Patent ID: 11946912
Assignee: ENTECH INSTRUMENTS INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A method comprising:
introducing, via a plurality of valves, a first flow of sample from a sample extraction device contained in a thermal desorber to a SVOC focuser, through the SVOC focuser towards a VOC focuser;
while introducing the first flow:
retaining, with the SVOC focuser, first compounds; and
retaining, via the VOC focuser, second compounds;

after the SVOC focuser retains the first compounds and the VOC focuser retains second compounds:
introducing, via the plurality of valves, a second flow of the sample from the VOC focuser and the SVOC focuser to an analytical column, wherein the second flow transfers the first compounds and second compounds to the analytical column;

after the first and second compounds traverse the analytical column:
conducting a chemical analysis, via an analyzer fluidly coupled to the analytical column, of the first and second compounds.