| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73942056c1468b977afe01b97ff79869 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-6078
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01L2300-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2030-128
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01L2200-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2030-121
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01L2300-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01L2300-0627
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01L2300-0838
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2030-143 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-7206
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01L3-502
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-461
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N1-405
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N1-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-40 |
| filingDate |
2017-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_be64787bfa8f8ea9a08356725d3532ac |
| publicationDate |
2019-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-109313167-A |
| titleOfInvention |
Polycapillary column preconcentration system for enhanced sensitivity in gas chromatography (GC) and gas chromatography-mass spectrometry (GCMS) |
| abstract |
A polycapillary column preconcentration trap (300) is disclosed for use in various chromatography techniques such as gas chromatography (GC) or gas chromatography-mass spectrometry (GCMS). The trap (300) includes a first trap (204) comprising a plurality of capillary columns (208A, 208B) connected in series in order of increasing intensity (ie increasing chemical affinity for one or more sample compounds) , 208C). The sample enters the trap (204), from the sample vial (202) into the relatively weak column (208A) of the trap to the relatively strongest column (208C), for example via any additional columns contained in the trap in between (208B). The trap is backwashed so that the sample flows out of the trap through the relatively weak head of the column. The trap can be further heated to aid in sample desorption. Next, the sample can be injected into a chemical analysis device (206) to perform chromatography techniques (eg, GC or GCMS), or the sample can be injected into a second trap (304) for further concentration. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112924564-A |
| priorityDate |
2016-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |