JPS56111446A - Photometric analyzer of cell-length modulation system - Google Patents

Photometric analyzer of cell-length modulation system

Info

Publication number
JPS56111446A
JPS56111446A JP1402780A JP1402780A JPS56111446A JP S56111446 A JPS56111446 A JP S56111446A JP 1402780 A JP1402780 A JP 1402780A JP 1402780 A JP1402780 A JP 1402780A JP S56111446 A JPS56111446 A JP S56111446A
Authority
JP
Japan
Prior art keywords
cell
length
denoted
expressed
measured
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
JP1402780A
Other languages
Japanese (ja)
Inventor
Fumio Tanei
Toshiaki Ikeda
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.)
Horiba Ltd
Original Assignee
Horiba Ltd
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 Horiba Ltd filed Critical Horiba Ltd
Priority to JP1402780A priority Critical patent/JPS56111446A/en
Publication of JPS56111446A publication Critical patent/JPS56111446A/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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/0303—Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Optical Measuring Cells (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To improve a measurement precision with simple constitution by arranging a light source, sample cell and detector with prescribed optical situation and by providing a measured-wavelength transmissive material in the optical path of the sample cell so said material is free to enter and exit. CONSTITUTION:When the length between cell windows 3a and 3b of sample cell 3 is denoted as l1, moving measured-wavelength transmissive material 4 of diameter l2 into and out of optical path P can change the cell length to long and short length l1 and l1-l2 respectively, and consequently a measurement of wave-length modulation is feasible. Namely, if the transmitted light when transmissive material 4 exits is denoted asI1,I1is expressed by (1) and when asI2,I2is expressed by (2). The quotient between formulas 1 and 2, when denoted byI, is expressed by (3) andI or its logarithmically converted value is extracted as an output signal, so thatI0will not be included which is influenced by the deterioration of the light source and detector and the stain of the cell window. Therefore, concentration (C) can be measured with high precision through the simple constitution (in the formula,I0is incident light and (K) is the coefficient of light absorption).
JP1402780A 1980-02-07 1980-02-07 Photometric analyzer of cell-length modulation system Pending JPS56111446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1402780A JPS56111446A (en) 1980-02-07 1980-02-07 Photometric analyzer of cell-length modulation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1402780A JPS56111446A (en) 1980-02-07 1980-02-07 Photometric analyzer of cell-length modulation system

Publications (1)

Publication Number Publication Date
JPS56111446A true JPS56111446A (en) 1981-09-03

Family

ID=11849677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1402780A Pending JPS56111446A (en) 1980-02-07 1980-02-07 Photometric analyzer of cell-length modulation system

Country Status (1)

Country Link
JP (1) JPS56111446A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0688782A (en) * 1992-09-07 1994-03-29 Kurabo Ind Ltd Method and device for measuring concentration
CN101852727A (en) * 2010-05-18 2010-10-06 浙江大学 Optical detection method for continuously monitoring liquid concentration

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0688782A (en) * 1992-09-07 1994-03-29 Kurabo Ind Ltd Method and device for measuring concentration
CN101852727A (en) * 2010-05-18 2010-10-06 浙江大学 Optical detection method for continuously monitoring liquid concentration

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