http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1314636-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_12a135a933620c99beab01d4ac785d25 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J49-36 |
| filingDate | 1987-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1993-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a1fd1099bac129b43d7fc20d567ed7c3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_65b0087f00d2252504eb1f8d8d1a2f74 |
| publicationDate | 1993-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1314636-C |
| titleOfInvention | Atmospheric pressure capacitively coupled plasma atomizer for atomic absorption and emission spectroscopy |
| abstract | AN ATMOSPHERIC PRESSURE CAPACITIVELY COUPLED PLASMA ATOMIZER FOR ATOMIC ABSORPTION AND EMISSION SPECTROSCOPY ABSTRACT OF THE DISCLOSURE A novel atmospheric pressure capactively coup-led radio frequency plasma discharge method and apparatus are disclosed. The apparatus is suitable for atomic absorption and emission analysis of small, discrete sample volumes (1-50µl). The plasma can be operated at very low Radio Frequency (RF) input powers (30- 600 W) which allows for optimal conditions for atom resonance line absorption measurements. Sample introduction into the plasma is by an electrically heated tantalum strip vaporizer. The vaporization and dissociation-atomization steps are separately controlled. Analyte absorption takes place in the plasma discharge which is characterized by a long pathlength (10-50 cm) and low support gas flow rate (0.2 to 6 L/m) both of which provide for a relatively long residence time. The optimum RF power for Ag analysis is between 100 and 200 W and the optimum support gas flow rate is about 0.6 L/m. The device exhibits linear calibration plots and provides sensitivities in the range of from 3.5-40 pg. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106323923-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106323923-B |
| priorityDate | 1987-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.