http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-427494-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_945ebcf9c1ac39d066197f1f3ed4784d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-35 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-41 |
| filingDate | 2018-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97f1b5990ad7ece4f6162409d8fce06f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71fbf12eaf137a42721e7d57c472f72f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b35802b3f7786e104913ba5de5babe8 |
| publicationDate | 2020-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | PL-427494-A1 |
| titleOfInvention | A method for identifying ethylene glycol, propylene glycol and / or glycerin in aqueous solutions and / or a method for assessing their concentration in aqueous solutions. |
| abstract | The subject of the application is a method of identifying ethylene glycol, propylene glycol and / or glycerin and assessing their concentration in aqueous solutions, which includes the following steps. The first step is to prepare 50% water solutions of ethylene glycol, propylene glycol and / or glycerin and mix them thoroughly. In the second stage, spectrophotometric measurement is carried out using FTIR spectroscopy in the spectral range of 1200 - 800 cm-1 with a resolution of 4 cm-1 of the prepared aqueous solutions of ethylene glycol, propylene glycol and / or glycerin and the tested sample. In the third stage, we compare the wavelengths of the obtained peaks of the tested sample with the standard wavelengths of the peaks characteristic for ethylene glycol, propylene glycol and / or glycerin. In the fourth stage, the test sample is identified, and in the fifth stage, the refractometric measurement of prepared aqueous solutions of ethylene glycol, propylene glycol and / or glycerin, distilled water, and the tested sample at 20 ° C using monochromatic light. Then, in the sixth stage, we have to perform calculations - the refractive index value of distilled water is subtracted from the obtained value of the refractive index of the water solution of ethylene glycol, propylene glycol and / or glycerin, and each result obtained is multiplied by 100. In the seventh, a graph of the calculated values is drawn up and then a linear regression equation is determined for the set of results for the refractive indices of ethylene glycol, propylene glycol and / or glycerin, preferably using a spreadsheet, and read preferably to the second decimal place of the index. In the last, eighth step, the concentrations of the test sample are calculated according to the formula below. |
| priorityDate | 2018-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.