http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105136943-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-06 |
| filingDate | 2015-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105136943-B |
| titleOfInvention | Pretreatment method for qualitative analysis of printing and dyeing wastewater composition |
| abstract | The invention discloses a pretreatment method for qualitative analysis of a printing and dyeing wastewater composition. The pretreatment method includes the following steps: (1) taking a water sample of printing and dyeing wastewater, adding a stirring rod with an extraction coating layer being dimethyl siloxane, and carrying out adsorptive extraction; (2) adjusting the pH of the water sample after being treated in the step (1) to 8-9, then adding NaCl with the mass volume ratio of (15-30):100, and continuing adsorptive extraction; and (3) after adsorptive extraction in the step (2) is finished, taking out the stirring rod, carrying out thermal desorption, and then directly carrying out GC-MS detection. Salt-containing dyes of the water sample are derived into gasifiable organic matters under the alkaline condition, then 20% NaCl is added, the adsorbed composition of the stirring rod on pollutants in the sample is increased, and no organic solvent is used for extraction during pretreatment. Compared with a conventional pretreatment method, the pretreatment method disclosed by the invention reduces the harm to health of operators, is simple to operate, is fast, is environmentally friendly, and more comprehensively pretreats the printing and dyeing wastewater. |
| priorityDate | 2015-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.