Patent ID: 11965864
Assignee: PEKING UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 3:
4. The quantitative source apportionment method based on nontarget HRMS data of pollution source and pollution receptor as claimed in claim 1, wherein step 3 comprises:
for a LC-HRMS, during performing peak extraction and peak alignment, setting a primary mass spectrometry (MS) permissible mass deviation and a secondary mass spectrometry (MS2) permissible mass deviation, and extracting peaks of each sample within a range of permissible mass deviations for each MS and MS2 to merge into one peak; and during performing peak elimination, setting a minimum extraction threshold and performing blank deduction, eliminating peaks with signal intensity smaller than the minimum extraction threshold and peaks existed in a blank sample.