http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112986478-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-89 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-89 |
| filingDate | 2021-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112986478-B |
| titleOfInvention | Determination method for screening and quantitatively analyzing preservative components in compound liquorice tablets |
| abstract | The invention provides a determination method for screening and quantitatively analyzing preservative components in compound liquorice tablets, which comprises the following steps: (1) preparing a test solution: taking 10 compound liquorice tablets, precisely weighing, grinding, precisely weighing about 1 tablet, putting into a 50mL measuring flask, adding an appropriate amount of diluent, performing ultrasonic treatment, cooling, diluting with the diluent to scale, shaking up, filtering with a 0.45 μm microporous membrane, and taking the subsequent filtrate as a sample solution; (2) preparation of a reference solution: weighing sodium benzoate, potassium sorbate (calculated as sorbic acid), methyl hydroxybenzoate, ethyl hydroxybenzoate, propyl hydroxybenzoate and butyl hydroxybenzoate standard, adding diluent, dissolving, and making into reference solutions with different concentrations; (3) and (4) measuring by using a reversed-phase high performance liquid chromatography. The method realizes content determination of sodium benzoate in compound radix Glycyrrhizae tablet, and can be used for screening and quantitative analysis of whether sorbic acid and hydroxyphenyl preservative are illegally added. |
| priorityDate | 2021-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.