http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107328762-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-73 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-73 |
| filingDate | 2017-08-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107328762-B |
| titleOfInvention | Method for measuring contents of lead and cadmium elements in silver ornaments |
| abstract | The invention relates to determination of lead and cadmium elements in silver ornaments, belonging to the field of noble metal analysis. A method for measuring the contents of lead and cadmium elements in a silver ornament comprises the following steps: dissolving a silver sample to be detected by using nitric acid to obtain a silver nitrate solution; then adding a thiocyanate solution into the silver nitrate solution to completely precipitate silver nitrate into silver thiocyanate; finally, filtering to remove the silver thiocyanate precipitate, and taking the filtrate to determine the content of the lead and the cadmium elements. The potassium thiocyanate is used as a precipitator, so that the problem that the lead and cadmium elements cannot be accurately detected due to the adsorption effect of silver chloride precipitates on the lead and cadmium elements can be well solved, and the accurate determination of the content of the two elements of the silver ornament can be realized. |
| priorityDate | 2017-08-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.