http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110161015-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N1-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N1-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-34 |
| filingDate | 2019-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110161015-B |
| titleOfInvention | Method for determining content of phosphorus-magnesium-iron-aluminum-calcium-manganese-titanium oxide in black shale |
| abstract | The invention discloses a method for determining the content of phosphorus, magnesium, iron, aluminum, calcium, manganese and titanium oxides in black shale, and belongs to the technical field of analysis and test of black shale. The method comprises the steps of digesting a sample by hydrochloric acid-hydrofluoric acid-nitric acid, wherein silicon tetrafluoride does not escape in a certain temperature range, hydrofluoric acid is not required to be driven, hydrofluoric acid is directly fed, a standard working curve is established by adopting a silicon matrix matching method, the contents of oxides of phosphorus, magnesium, iron, aluminum, calcium, manganese and titanium elements in Yunnan Kunmang phosphorite black shale are rapidly measured by using an inductively coupled plasma emission spectrometry (ICP-AES), the method has the advantages of small matrix effect, no interference among elements to be measured, simple and safe sample pretreatment operation, and the problems of acid-driving and silicon-removing SiF existing in the traditional sample dissolving method are solved 4 The escape is unsafe and the acid removing time period is long, simultaneously, the working efficiency is improved, the energy consumption is reduced, and the method has good application prospect; the detection limit is 0.0012-0.028 mug/g, the relative standard deviation is 0.29-1.5%, and the method has the characteristics of strong anti-interference capability, wide linear range, high precision and the like. |
| priorityDate | 2019-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 82.