| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_70aa9b350a2c58985716a27c03fe3af0 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-170769
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-179228 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-766 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-76 |
| filingDate |
1980-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1981-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_68f021ec8bee1db7e584b5f621abd898
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bf55a8cfeeab12f5931623f39d538823 |
| publicationDate |
1981-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4301114-A |
| titleOfInvention |
Molecular sieve trap for nitrogen compound detection |
| abstract |
A molecular sieve trap is disclosed for selective trapping of substances in a gas stream, the trap being particularly useful in systems for detecting nitrogen compounds such as N-nitrosamines or nitrogen oxides in a sample. The trap comprises a cartridge containing a packing of a granular adsorbent molecular sieve material with a carefully controlled pore size of about ten angstroms and a preference for adsorbing polar substances. The packing readily passes NO and NO 2 gases in a gas stream directed through the trap while trapping and retaining larger and/or more polar molecules such as those of double-bonded carbon compounds and sulfur compounds which could otherwise interfere with subsequent measurement of the NO or NO x content of the gas stream. An N-nitroso compound detection system incorporating the molecular sieve trap is described wherein the molecular sieve trap is interposed between a pyrolyzer and a chemiluminescent NO detector to selectively trap substances in the reactor effluent. Also disclosed is a NO x detection system having a molecular sieve trap in a sample inlet line of a NO x detector. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009027675-A1
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2012325925-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2028478-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5891735-A |
| priorityDate |
1980-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |