Plasmaspektroskopieanalyseverfahren

Details

Veröffentlichungs-Nr.

EP3425374

Aktenzeichen

EP18180928

Anmeldetag

29. Juni 2018

Veröffentlichung

2. Dezember 2020

Erteilung

2. Dezember 2020

Rechtsraum

EP

IPC

G01N21/67G01N21/69G01J3/443G01J3/28

Abstract

A control metal species that is different from an analyte metal species is added to a sample (60) so as to have a known concentration. The resulting mixture is introduced to a measurement container (10), and an electric current is applied across a pair of electrodes (20, 30) in the measurement container (10) such that the analyte metal species and the control metal species in the sample (60) are concentrated in the vicinity of one of the electrodes (20, 30). An electric current is then applied across the pair of electrodes (20, 30) to generate plasma, and emitted light from the analyte metal species and the control metal species is detected. An analysis emission amount that is a net emission amount at an analysis wavelength that is a wavelength corresponding to the analyte metal species is corrected using a control emission amount that is a net emission amount at a control wavelength that is a wavelength corresponding to the control metal species. The corrected value is compared to a calibration curve obtained by advance measurements of known concentrations of the analyte metal species in order to quantify the analyte metal species in the sample (60).

Anmelder

Firma

ARKRAY, Inc.

Land

🇯🇵 Japan

Fachgebiete