Patent ID: 11860107
Assignee: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A method of detecting a concentration of a sample, the method comprising:
generating, by a plasma generation unit, plasma in a space between a pair of electrodes facing each other, the plasma generation unit being connected to a power supply unit;
terminating oscillation from the pair of electrodes of the plasma generation unit;
driving a signal detection unit after a preset period of time, after the oscillation from the pair of electrodes is terminated;
sensing, by the signal detection unit, light emitted from the sample, according to a wavelength band; and
calculating, by a controller, a concentration of a heavy metal in the sample, from a signal sensed by the signal detection unit, and
in the driving the signal detection unit, the controller is configured to control the driving start point to enable the plurality of signal detection units are respectively driven in different delay times, and
in the sensing by the signal detection unit, the controller is configured to equally control each period of time for which one or more sensors included in the plurality of signal detection units measure light.