| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5db97a1c67e768f4b174d8c343d5a713 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J49-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J49-168 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J49-10 |
| filingDate |
2004-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2008-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_03c1cd828e5a7a442d2389431cf36b83
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a50e363c085909fcc1fbc87e1273df5f |
| publicationDate |
2008-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7417226-B2 |
| titleOfInvention |
Mass spectrometer |
| abstract |
An Atmospheric Pressure Chemical Ionisation (“APCI”) ion source is disclosed comprising a housing 14 having a corona discharge chamber 1 , a reaction chamber 2 and a passage 6 connecting the corona discharge chamber 1 to the reaction chamber 2 . Reagent ions are formed in the corona discharge chamber 1 and pass to the reaction chamber 2 via the passage 6 . Analyte is sprayed into a heated tube 3 . Low to moderately polar analyte molecules pass from the heated tube 3 into the reaction chamber 2 whereupon the analyte molecules are ionised by interacting with reagent ions. In contrast, highly polar analytes are ionised by thermal ionisation processes within the heated tube 3 and hence highly polar analyte ions pass into the reaction chamber 2 . Analyte ions entering the reaction chamber 2 are substantially shielded from the effects of an electric field generated in the corona discharge chamber 1 as part of the process of generating reagent ions. The APCI ion source according to the preferred embodiment is able to optimally ionise a sample containing both low to moderately polar analytes and also highly polar analytes. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011309243-A1
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7851751-B2 |
| priorityDate |
2003-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |