http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2758197-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_02bc3c257d07d29d83c115df446cf94e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-59 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N1-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-59 |
| filingDate | 2020-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d5fef607363c1a041fe3a1b0a56d3ad5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8546f352a6939591ba6e5aebf4b6202b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_24fc2efad87f68166a3c69286faf0d66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cbf3d240ab4adba5b877a3176930b398 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0fb4eea8e910417d857aadd767589d41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f643c1b8b2d279aac9d23934f72489b |
| publicationDate | 2021-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2758197-C1 |
| titleOfInvention | Method for determining mass concentration of 1,1-dimethylhydrazine degradation products in plant samples |
| abstract | FIELD: analytical chemistry.SUBSTANCE: invention relates to analytical chemistry; it can be used to control the mass concentration of 1,1-dimethylhydrazine and its degradation products in plant samples. A method for determining the mass concentration of 1,1-dimethylhydrazine and its degradation products in plant samples includes isolation of 1,1-dimethylhydrazine and its degradation products from a plant sample and determination of their concentrations in plant samples, while isolation of 1,1-dimethylhydrazine and its degradation products is carried out by flushing from the surface of plant leaves with an area of 0.5 m2using 50-200 cm3of distilled water, the resulting aqueous solution is clarified by adding 1 cm3of 1% KOH solution and 1% Zn2SO4solution, the solution is filtered through a paper filter with a pore diameter of 1.0-2.5 nm, after purification, reactions of the formation of colored complexes are carried out: to determine the concentration of 1,1-dimethylhydrazine, an alcoholic solution of p-nitrobenzaldehyde is added, a yellow complex is formed in an alkaline medium, a solution of 1,2-naphthoquinone-4-sulfonic acid is added to determine the mass concentration of dimethylamine, sodium salt forms an orange-brown complex, a Griss reagent is used to determine the content of nitrite ions, a mixed reagent of ferrotic salt and caustic sodium is used to determine the content of nitrate ions; acetylacetone is used in the determination of formaldehyde; an alcohol solution of bindon is used in the determination of tetramethyltetrazene, the optical density is measured using a spectrophotometer relatively to a comparison solution that does not contain the ingredient being determined, the concentration of the substance is set according to a pre-built calibration graph.EFFECT: reducing the sample preparation time and reducing errors of determinations.1 cl, 1 dwg, 1 tbl |
| priorityDate | 2020-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.