http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109298087-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2030-067 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-02 |
| filingDate | 2018-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109298087-B |
| titleOfInvention | Gas chromatography-tandem mass spectrometry-based quantitative analysis method for glyphosate residues in tobacco leaves |
| abstract | The invention discloses a method for quantitatively analyzing glyphosate residues in tobacco leaves based on gas chromatography-tandem mass spectrometry, which comprises the steps of weighing a tobacco leaf sample into a centrifuge tube with a cover, transferring high-purity water, carrying out ultrasonic-assisted extraction, centrifuging to obtain supernatant, centrifuging to concentrate the supernatant to remove a solvent, sequentially adding pyridine and a derivatization reagent MSTFA, carrying out water bath derivatization for 30min, and standing for 2h at normal temperature after derivatization to obtain a sample to be detected; preparing a glyphosate mixed standard solution, and obtaining a calibration curve equation and a linear correlation coefficient through gas chromatography-tandem mass spectrometry; and (3) carrying out gas chromatography-tandem mass spectrometry on the sample to be detected to obtain the peak area of the chromatographic mass spectrum of the glyphosate in the sample to be detected, and inputting the peak area into a calibration curve equation to calculate the corresponding substance concentration. The recovery rate of glyphosate analysis in tobacco leaves is 95.1-103.5%, the lower limit of detection is 4 mg/kg, the lower limit of quantification is 10 mg/kg, the repeatability in days is 3.53%, and the repeatability in days is 5.16%. |
| priorityDate | 2018-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.