FR2155407A5 - Atomic absorption probe - is graphite tube with profiled walls for axial resistance variability - Google Patents

Atomic absorption probe - is graphite tube with profiled walls for axial resistance variability

Info

Publication number
FR2155407A5
FR2155407A5 FR7234284A FR7234284A FR2155407A5 FR 2155407 A5 FR2155407 A5 FR 2155407A5 FR 7234284 A FR7234284 A FR 7234284A FR 7234284 A FR7234284 A FR 7234284A FR 2155407 A5 FR2155407 A5 FR 2155407A5
Authority
FR
France
Prior art keywords
atomic absorption
graphite tube
tube
axial resistance
absorption probe
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.)
Expired
Application number
FR7234284A
Other languages
French (fr)
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.)
PE Manufacturing GmbH
Original Assignee
Bodenseewerk Perkin Elmer and Co GmbH
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 Bodenseewerk Perkin Elmer and Co GmbH filed Critical Bodenseewerk Perkin Elmer and Co GmbH
Application granted granted Critical
Publication of FR2155407A5 publication Critical patent/FR2155407A5/en
Expired 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
    • G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
    • G01N21/74—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using flameless atomising, e.g. graphite furnaces

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Environmental & Geological Engineering (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

The tube is used for atomic absorption spectrometry and is heated by a current between electrodes fitted to its ground ends to avoid the use of a flame. To compensate for the localized cooling effects of the gas to be analyzed and protective gas fed in at ports in the sidewalls and so to prevent erroneous measurements of atomic absorption, the temp of the tube is linearized by making the resistance per unit length lower in the centre than at the ends. The increases towards the ends may be stepped, linear or follow smooth curves and these represent decreases in wall thickness.
FR7234284A 1971-09-30 1972-09-22 Atomic absorption probe - is graphite tube with profiled walls for axial resistance variability Expired FR2155407A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712148777 DE2148777B2 (en) 1971-09-30 1971-09-30 GRAPHITE TUBE FOR ATOMIC ABSORPTION MEASUREMENTS

Publications (1)

Publication Number Publication Date
FR2155407A5 true FR2155407A5 (en) 1973-05-18

Family

ID=5821018

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7234284A Expired FR2155407A5 (en) 1971-09-30 1972-09-22 Atomic absorption probe - is graphite tube with profiled walls for axial resistance variability

Country Status (2)

Country Link
DE (1) DE2148777B2 (en)
FR (1) FR2155407A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202628A (en) * 1976-03-29 1980-05-13 Hitachi, Ltd. Flameless atomizer
EP0442009A1 (en) * 1990-02-15 1991-08-21 Ringsdorff-Werke GmbH Tubular graphite furnace with a sample carrier with positive location means for atomic absorbtion spectroscopy

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2558948C2 (en) * 1975-12-29 1984-06-28 Bodenseewerk Perkin-Elmer & Co GmbH, 7770 Überlingen Graphite tube for flameless atomic absorption spectroscopy
GB2102589B (en) * 1981-07-28 1984-12-12 Varian Techtron Pty Ltd Tubular furnace of spectroscopic apparatus
DD221279A1 (en) * 1983-12-30 1985-04-17 Adw Ddr Inst Optik ATOMIZATOR TUBE FOR FLAMELESS ATOMIC ABSORPTION SPECTROMETRY
DE4243766C2 (en) * 1992-12-23 1996-10-31 Zeiss Carl Jena Gmbh Arrangement for electrothermal atomization, especially for atomic emission spectroscopy
DE102017119631A1 (en) 2017-08-28 2019-02-28 Analytik Jena Ag Arrangement for electrothermal atomization and atomic absorption spectrometer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202628A (en) * 1976-03-29 1980-05-13 Hitachi, Ltd. Flameless atomizer
EP0442009A1 (en) * 1990-02-15 1991-08-21 Ringsdorff-Werke GmbH Tubular graphite furnace with a sample carrier with positive location means for atomic absorbtion spectroscopy

Also Published As

Publication number Publication date
DE2148777A1 (en) 1973-04-05
DE2148777B2 (en) 1977-11-03

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Legal Events

Date Code Title Description
ST Notification of lapse