http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-219289-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c2e66bf3565193fc7c191c8d35230946 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-78 |
| filingDate | 1983-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bdabffdc55cdd106773a5d73745bb772 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05ed772567087cb9d41e978f944bb941 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2f3eff2e7cc120b48172088dea78462f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3332870ebe5933f5ad163d7073ffa4da |
| publicationDate | 1985-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-219289-A1 |
| titleOfInvention | PROCESS FOR THE COLORIMETRIC DETERMINATION OF PHENOLES |
| abstract | The aim of the process is to quantitatively analyze phenols in water containing ammonium ions, effluents and solutions. The ammonium ion-induced disturbance of the known phenol determination method using p-nitraniline is eliminated by alkalizing the phenol-containing analyte sample with alkali hydroxide prior to combining with the aqueous diazonium salt solution, treating it with an inert gas and adding an amount of mineral acid equivalent to the amount of alkali hydroxide, depending on the Phenol concentration, the whole or an adequate portion of the sample pretreated in this way is made up to a volume equal to 50% to 85% of the total volume defined with distilled water. Alkali hydroxide is used in a molar excess of at least 10%, based on the amount of ammonia and / or its salts, calculated as ammonia. The inert gas treatment is carried out at a flow rate of 30 to 70 l / h over a period of 20 to 30 minutes. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4343263-A1 |
| priorityDate | 1983-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.