http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0291570-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fec576c38e34882531ca37d6b922bf42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-31 |
| filingDate | 1988-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f4fb2113e0a983b38e965fc3849b576d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d67e4b592afaef6a4f55862cffeaf9dd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9daad97d86879e633a4df9c09043524c |
| publicationDate | 1990-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0291570-A |
| titleOfInvention | Analysis of transition metal in fluoride |
| abstract | PURPOSE: To exactly analyze the transition metal in a fluoride to ppb order by adding nitric acid, etc. to a specific fluoride compd., then dissolving, under heating then adding boric acid, sodium diethyl carbamate thereto to adjust the pH and subjecting the soln. to extraction by an org. solvent and back extraction by a mineral acid, then subjecting the soln. to a quantitative analysis. n CONSTITUTION: The nitric acid or perchloric acid is added to at least one kind of the compd. selected from a group of LiF, NaF, KF, and BaF 2 and is dissolved under heating; thereafter, the boric acid and the sodium diethyl carbamate (DDTC) are added thereto and after the pH is adjusted to 4.5 to 5.5, the soln. is subjected to the extraction by the org. solvent and the back extraction by the mineral acid, following which the soln. is subjected to the quantitative analysis by a flameless atomic absorption method. The analysis of the transition metal of the fluoride to the ppb order in a short period of time by using the simple device is possible in this way. n COPYRIGHT: (C)1990,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5546182-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-100447086-C http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9428394-A1 |
| priorityDate | 1988-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.