70a412c489e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ffaba57a6275bb987f7e67ee3a6f38dc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81c77b72cc939f282d542b75b6ae502c |
| publicationDate |
1991-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9105241-A1 |
| titleOfInvention |
Infrared emission detection |
| abstract |
The apparatus and method for observing infrared emission from excited molecules in samples of interest was investigated. Over the wavelength interval from 1 to 5 νm, two strong emission bands were observed with a PbSe detector (429) when organic compounds were introduced into a hydrogen/air flame (421). The band at 4.3 νm (2326 cm-1) was due to the asymmetric stretch of carbon dioxide while the band at 2.7 νm was due to both water and carbon dioxide emission. The carbon dioxide emission at 4.3 νm was found to be most intense at the tip of the flame (421), and was found to increase with the amount of organic compound introduced into the flame (421). For chromatographic application, an optical filter (428) was used to isolate the 4.3 νm emission band. The infrared emission detection system finds application in the determination of total inorganic carbon, chloride and available chlorine in aqueous samples. The detector is optimized by use of a dual beam system with background subtraction capabilities thereby eliminating background noise and the fluctuations therein. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9950649-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0129540-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109300564-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4231777-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5473162-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9408228-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2799838-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2352034-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2352034-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9194274-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109300564-A |
| priorityDate |
1989-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |