http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103217498-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_10b8c8b97f93ae2725b6ff3001890ecc |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-06 |
| filingDate | 2013-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c3f24d593caa7f4f48e188e79524dbcf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00a376bc65acec88dcec32ad158e8e0d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b22dd442a5a0e11bdc11d5800ed8f6d0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fe60dace284cb6232f885c6881537c67 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64b4bf30679ddd0c4671b1ac3c56682c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab8d044533c21d91b7019e6013c964c9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7f5b7f430265dc74f9516f25117e6bb8 |
| publicationDate | 2015-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103217498-B |
| titleOfInvention | Method for detecting dicyandiamide in milk powder with LC-MS (liquid chromatography/mass spectrometry) and sample preparation method |
| abstract | The invention provides a sample preparation method for detecting dicyandiamide in milk powder with LC-MS (liquid chromatography/mass spectrometry). The sample preparation method comprises the following steps of: dissolving a sample in water, adding an organic extracting solution to the dissolved sample to extract, adding MgSO4 and NaCl for layering the organic extracting solution and a water phase, centrifuging the solution to obtain first liquid supernatant, adding an adsorbing material to the first liquid supernatant for purifying, centrifuging the purified first liquid supernatant to obtain second liquid supernatant, and concentrating, re-dissolving and filtering the second liquid supernatant to obtain a sample to be detected. A method for detecting dicyandiamide in milk powder with LC-MS comprises the steps of preparation of the sample and detection on dicyandiamide in milk powder by an ultra-high performance liquid chromatography-triple four-level rod mass spectrum combining instrument. The sample preparation method suitable for LC-MS detection is capable of removing interference molecules through extraction and purification, and thus the accuracy of sample detection is higher. |
| priorityDate | 2013-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.