| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d622a0608e3aeef107d6d1c53e172695
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_41617b523cb0dc38bf3bb4f7df6b822a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_63482f03962d451293c301efa963a576
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_928a086f6f16032db3fbed1377b861c3 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-18 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N1-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-1826
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D17-047
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-2835 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D59-00 |
| filingDate |
2011-11-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e8474f3256b77c9afd4693ea25d419e6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aeb0d6355482a2688350a03408dc6a97
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_726765c0cc9ddbc9b86a38b9279d8a49 |
| publicationDate |
2012-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2012141740-A1 |
| titleOfInvention |
Method for preparing petroleum based sample for analysis of elemental and isotopic species |
| abstract |
A method of separating petroleum samples containing a hydrocarbon-soluble elemental species of interest to facilitate analysis of an elemental and/or isotopic signature. A petroleum sample is mixed with a demulsifier and separated, for example by centrifuging, into one or more intermediate organic fractions. The intermediate organic fraction(s) are mixed with a solvent such as water and a second demulsifier, then separated into one or more prepared organic fractions and one or more solvent-based fractions. Some or all of the resulting fractions are then stored for possible further processing. Optionally, the petroleum sample may be spiked with one or more of an organic standard and an inorganic standard, and the solvent may likewise be spiked with an inorganic internal standard, to facilitate later analysis. |
| priorityDate |
2011-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |