Title:
WATER QUALITY ANALYSIS DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/007639
Kind Code:
A1
Abstract:
Provided is a water quality analysis device that is for measuring the concentration of a measurement-target substance in sample water, and that comprises: a turbidity meter that measures the turbidity of the sample water by measuring the intensity of scattering light or transmission light from the measurement-target substance; a fluorometer that measures the fluorescence intensity of the measurement-target substance; a fluorescence intensity correction unit that corrects the fluorescence intensity of the measurement-target substance on the basis of the turbidity of the sample water; and a concentration calculation unit that sets a concentration calibration coefficient for converting the fluorescence intensity of the measurement-target substance into the concentration of the measurement-target substance on the basis of the result of measuring the fluorescence intensity of a fluorescence intensity calibration aqueous solution including a fluorescence intensity calibration substance that has a known concentration and that has a fluorescence intensity characteristic having a sensitivity wavelength range that overlaps that of the measurement-target substance.
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Inventors:
SHRESTHA SOMI (JP)
KOIZUMI KAZUHIRO (JP)
KOIZUMI KAZUHIRO (JP)
Application Number:
PCT/JP2021/027987
Publication Date:
February 02, 2023
Filing Date:
July 28, 2021
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD (JP)
International Classes:
G01N21/49; G01N21/53; G01N21/59; G01N21/64
Domestic Patent References:
| WO2020235198A1 | 2020-11-26 | |||
| WO2006095654A1 | 2006-09-14 |
Foreign References:
| JP2001083094A | 2001-03-30 | |||
| JP2018146539A | 2018-09-20 |
Attorney, Agent or Firm:
RYUKA IP LAW FIRM (JP)
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