JPS5642129A - Fluorescence spectrophotometer - Google Patents

Fluorescence spectrophotometer

Info

Publication number
JPS5642129A
JPS5642129A JP11739279A JP11739279A JPS5642129A JP S5642129 A JPS5642129 A JP S5642129A JP 11739279 A JP11739279 A JP 11739279A JP 11739279 A JP11739279 A JP 11739279A JP S5642129 A JPS5642129 A JP S5642129A
Authority
JP
Japan
Prior art keywords
pulse width
larger
current value
quantitative analysis
flash lamp
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
JP11739279A
Other languages
Japanese (ja)
Inventor
Tatsumi Hiramoto
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.)
Ushio Denki KK
Ushio Inc
Original Assignee
Ushio Denki KK
Ushio Inc
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 Ushio Denki KK, Ushio Inc filed Critical Ushio Denki KK
Priority to JP11739279A priority Critical patent/JPS5642129A/en
Publication of JPS5642129A publication Critical patent/JPS5642129A/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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/069—Supply of sources
    • G01N2201/0696—Pulsed

Landscapes

  • Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Physics & Mathematics (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)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

PURPOSE:To lower the lower limit of the quantitative detection of the fluorescence spectrophotometer by a method wherein a flash lamp is used as a light source for pojecting the exciting light onto the sample, and the discharge current is controlled so that the peak current value and the pulse width may be larger than predetermined values. CONSTITUTION:When the flash lamp comprising xenon gas filled in a bulb having an inside diameter D of 8mm. and an arc length L of 40mm. is operated with a peak current value of 800A/cm<2> and a pulse width of 0.8m sec, the total luminous flux instantaneously becomes 6X10<6> lumen. If this flash light is used for the quantitative analysis of quinine sulfate in 0.1N sulfuric acid, the quantitative analysis is effective for extremely minute amounts down to about 0.01ppb. Although the flash lamp is inferior to short-arc discharge lamps in beam-condensing efficiency, it is superior to the short-arc discharge lamps in analyzing precision. In addition, when the peak current value is set to be larger than 300A/cm<2> and the pulse width to be larger than 30mu sec, the inconvenience of the fluctuation of the beam-condensing efficiency is avoided and the light-emitting efficiency can be enhanced to a sufficiently high value. Accordingly, the lower limit of the quantitative analysis can be lowered.
JP11739279A 1979-09-14 1979-09-14 Fluorescence spectrophotometer Pending JPS5642129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11739279A JPS5642129A (en) 1979-09-14 1979-09-14 Fluorescence spectrophotometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11739279A JPS5642129A (en) 1979-09-14 1979-09-14 Fluorescence spectrophotometer

Publications (1)

Publication Number Publication Date
JPS5642129A true JPS5642129A (en) 1981-04-20

Family

ID=14710511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11739279A Pending JPS5642129A (en) 1979-09-14 1979-09-14 Fluorescence spectrophotometer

Country Status (1)

Country Link
JP (1) JPS5642129A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59213122A (en) * 1983-05-18 1984-12-03 ニチコン株式会社 Method of producing capacitor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5057297A (en) * 1973-09-10 1975-05-19
JPS51106489A (en) * 1975-01-21 1976-09-21 Perkin Elmer Ltd

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5057297A (en) * 1973-09-10 1975-05-19
JPS51106489A (en) * 1975-01-21 1976-09-21 Perkin Elmer Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59213122A (en) * 1983-05-18 1984-12-03 ニチコン株式会社 Method of producing capacitor

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