JPS5596428A - Measuring light absorption coefficient of multi- wavelength and multi-wavelength photometer - Google Patents

Measuring light absorption coefficient of multi- wavelength and multi-wavelength photometer

Info

Publication number
JPS5596428A
JPS5596428A JP341879A JP341879A JPS5596428A JP S5596428 A JPS5596428 A JP S5596428A JP 341879 A JP341879 A JP 341879A JP 341879 A JP341879 A JP 341879A JP S5596428 A JPS5596428 A JP S5596428A
Authority
JP
Japan
Prior art keywords
signal
representative
absorption coefficient
wavelength
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP341879A
Other languages
Japanese (ja)
Inventor
Masahiro Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OOTAKE SEISAKUSHO KK
OTAKE SEISAKUSHO YUUGEN
Original Assignee
OOTAKE SEISAKUSHO KK
OTAKE SEISAKUSHO YUUGEN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by OOTAKE SEISAKUSHO KK, OTAKE SEISAKUSHO YUUGEN filed Critical OOTAKE SEISAKUSHO KK
Priority to JP341879A priority Critical patent/JPS5596428A/en
Publication of JPS5596428A publication Critical patent/JPS5596428A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths

Abstract

PURPOSE:To simplify the construction of a multi-wavelength photometer, by employing a structure including a plurality of wavelength selectors adapted to select different wavelengths and cyclically entering into a light passage to obtain monochromatic light having different main wavelengths, and then measure variations to occur with the lapse of time in the light absorption coefficient of multi-wavelengths, whereby a zero-aligning operation can be omitted. CONSTITUTION:A plurality of wavelength selectors 2 provided on a rotary plate 4 is put in a light passage L1 cyclically as the plate 4 is turned, to obtain monochromatic light having different main wavelengths. The monochromatic light thus obtained is passed through a flow cell 5, in which a sample liquid flows, to enter a first light receiving element 6, from which a signal S1 representative of a measurement value is output. A sample holder comparator 8 is adapted to temporarily memorize the signal S1 when it receives a synchronizing signal S2, and to output a signal S3 representative of difference between the signals S1, S2. A light absorption coefficient converter 12 is adapted to receive simultaneously in parallel a signal S4 representative of amplification difference and a signal S6 representative of an amplification reference value, operate fluctuations of light absorption coefficient in proportion to variations with the lapse of time in the sample solution, and output a signal S7 representative of the fluctuations mentioned above of light absorption coefficient, which is recorded in a recorder 13. This permits omitting a zero-aligning operation and simplifying the construction of a multi-wavelength photometer.
JP341879A 1979-01-18 1979-01-18 Measuring light absorption coefficient of multi- wavelength and multi-wavelength photometer Pending JPS5596428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP341879A JPS5596428A (en) 1979-01-18 1979-01-18 Measuring light absorption coefficient of multi- wavelength and multi-wavelength photometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP341879A JPS5596428A (en) 1979-01-18 1979-01-18 Measuring light absorption coefficient of multi- wavelength and multi-wavelength photometer

Publications (1)

Publication Number Publication Date
JPS5596428A true JPS5596428A (en) 1980-07-22

Family

ID=11556826

Family Applications (1)

Application Number Title Priority Date Filing Date
JP341879A Pending JPS5596428A (en) 1979-01-18 1979-01-18 Measuring light absorption coefficient of multi- wavelength and multi-wavelength photometer

Country Status (1)

Country Link
JP (1) JPS5596428A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006322720A (en) * 2005-05-17 2006-11-30 Ushio Inc Absorptiometer with microchip

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5194989A (en) * 1974-07-25 1976-08-20
GB1501883A (en) * 1973-05-08 1978-02-22 Nat Res Dev Devices for use in monitoring chemical reactions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1501883A (en) * 1973-05-08 1978-02-22 Nat Res Dev Devices for use in monitoring chemical reactions
JPS5194989A (en) * 1974-07-25 1976-08-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006322720A (en) * 2005-05-17 2006-11-30 Ushio Inc Absorptiometer with microchip

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